Diagram sections — 34 (110 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY CONTROL MODULES COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ELECTRONIC SUSPENSION ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS MEMORY SYSTEMS NAVIGATION PASSIVE RESTRAINTS POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCK STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION TRUNK, TAILGATE, FUEL DOOR WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING Automatic A/C Wiring Diagram (1 of 3) for Cadillac STS V 2009 List of elements for Automatic A/C Wiring Diagram (1 of 3) for Cadillac STS V 2009: 54 (on dash right of steering column) inside air temperature (iat) sensor 5v ref A/c refrigerant low temp sens sig Air quality hc sens sig Air quality nox sens sig Air temp dr ctrl Ambient air temp sens sig Ambient light sens sig Auxiliary air temp dr ctrl Auxiliary air temp dr position sig Auxiliary air temperature actuator (left center of dash, on lower left side of hvac module) Auxiliary mode actuator (inside center console, on right rear side) Auxiliary mode dr position sig Batt positive volt Blower mtr spd ctrl Blwr fuse 40a Ccp fuse 10a Ccp/ rly coils fuse 10a Computer data lines system Drv air temp dr position sig Drv sunload sens sig Frt blwr relay G201 (in passenger compt, behind right kick panel) Gnd Hot at all times Hot w/ run crnk relay energized Hvac control module (center of dash, below radio) Ign 3 vlot Inside air temp sens assembly ctrl Inside air temp sens sig Interior lights system J210 J211 (in dash harness, 28 cm from x214) Led backlight dimming ctrl Low ref Low spd gmlan serial data Medium 2 blower mtr ctrl Medium 3 blower mtr ctrl Medium blower mtr ctrl Mode dr ctrl Nca Pass air temp dr position sig Pass sunload sens sig Pnk Rear mode dr ctrl a Rear mode mtr low ref Recirculation actuator (on hvac module, left of blower motor) Recirculation door ctrl Recirculation door position sig Right air temp dr ctrl a Run/crank ign 1 volt Tan Tan/red Underhood fuse block (right front side of engine compt) Automatic A/C Wiring Diagram (2 of 3) for Cadillac STS V 2009 List of elements for Automatic A/C Wiring Diagram (2 of 3) for Cadillac STS V 2009: 28 (center of dash, in defroster grille) sunload sensor (in hvac motor assembly harness) j222 (in hvac motor assembly harness) j223 (under front fascia, near center of grille) ambient air temperature sensor (under front fascia, near front grille center) (if equipped) air quality sensor Air filter recirculating) Auxiliary hvac control module (w/ rear heated seat) Blower motor (under dash, behind glove box) Blower motor control module (behind right side of instrument panel) Blower mtr fan ctrl Blower mtr resistor assembly sply volt Blower mtr spd ctrl Blower mtr sply volt Evaporator temperature sensor (inside hvac case, at evaporator core) G104 (on right front frame rail, near bumper bracket) G201 (in passenger compt, behind right kick panel) Gnd Hot w/ run crnk relay energized Htd wash/ aqs fuse 10a J202 (in instrument panel harness, 50.5 cm from left front speaker) J212 Left air temperature actuator (left center of dash, on left side of hvac module) Pnk Right air temperature actuator (right center of dash, on right side of hvac module) Run/crank ign 1 volt Tan/ red Tan/red Underhood fuse block (right front side of engine compt) Automatic A/C Wiring Diagram (3 of 3) for Cadillac STS V 2009 List of elements for Automatic A/C Wiring Diagram (3 of 3) for Cadillac STS V 2009: 45 (on right front frame rail, near bumper bracket) g104 (or 2751) (or 476) 3.6l 3.6l & 4.6l w/o trailer provisions 4.4l & 4.6l 4.4l & 4.6l w/ trailer provisions 4.4l 3.6l 4.6l 5v reference 3 87a A/c clutch fuse 10a A/c cmprsr A/c compressor clutch A/c compressor clutch relay A/c refrig press sens A/c refrigerant pressure sensor (near left front strut tower, on a/c refrigerant line) Clutch relay ctrl x2 Computer data lines system Ect sensor signal Engine control module (ecm) (3.6l: front of engine, on right valve cover) (except 3.6l: on left front frame rail, below left headlamp assembly) Engine coolant temperature (ect) sensor (3.6l: in center of left cylinder head) (4.4l: rear of right cylinder head) (4.6l: in rear side of right cylinder head) Engine cooling fan Engine cooling fan resistor Fan 1 fuse 30a Fan 2 fuse 30a G100 (on rear side of right cylinder head) G104 (on right front frame rail, near bumper bracket) Hi fan spd relay Hi spd fan rly ctrl Hot at all times Hot w/ pwr/ trn relay energized Left engine cooling fan (behind radiator) Lo fan spd relay Low ref Low reference Low spd fan rly ctrl Mode actuator (on top left side of hvac module) Post 02 snsr fuse 15a Right engine cooling fan (behind radiator) S/p fan relay Serial data bus + Serial data bus - Tan Underhood fuse block (right front side of engine compt) Compressor Wiring Diagram for Cadillac STS V 2009 List of elements for Compressor Wiring Diagram for Cadillac STS V 2009: 21 (or 2751) 3.6l 5v ref 3 A/c cltch fuse 10a A/c cmprsr cltch relay A/c compressor clutch A/c refrigerant pressure sensor (near left front strut tower, on a/c refrigerant line) Computer data lines system Data bus+ Data bus- Engine control module (ecm) (3.6l: front of engine, on right valve cover) (except 3.6l: on left front frame rail, below left headlamp assembly) Except 3.6l G100 (on rear side of right cylinder head) Hot at all times Hot w/ pwr/trn relay energized Low ref Post 02 snsr fuse 15a Rly ctrl Sens sig Tan Underhood fuse block (right front side of engine compt)
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram, with VSC (1 of 2) for Cadillac STS V 2009 List of elements for Anti-lock Brakes Wiring Diagram, with VSC (1 of 2) for Cadillac STS V 2009: 59 (left side of engine compt) auxiliary brake pump booster (not used) (on right front frame rail, near right front strut tower) g110 1-17 1-32 21-56 34-46 48-50 54-69 Abs fuse 25a Abs mtr fuse 50a Batt positive volt Brake pressure modulator valve (bpmv) Brk vac pump fuse 15a (3.6l) Brk vac pump relay Can bus high serial data Can bus low serial data Computer data lines system Electronic brake control module (ebcm) (right front corner of engine compt) Electronic suspension control (esc) module (below right "c" pillar) Engine control module (ecm) (front of engine, on right valve cover) G110 (on right front frame rail, near right front strut tower) G201 (in passenger compt, behind right kick panel) G402 (in rear compt, to rear of left rear shock tower) Gnd Hi spd gmlan serial data (+) Hi spd gmlan serial data (-) Hot at all times Hot w/ pwr/trn relay energized Ign 1 Instrument panel module (ipm) Interior lights system J311 Jx404 (behind right side of rear seat back) Lf wheel spd sens low ref Lf wheel spd sens sig Lo spd gmlan serial data Lr wheel spd sens low ref Lr wheel spd sens sig Nca Pnk Rf wheel spd sens low ref Rf wheel spd sens sig Rr wheel spd sens low ref Rr wheel spd sens sig Serial data bus (+) Serial data bus (-) Serial data wake up Serial data wakeup Steering actr hi effort ctrl Steering actr lo effort ctrl Tan Traction control ind Traction control switch (tcs) Traction ctrl sw sig 2 x3 Underhood fuse block (right front side of engine compt) Vacuum pump rly ctrl Variable effort steering actuator (in left rear engine compt, on steering rack) Vehicle stability control module (left rear wheel hub assembly) Anti-lock Brakes Wiring Diagram, with VSC (2 of 2) for Cadillac STS V 2009 List of elements for Anti-lock Brakes Wiring Diagram, with VSC (2 of 2) for Cadillac STS V 2009: 38 (near left front strut tower, at bottom of inside fender well) Abs ind Brake fluid level switch (in master cylinder reservoir) Brake ind Can bus high Can bus low Computer data lines system Driver information center (dic) display G101 G200 (in passenger compt, behind left kick panel) G307 (in passenger compt, to left of driver seat, on left frame rail) Gnd Hot at all times Hot w/ run relay energized Ign Ign 1 volt Instrument panel cluster (ipc) J/c Jx204 (under passenger side of dash, near g201) Left front wheel speed sensor (wss) (behind left front brake rotor) Left rear fuse block (under left side of rear seat) Left rear wheel speed sensor (wss) (behind left rear brake rotor) Logic Pnk Power steering control module (pscm) (left side of dash, above park brake pedal) Right front wheel speed sensor (wss) (behind right front brake rotor) Right rear wheel speed sensor (wss) (behind right rear brake rotor) Rim/rpa/isrvm/clm fuse 10a S10 S22 S23 S24 Serial data Steering wheel speed/position sensor (in passenger compartment, at base of steering column) Tan Traction off ind Tv/vics/ afs/scm fuse 10a Yaw & lateral accelerometer sensor Anti-lock Brakes Wiring Diagram, without VSC (1 of 2) for Cadillac STS V 2009 List of elements for Anti-lock Brakes Wiring Diagram, without VSC (1 of 2) for Cadillac STS V 2009: 49 (left side of engine compt) auxiliary brake booster pump (on right front frame rail, near right front strut tower) g110 (right rear side of engine block, near starter) g112 Abs fuse 25a Abs ind Abs mtr fuse 50a Act hi effort ctrl Battery positive volt Brake fluid level switch (in master cylinder reservoir) Brake ind Brake pressure modulator valve (bpmv) Brk vac pump fuse 15a (3.6l) Brk vac pump relay Can bus hi serial data Can bus lo serial data Computer data lines system Driver information center (dic) display Electronic brake control module (ebcm) (right front corner of engine compt) Engine control module (ecm) (front of engine, on right valve cover) G101 (near left front strut tower, at behind of inside fender well) G200 (in passenger compt, behind left kick panel) Ground Hot at all times Hot w/ pwr/trn relay energized Ign Instrument panel cluster (ipc) Lf wheel spd sens low ref Logic Low effort ctrl Motor control Nca Serial data Serial data (+) (1) Serial data (-) (1) Serial data bus (+) Serial data bus (-) Serial data wake up Steering wheel speed/ position sensor (in passenger compt, at base of steering column) Tan Underhood fuse block (right front side of engine compt) Vacuum pump rly ctrl Variable effort steering actuator (on left side of power steering gear) Wheel spd sens lo ref lr Wheel spd sens lo ref rr Wheel spd sens low ref rf Wheel spd sens sig lf Wheel spd sens sig rf Wheel spd sens signal lr Wheel spd sens signal rr Anti-lock Brakes Wiring Diagram, without VSC (2 of 2) for Cadillac STS V 2009 List of elements for Anti-lock Brakes Wiring Diagram, without VSC (2 of 2) for Cadillac STS V 2009: 19 Brake pedal position sensor (attached to top of brake pedal assembly) Computer data lines system G201 (in passenger compt, behind right kick panel) G307 (in passenger compt, to left of driver seat, on left frame rail) Instrument panel module (ipm) Interior lights system J311 Left front wheel speed sensor (wss) (behind left front brake rotor) Left rear wheel speed sensor (wss) (behind left rear brake rotor) Park brake switch Park brake switch (at base of brake pedal) Right front wheel speed sensor (wss) (behind right front brake rotor) Right rear wheel speed sensor (wss) (behind right rear brake rotor) Serial data + Serial data - Tan Traction control switch (tcs) Traction ctrl sw sig 2 Yaw rate & lateral acceleration sensor (under the front passenger seat)
ANTI-THEFT Anti-theft Wiring Diagram for Cadillac STS V 2009 List of elements for Anti-theft Wiring Diagram for Cadillac STS V 2009: 61 3.6l Battery positive volt Computer data lines system Door open sw sig Driver door control module (inside driver door) Driver door latch (in middle rear of driver door) Engine control module (ecm) (3.6l: front of engine, on right valve cover) (except 3.6l: on left front frame rail, below left headlamp assembly) Engine controls system Except 3.6l Exterior lights system Fd1 Fd2 Fuel pump ctrl G104 (on right front frame rail, near bumper bracket) G200 (in passenger compt, behind left kick panel) G201 (in passenger compt, behind right kick panel) G402 (in rear compt, to rear of left rear shock tower) Gmlan serial data Ground High spd gmlan+ High spd gmlan- Hood ajar switch (on right front strut tower) Hood closed sw sig Hood open sw sig Horn ctrl Horns system Hot at all times Hot in run or crank Ign 1 volt Instrument panel cluster (ipc) Instrument panel module (ipm) (right side of dash, behind glove box) Interior lights system J/c J500 J600 J700 J800 Left rear door control module (lrdm) (inside left rear door) Left rear door latch (in middle rear of passenger door) Logic Low spd gmlan Low spd gmlan data Park lamp ctrl Passenger door control module (inside passenger's door) Passenger door latch (in middle rear of left rear door) Pnk Rear compartment lid latch (center rear of rear compt lid) Rear integration module (rim) (in left side of rear compt, under rear shelf) Remote control door lock receiver (rcdlr) (under rear speaker shelf) Right rear door control module (rrdm) (inside right rear door) Right rear door latch (in middle rear of right rear door) Right rear fuse block (under right side of rear seat) Rim fuse 10a Rim/rpa/ isrvm/clm fuse 10a s8 S11 Security ind Starter enable Starting/ charging system Tan Trunk ajar sig Trunk diode
BODY CONTROL MODULES Instrument Panel Module Wiring Diagram for Cadillac STS V 2009 List of elements for Instrument Panel Module Wiring Diagram for Cadillac STS V 2009: 88 5v ref Acc voltage Anti-lock brakes system Backlight lamp ctrl Batt positive volt Computer data lines system Cruise control system Cruise ctrl set/coast/res/acc sw sig Current sens low ref Current sens sig Current sens sply voltage Ecm/tcm serial data wake up Exterior lights system Flash to pass sw sig Flash to pass sw sply voltage Fog lamp rly ctrl Frt fog lamp sw sig G101 (near left front strut tower, at bottom of inside fender well) G201 (in passenger compartment, behind right kick panel) Hazard sw sig Hdlamp automatic high beam dim status Headlamp automatic high beam dim enable Headlamp hi beam rly ctrl Headlamp low beam rly ctrl Headlamp on with wipers signal Headlamp sw on sig Headlamp washer rly ctrl Headlights system High spd gmlan serial data (+) High spd gmlan serial data (-) High spd gmlan serial data wake up Horn rly ctrl Horns system Hot at all times Hot w/ park lamp relay energized I/p lamp dimmer sw sig I/p lamp fuse sply volt 1 I/p mdl/ aldl fuse 10a Ign mode sw acc led sig Ign mode sw led sply voltage Ign mode sw mode ctrl Ign mode sw off led sig Ign mode sw start led sig Ign mode switch mode voltage Instrument cluster system Instrument panel module (ipm) (right side of dash, behind glove box) Interior lamp sw on sig Interior lights system J210 Led backlight dimming ctrl Lf turn sig sw sig Lic/dim fuse 7.5a Low spd gmlan serial data Mirrors system Navigation & sound systems Park brake sw sig Park lamp rly ctrl Park lamp sw on sig Pnk Power distribution system Rear fog lamp sw sig Remote radio ctrl head acc sply volt Rf turn sig sw sig Run ign 3 voltage Run/crank ign 1 voltage Shft select sw park sply volt Shift interlock system Shift select sw prk sig Sig gnd Starting/charging system Steering column radio ctrl sig Steering column tilt & telescope dn sw sig Steering column tilt & telescope fwd sw sig Steering column tilt & telescope rwd sw sig Steering column tilt & telescope up sw sig Stop lamp sw sig Tan Tap up/dn enable sig Traction ctrl sw sig Transmissions system Trunk release rly ctrl Trunk, tailgate, fuel doors system Twilight sentinel delay sig Underhood fuse block (right front side of engine compt) V/ check fuse 10a Windshield washer fluid lvl sens sig Windshield wiper sw sig 2 Wiper/washer system Rear Integration Module Wiring Diagram for Cadillac STS V 2009 List of elements for Rear Integration Module Wiring Diagram for Cadillac STS V 2009: 51 Anti-theft system Batt positive voltage Computer data lines system Courtesy lamp sply voltage Courtesy lmp rly coil ctrl Cruise control switch signal Cruise control system Defogger system Exterior lights system G402 (in rear compartment, to rear of left rear shock tower) Gnd Headlights system Hood closed sw sig Hood open sw sig Hot at all times Hot w/ run/crnk relay energized Interior lights system Interior lmp ctrl J/c Lf turn sig lmp sply voltage Low spd gmlan serial data Lr stop/turn lmp sply voltage Lr turn signal lmp sply voltage Lt trn/ ldw fuse 10a Navigation system Pnk Power tops system Rap rly coil ctrl Rear defog rly ctrl Rear fog lamp relay control Rear integration module (rim) (in left side of rear compartment, under rear shelf) Rear parking assist chime sig Rev rly coil feed Rf turn sig lmp sply voltage Right rear fuse block (under right side of rear seat) Rim fuse 10a Rim/rpa/ isrvm/clm fuse 10a Rr stop/turn lmp sply voltage Rr turn sig lmp sply voltage Rt trn/ sbza fuse 10a Run/crank ign 1 voltage S11 Sig gnd Standing lmp rly feed Steering wheel ctrl sply volt Tan Trunk ajar sw sig Trunk release rly output coil Trunk, tailgate, fuel doors system Windshield wiper park mtr ctrl Wiper/washer system
COMPUTER DATA LINES Computer Data Lines Wiring Diagram (1 of 4) for Cadillac STS V 2009 List of elements for Computer Data Lines Wiring Diagram (1 of 4) for Cadillac STS V 2009: 38 (in engine harness, 19 cm from ho2s bank 1 sensor 1 connector) j113 (in passenger compt, behind left kick panel) g200 (under left side of dash, near steering column) data link connector (dlc) 3.6l 4.4l & 4.6l Can bus high serial data Can bus low serial data Distance sensing cruise control (dscc) module (behind front fascia, near hood latch) Ecm/ tcm serial data wake up Ecm/tcm serial data wake up Engine control module (ecm) (3.6l: front of engine, on right valve cover) (except 3.6l: on left front frame rail, below left headlamp assembly) G200 (in passenger compt, behind left kick panel) Headlamp leveling module (left side of headlamp assembly) High speed gmlan data wake up High speed gmlan serial data (+) High speed gmlan serial data (-) High speed gmlan serial data + High speed gmlan serial data - High speed gmlan serial data bus + High speed gmlan serial data bus - High speed gmlan serial data wake up Hot at all times Instrument panel module (ipm) (right side of dash, behind glove box) Ip/ mdl/ aldl fuse 10a J116 (in forward lamp harness, 31 cm from right headlamp leveling actuator connector) Jx201 (on dash harness, under dashboard, near firewall grommet) Jx405 (behind left side of rear seat back) Low speed gmlan serial data Power steering control module (left side of dash, above park brake pedal) Tan Underhood fuse block (right front side of engine compt) W/ active brake control W/ auto adaptive cruise control W/ auto headlamps leveling W/ magnetic ride control W/o active brake control W/o auto adaptive cruise control W/o auto headlamps leveling Computer Data Lines Wiring Diagram (2 of 4) for Cadillac STS V 2009 List of elements for Computer Data Lines Wiring Diagram (2 of 4) for Cadillac STS V 2009: 25 Automatic transmission Can bus high serial data Can bus low serial data Control solenoid valve assembly Electronic brake control module (ebcm) (right front corner of engine compt) Hi spd gmlan serial data bus + High speed gmlan data wake up High speed gmlan serial data (+) High speed gmlan serial data (-) High speed gmlan serial data bus + High speed gmlan serial data bus - High speed gmlan serial data wakeup Jx100 (on forward lamp harness, left of center, behind front bumper) Low speed gmlan serial data Tan Vehicle communication interface module (vcim) (w/ onstar) (in rear compt, near right rear strut tower) W/ active brake control W/ auto adaptive cruise control W/ magnetic ride control W/ onstar W/o active brake control W/o active brake control & auto adaptive cruise control W/o auto adaptive cruise control W/o magnetic ride control W/o onstar Computer Data Lines Wiring Diagram (3 of 4) for Cadillac STS V 2009 List of elements for Computer Data Lines Wiring Diagram (3 of 4) for Cadillac STS V 2009: 20 (under passenger side Can bus high serial data Can bus low serial data Electronic suspension control (esc) module (w/ magnetic ride control) (below right "c" pillar) High speed gmlan serial data (+) High speed gmlan serial data (-) High speed gmlan serial data + High speed gmlan serial data - High speed gmlan serial data wake up Jx204 Jx404 (behind right side of rear seat back) Jx405 (behind left side of rear seat back) Of dash, near g201) Serial data can bus high Steering wheel speed/position sensor (w/ active brake control) Tan Vehicle stability control module (w/ active brake control) (left rear wheel hub assembly) W/ active brake control W/o active brake control Yaw rate & lateral acceleration sensor (w/ active brake control) (under the front passenger seat) Computer Data Lines Wiring Diagram (4 of 4) for Cadillac STS V 2009 List of elements for Computer Data Lines Wiring Diagram (4 of 4) for Cadillac STS V 2009: 26 Audio amplifier (left side of luggage compt) B5 low speed gmlan serial data x1 Digital radio receiver (on right side of package shelf) Driver door control module (ddm) (inside driver's door) Driver window switch Head up display (hud) Hvac control module (center of dash, below radio) If equipped Inflatable restraint sensing & diagnostic module (sdm) (under rear of center console) Infotainment system Instrument panel cluster (ipc) Jx201 (on dash harness, under dashboard, near firewall grommet) Jx300 (on left frame rail, near left side of passenger seat) Jx303 (in passenger compt, on right frame rail, near right side of passenger seat) L low speed gmlan serial data x1 Left rear door control module (inside left rear door) Low speed gmlan serial data Low speed gmlan serial data x1 Low speed gmlan serial data x3 Memory seat module (under driver seat) Passenger door control module (inside passenger's door) Radio Rear integration module (rim) (in left side of rear compt, under rear shelf) Remote control door lock receiver (rcdlr) (under rear speaker shelf) Right rear door control module (rrdm) (inside right rear door) Tv antenna module (left side of rear shelf)
COOLING FAN Cooling Fan Wiring Diagram for Cadillac STS V 2009 List of elements for Cooling Fan Wiring Diagram for Cadillac STS V 2009: 32 (on right front frame rail, near bumper bracket) g104 (or 476) 3.6l 3.6l & 4.6l w/o trailer provisions 4.4l & 4.6l 4.4l & 4.6l w/ trailer provisions 4.6l 4.4l 3.6l 87a Computer data lines system Ect sensor signal Engine control module (ecm) (3.6l: front of engine, on right valve cover) (except 3.6l: on left front frame rail, below left headlamp assembly) Engine coolant temperature (ect) sensor (3.6l: in center of left cylinder head) (4.4l: rear of right cylinder head) (4.6l: in rear side of right cylinder head) Engine cooling fan Engine cooling fan resistor Fan 1 fuse 30a Fan 2 fuse 30a G104 (on right front frame rail, near bumper bracket) Hi fan spd relay Hi spd fan rly ctrl Hot at all times Hot w/ pwr/ trn relay energized Left engine cooling fan (behind radiator) Lo fan spd relay Low reference Low spd fan rly ctrl Post 02 snsr fuse 15a Right engine cooling fan (behind radiator) S/p fan relay Serial data bus + Serial data bus - Tan Underhood fuse block (right front side of engine compt)
CRUISE CONTROL
3.6L VIN V 3.6L VIN V, Cruise Control Wiring Diagram for Cadillac STS V 2009 List of elements for 3.6L VIN V, Cruise Control Wiring Diagram for Cadillac STS V 2009: 60 (n engine harness, 387 cm from x102) (near left front strut tower, at bottom of inside fender well) g101 5 v ref 5 volt reference 5 volt reference 1 5 volt reference 2 Accelerator pedal position (app) sensor (attached to top of accelerator pedal) App sensor 1 signal App sensor 2 signal Automatic transmission Brake pedal position sensor (attached to top of brake pedal assembly) Ccp/rly coils fuse 10a Computer computer data lines data lines system system Computer data lines system Cruise control switch Cruise ind Cruise sw sig Display Distance sensing cruise control module (behind front fascia, near hood latch) Driver information center (dic) Ecm/tcm ign fuse 15a Engine control module (ecm) (front of engine, on right valve cover) Exterior lights system G104 (on right front frame rail, near bumper bracket) Gmlan serial data Gmlan serial data + Gmlan serial data - Gmlan serial wake up Gnd Ground Head up display (hud) (if equiped) Hot at all times Hot w/ run/crank relay energized Ignition Ignition 1 voltage Instrument panel cluster (ipc) Instrument panel module (ipm) (right side of dash, behind glove box) J147 J225 (in steering column harness) Lo ref Logic Low reference Pnk Power distribution system Sens sig Serial data bus + Serial data bus - Serial data gmlan Sound systems Tac motor control-1 Tac motor control-2 Tan Tcc/crs cntl Tcc/cruise control release sig Throttle body assembly (top front of engine) Tp sensor 1 signal Tp sensor 2 signal Transmission control module (tcm) Turn signal/multi-function switch Underhood fuse block (right front side of engine compt)
4.4L VIN D 4.4L VIN D, Cruise Control Wiring Diagram for Cadillac STS V 2009 List of elements for 4.4L VIN D, Cruise Control Wiring Diagram for Cadillac STS V 2009: 61 (4.6l: in engine harness, 24 cm from x102) (near left front strut tower, at bottom of inside fender well) g101 4.4l 4.6l 5 v ref 5 volt reference 5 volt reference 1 5 volt reference 2 Accelerator pedal position (app) sensor (attached to top of accelerator pedal) App sensor 1 signal App sensor 2 signal Automatic transmission Brake pedal position sensor (attached to top of brake pedal assembly) Ccp/rly coils fuse 10a Computer data lines system Cruise control switch Cruise ind Cruise sw sig Display Distance sensing cruise control module (behind front fascia, near hood latch) Driver information center (dic) Ecm/tcm ign fuse 15a Engine control module (ecm) (on left front frame rail, below left headlamp assembly) Exterior lights system G104 (on right front frame rail, near bumper bracket) Gmlan serial data Gmlan serial data + Gmlan serial data - Gmlan serial wake up Gnd Ground Head up display (hud) (if equiped) Hot at all times Hot w/ run/crank relay energized Ignition Ignition 1 voltage Instrument panel cluster (ipc) Instrument panel module (ipm) (right side of dash, behind glove box) J147 J225 (in steering column harness) Lo ref Logic Low reference Pnk Power distribution system Sens sig Serial data bus + Serial data bus - Serial data gmlan Sound systems Tac motor control-1 Tac motor control-2 Tan Tcc/crs cntl Tcc/cruise cntl rel sig Throttle body assembly (top front of engine) Tp sensor 1 signal Tp sensor 2 signal Transmission control module (tcm) Turn signal/multi-function switch Underhood fuse block (right front side of engine compt)
4.6L VIN A 4.6L VIN A, Cruise Control Wiring Diagram for Cadillac STS V 2009 List of elements for 4.6L VIN A, Cruise Control Wiring Diagram for Cadillac STS V 2009: 61 (4.6l: in engine harness, 24 cm from x102) (near left front strut tower, at bottom of inside fender well) g101 4.4l 4.6l 5 v ref 5 volt reference 5 volt reference 1 5 volt reference 2 Accelerator pedal position (app) sensor (attached to top of accelerator pedal) App sensor 1 signal App sensor 2 signal Automatic transmission Brake pedal position sensor (attached to top of brake pedal assembly) Ccp/rly coils fuse 10a Computer data lines system Cruise control switch Cruise ind Cruise sw sig Display Distance sensing cruise control module (behind front fascia, near hood latch) Driver information center (dic) Ecm/tcm ign fuse 15a Engine control module (ecm) (on left front frame rail, below left headlamp assembly) Exterior lights system G104 (on right front frame rail, near bumper bracket) Gmlan serial data Gmlan serial data + Gmlan serial data - Gmlan serial wake up Gnd Ground Head up display (hud) (if equiped) Hot at all times Hot w/ run/crank relay energized Ignition Ignition 1 voltage Instrument panel cluster (ipc) Instrument panel module (ipm) (right side of dash, behind glove box) J147 J225 (in steering column harness) Lo ref Logic Low reference Pnk Power distribution system Sens sig Serial data bus + Serial data bus - Serial data gmlan Sound systems Tac motor control-1 Tac motor control-2 Tan Tcc/crs cntl Tcc/cruise cntl rel sig Throttle body assembly (top front of engine) Tp sensor 1 signal Tp sensor 2 signal Transmission control module (tcm) Turn signal/multi-function switch Underhood fuse block (right front side of engine compt)
DEFOGGERS Defoggers Wiring Diagram for Cadillac STS V 2009 List of elements for Defoggers Wiring Diagram for Cadillac STS V 2009: 30 (right side of dash, behind glove box) instrument panel module (ipm) Computer data lines system Driver door control module (ddm) (inside driver's door) Driver outside rearview mirror Feed Front passenger door control module (fpdm) (inside passenger's door) Gmlan serial data Heated mirror element Hot at all times Hvac control module (center of dash, below radio) J300 Left rear fuse block (under left side of rear seat) Logic Low reference Nca Passenger outside rearview mirror R10 R25 Rear defog fuse 40a Rear defog relay Rear defogger indicator Rear defogger switch Rear integration module (rim) (in left side of rear compt, under rear shelf) Rear window defogger Relay control Right rear fuse block (under right side of rear seat) Rtn Run ign 3 volt Run relay Serial data
ELECTRONIC POWER STEERING Electronic Power Steering Wiring Diagram, with Active Brake for Cadillac STS V 2009 List of elements for Electronic Power Steering Wiring Diagram, with Active Brake for Cadillac STS V 2009: 31 (near left front strut tower, at bottom of inside fender well) g101 Actr frt active sig gnd Actr frt active sig mtr u Actr frt active sig mtr w Actr frt active sig u Actr frt active sig v Actr frt active sig w Afs fuse 30a Batt positive volt Can bus high serial data Can bus low serial data Computer data lines system Electronic brake control module (ebcm) (right front corner of engine compt) G200 (in passenger compt, behind left kick panel) Gnd Hot at all times Hot w/ run relay energized Ign Ign 3 fuse 10a J/c Left rear fuse block (under left side of rear seat) Pnk Power steering control module (pscm) (left side of dash, above park brake pedal) Serial data + Serial data - Serial data wakeup Steering angle sensor Tan Tan/ Underhood fuse block (right front side of engine compt) Upper intermediate steering shaft Electronic Power Steering Wiring Diagram, without Active Brake for Cadillac STS V 2009 List of elements for Electronic Power Steering Wiring Diagram, without Active Brake for Cadillac STS V 2009: 29 Abs mtr fuse 50a Anti-lock brakes system Batt Computer data lines system Driver information center (dic) display Ecm/tcm/ign fuse 15a Electronic brake control module (ebcm) (right front corner of engine compartment) G110 (on right front frame rail, near right front strut tower) G200 (in passenger compartment, behind left kick panel) Gmlan serial data Gnd Hi effort ctrl High serial data Hot at all times Hot w/ run crnk relay energized Ign 1 volt Ing 1 Instrument panel cluster (ipc) Jx201 (on dash harness, under dashboard, near firewall grommet) Lo effort ctrl Logic Low serial data Pnk Serial data + Serial data - Steering wheel speed/ position sensor (in passenger compartment, at base of steering column) Tan Underhood fuse block (right front side of engine compt) Variable effort steering actuator (in left rear engine compt, on steering rack)
ELECTRONIC SUSPENSION Electronic Suspension Wiring Diagram for Cadillac STS V 2009 List of elements for Electronic Suspension Wiring Diagram for Cadillac STS V 2009: 55 (behind right rear tire) automatic level control (alc) compressor (in rear compt, to rear of right rear shock tower) g401 Automatic level Batt Battery voltage Computer data lines system Data signal Driver information center (dic) display Ekm/i/p mdl fuse 10a Elc cmprsr fuse 30a Elc cmprsr relay Elc exh fuse 10a Elec relay ctrl Electronic suspension control (esc) module (below right "c" pillar) G401 (in rear compt, to rear of right rear shock tower) Gmlan ser data + Gmlan ser data - Ground High serial data Hot at all times Hot w/ run relay energized Instrument panel cluster (ipc) Ipc class 2 Left front shock absorber actuator (top of left front strut tower) Left front suspension position sensor (near left front strut) Left rear fuse block (under left side of rear seat) Left rear shock absorber actuator (top of left rear strut tower) Left rear suspension position sensor (near left rear strut) Lf damping ctrl Lf damping increase Lf position sens Lf sens vol ref Lo serial data Logic Lr damping ctrl Lr position sens Lr sens vol ref Mrtd mdl fuse 25a Nca R10 Rf damping ctrl Rf position sens Rf raid ctrl Rf sens vol ref Right front shock absorber actuator (top of right front strut tower) Right front suspension position sensor (near right front strut) Right rear shock absorber actuator (top of right rear strut tower) Right rear suspension position sensor (near right rear strut) Rr damping decrease Rr damping increase Rr position sens Rr sens vol ref Sensor low ref Tan Underhood fuse block (right front side of engine compt)
ENGINE PERFORMANCE
3.6L VIN V 3.6L VIN V, Engine Performance Wiring Diagram (1 of 5) for Cadillac STS V 2009 List of elements for 3.6L VIN V, Engine Performance Wiring Diagram (1 of 5) for Cadillac STS V 2009: 53 (1, 3 & 5: top right side of engine) fuel injectors (18 cm from ignition coil 1 connector) (2, 4 & 6: top left side of engine) (36 cm from ignition coil module 2 connector) (near right front of engine block) g109 (rear of left cylinder head) high pressure fuel pump (right rear side of engine block, near starter) g112 5 volt ref 1 5 volt ref 2 5 volt ref 3 After boil coolant sply volt Anti-lock brakes system Camshaft phaser exhaust sol 1 Ckp sens 1 sig Cmp actr sol exhaust bank 2 Cmp actr sol intake bank 1 Cmp exhaust sens 1 Cmp exhaust sens 2 Cmp intake bank 1 sig Cmp sens intake bank 1 sig Cmp sens intake bank 2 sig Engine control module (ecm) (front of engine, on right valve cover) Evap cnstr purge sol ctrl Frp sens sig Fuel inj 2 ctrl Fuel inj 3 ctrl Fuel inj 5 ctrl Fuel inj 6 ctrl Generator field duty cycle sig Generator turn on sig Ic 1 ctrl Ic 3 ctrl Ic 5 ctrl Ignition coil 1 (on top front of left valve cover) Ignition coil 2 (on top front of right valve cover) Ignition coil 3 (on top center of left valve cover) Ignition coil 4 (on top center of right valve cover) Ignition coil 5 (on top rear of left valve cover) Ignition coil 6 (on top rear of right valve cover) J127 J131 Low ref Low ref hi press fuel pump actr sol ctrl Nca Plug spark Sound systems Spark plug Starting/charging system Tac mtr ctrl 1 Tac mtr ctrl 2 Tan Vacuum pump rly ctrl Vehicle spd sig 3.6L VIN V, Engine Performance Wiring Diagram (2 of 5) for Cadillac STS V 2009 List of elements for 3.6L VIN V, Engine Performance Wiring Diagram (2 of 5) for Cadillac STS V 2009: 36 (bank 1 sens 1) ho2s lo sig (bank 1 sens 1) ho2s low ref (bank 2 sens 1) (bank 2 sens 1) ho2s ref volt (bank 2 sens 1) low ref (in engine harness, 27 cm from evap canister purge solenoid valve connector) j101 (on left exhaust pipe, before catalytic converter) heated oxygen sensor (ho2s) bank 2 sensor 1 (on right exhaust pipe, before catalytic converter) heated oxygen sensor (ho2s) bank 1 sensor 1 (on right side of engine, near valve cover) evaporative emissions (evap) canister purge solenoid valve (top left front of engine) camshaft position (cmp) actuator solenoid valve exhaust bank 2 (top left front of engine) camshaft position (cmp) actuator solenoid valve intake bank 2 (top right front of engine) camshaft position (cmp) actuator solenoid valve exhaust bank 1 (top right front of engine) camshaft position (cmp) actuator solenoid valve intake bank 1 Ect sens sig Engine control module (ecm) (front of engine, on right valve cover) Engine coolant temperature (ect) sensor (in center of left cylinder head) Engine oil pressure (eop) sensor (on left side of engine, attached to oil filter adapter housing) Fuel inj 1 ctrl Fuel inj 4 ctrl Ho2s hi sig Ho2s htr lo ctrl Ic 2 ctrl Ic 4 ctrl Ic 6 ctrl Ign 1 volt Knock sens 1 sig Knock sens 2 sig Knock sensor (ks) bank 1 (on right side of engine) Knock sensor (ks) bank 2 (on left side of engine) Low ref Nca Oil press sens sig Tan Tp sens 1 sig Tp sens 2 sig X1 (bank 1 sens 1) ho2s htr lo ctrl 3.6L VIN V, Engine Performance Wiring Diagram (3 of 5) for Cadillac STS V 2009 List of elements for 3.6L VIN V, Engine Performance Wiring Diagram (3 of 5) for Cadillac STS V 2009: 40 (in engine compt, on fuel rail) (left front side of engine block) auxiliary coolant pump 5 volt ref A/c cmprsr cltch relay Brake vac pump fuse 15a Brk vac pump relay Camshaft position (cmp) sensor exhaust bank 1 (top right front of engine) Camshaft position (cmp) sensor exhaust bank 2 (top left front of engine) Camshaft position (cmp) sensor intake bank 1 (top front of engine) Camshaft position (cmp) sensor intake bank 2 (top front of engine) Ckp sig Cmp sig Crankshaft position sensor (lower right rear of engine) Ecm 1 fuse 15a Ecm/tcm batt fuse 10a Even coils fuse 15a Fan s/p relay Fuel cool fuse 10a Fuel cool relay Fuel rail pressure (frp) sensor G100 (on rear side of right cylinder head) Hi fan spd relay Hot at all times J124 J160 Lo fan spd relay Low ref Odd coils fuse 15a Pnk Post o2 snsr fuse 15a Pre o2 snsr fuse 15a Pwr/trn relay Sens 1 exhaust Sens 2 exhaust Sens rtn Tan Throttle body assembly (top front of engine) Tps1 Tps2 Underhood fuse block (right front side of engine compt) 3.6L VIN V, Engine Performance Wiring Diagram (4 of 5) for Cadillac STS V 2009 List of elements for 3.6L VIN V, Engine Performance Wiring Diagram (4 of 5) for Cadillac STS V 2009: 20 (in fuel tank jumper harness, 28 cm from fuel tank pressure sensor connector) Cnstr vent fuse 10a Evaporative emission (evap) canister vent solenoid valve (under rear of vehicle, above rear differential) Fuel pump Fuel pump & sender assembly (in fuel tank) Fuel pump fuse 20a Fuel pump relay Fuel tank pressure (ftp) sensor (attached to evap canister vent solenoid, at rear of fuel tank) G401 (in rear compt, to rear of right rear shock tower) Hot at all times J/c J406 Left fuel tank sensor R11 R12 R13 R15 Right rear fuse block (under right side of rear seat) Secondary fuel level sensor (top left of fuel tank) Tan 3.6L VIN V, Engine Performance Wiring Diagram (5 of 5) for Cadillac STS V 2009 List of elements for 3.6L VIN V, Engine Performance Wiring Diagram (5 of 5) for Cadillac STS V 2009: 59 (in air intake duct) mass air flow (maf)/intake air temperature (iat) sensor (in engine harness, 52 cm from ho2s bank 1 sensor 2 connector) (on left exhaust pipe, after catalytic converter) heated oxygen sensor (ho2s) bank 2 sensor 2 (on rear side of right cylinder head) g100 (on right exhaust pipe, after catalytic converter) heated oxygen sensor (ho2s) bank 1 sensor 2 5 volt ref 1 5 volt ref 2 5 volt ref 3 A/c compressor clutch rly ctrl hi spd cooling fan rly ctrl A/c refrigerant pressure sensor Accelerator pedal position (app) sensor (attached to top of accelerator pedal) Air conditioning system App sens 1 sig App sens 2 sig Batt positive volt Computer data lines system Cooling fans system Ecm/tcm ign fuse 15a Ecm/tcm serial data wake up hi spd gmlan serial data bus (+) Engine control module (ecm) (front of engine, on right valve cover) Evap canister vent sol ctrl ho2s htr lo ctrl (bank 2 sens 2) mil ctrl Exterior lights system Fuel lvl sens sig Fuel pump rly ctrl Fuel tank press sens sig G100 (on rear side of right cylinder head) Gmlan serial data bus (-) Gnd Ho2s hi sig (bank 1 sens 2) a/c refrig press sens sig Ho2s hi sig (bank 2 sens 2) Ho2s htr lo sig (bank 2 sens 2) Hot w/ run crnk relay energized Iat sens sig Ign Ign 1 volt Ign 1 volt ho2s htr lo ctrl (bank 1 sens 2) Ign lk cyl ctrl actr sig Instrument panel cluster (ipc) J104 J109 Lo spd cooling fan rly ctrl Lo spd gmlan serial data Logic Low ref Low ref ho2s htr lo sig (bank 1 sens 2) Maf sens sig Main rly ctrl Malfunction ind Nca Pnk Run/ crank ign 1 volt Sens sig Starter rly coil ctrl Starting/charging system Stop lamp sw sig Tan Tan c Transmissions system Underhood fuse block (right front side of engine compt)
4.4L VIN D 4.4L VIN D, Engine Performance Wiring Diagram (1 of 6) for Cadillac STS V 2009 List of elements for 4.4L VIN D, Engine Performance Wiring Diagram (1 of 6) for Cadillac STS V 2009: 57 (in fuel tank jumper harness, 28 cm from fuel tank pressure sensor connector) j406 (in fuel tank) fuel pump & sender assembly (top left of fuel tank) secondary fuel level sensor 5 volt ref 5 volt ref 1 A/c refrigerant press sig A/c refrigerant pressure sensor (near left front strut tower, on a/c refrigerant line) Baro sens low ref Baro sensor sig Barometric pressure (baro) sensor (top right side engine) Cnstr vent fuse 10a Computer data lines system Coolant pump rly ctrl Cooling fans system Ect sensor sig Engine control module (ecm) (on left front frame rail, below left headlamp assembly) Engine coolant temperature (ect) sensor (rear of right cylinder head) Evap cnstr purge sol ctrl Fuel pump Fuel pump fuse 20a Fuel pump relay G100 (on rear side of right cylinder head) G401 (in rear compt, to rear of right rear shock tower) Generator field duty cycle sig Generator turn on sig Ground Hi spd gmlan bus + Hi spd gmlan serial data bus - Ho2s hi sig (bank 2 sens 1) Ho2s hi sig (bank 2 sens 2) Ho2s lo sig (bank 2 sens 1) Ho2s lo sig (bank 2 sens 2) Hot at all times Htr lo ctrl (bank 2 sens 1) Iat 2 low ref Iat 2 sig Intake air temperature (iat) sensor 2 (top right front of engine, under intake air tube) J/c J152 Left fuel tank sensor Lo spd cooling fan rly ctrl ho2s htr lo ctrl (bank 2 sens 2) Low ref Manifold absolute pressure (map) sensor (top right side of engine, near baro sensor) Map sensor sig Oil level sw sig Park/neutral sig Pnk R11 R12 R13 R15 Right rear fuse block (under right side of rear seat) Starting/ charging system Starting/charging system Tan Transmissions system Vacuum bypass vlv ctrl 4.4L VIN D, Engine Performance Wiring Diagram (2 of 6) for Cadillac STS V 2009 List of elements for 4.4L VIN D, Engine Performance Wiring Diagram (2 of 6) for Cadillac STS V 2009: 27 (at bottom of radiator, between fans) charge air cooler (cac) coolant pump (attached to evap canister vent solenoid, at rear of fuel tank) fuel tank pressure (ftp) sensor (in engine harness, 19 cm from ho2s bank 1 sensor 1 connector) j113 (on left exhaust pipe, before catalytic converter) heated oxygen sensor (ho2s) bank 2 sensor 1 (on right exhaust pipe, before catalytic converter) heated oxygen sensor (ho2s) bank 1 sensor 1 Accelerator pedal position (app) sensor (attached to top of accelerator pedal) Automatic transmission Computer data lines system Data Evaporative emissions (evap) canister purge solenoid valve (on rear of engine, near throttle body) Evaporative emissions (evap) canister vent solenoid valve (under rear of vehicle, above rear differential) G100 (on rear side of right cylinder head) Heated oxygen sensor (ho2s) bank 1 sensor 2 (on right exhaust pipe, after catalytic converter) Heated oxygen sensor (ho2s) bank 2 sensor 2 (on left exhaust pipe, after catalytic converter) Hot at all times Ign Inclr pump fuse 10a Inclr pump relay Instrument panel cluster (ipc) Instrument panel module (ipm) (right side of dash, behind glove box) J101 Left rear fuse block (under left side of rear seat) Logic Malfunction indicator lamp Nca Pnk Tan 4.4L VIN D, Engine Performance Wiring Diagram (3 of 6) for Cadillac STS V 2009 List of elements for 4.4L VIN D, Engine Performance Wiring Diagram (3 of 6) for Cadillac STS V 2009: 49 (in front center of engine,at number 2 injector) supercharger bypass valve solenoid (in left side of rear compt, under rear shelf) rear object sensor control module 5 volt ref 1 A/c cmprsr cltch relay A/c compressor Air conditioning system App sensor 1 sig App sensor 2 sig Battery positive volt Clutch rly ctrl Cooling fans system Data wake up ecm/tcm serial Ecm 1 fuse 15a Ecm/tcm batt fuse 10a Ecm/tcm ign fuse 15a Engine control module (ecm) (on left front frame rail, below left headlamp assembly) Evap canister vent sol ctrl Exterior lights system Fan s/p relay Fuel pump relay ctrl Fuel tank press sens sig Hi fan spd relay Hi spd cooling fan rly ctrl Hot at all times Hot w/ run crnk relay energized Inlet air press sens sig Inside rearview mirror (isrvm) J104 Lo fan spd relay Low ref Mil ctrl Pnk Post o2 snsr fuse 15a Powertrain rly ctrl Pre o2 snsr fuse 15a Pwr/trn relay Radio Run/crank ign 1 volt Secondary fuel lvl sens sig Starter rly coil ctrl Starting/ charging system Stop lamp sw sig Tan To even coils fuse (diagram 4 of 6) Transmissions system Underhood fuse block (right front side of engine compt) Vehicle speed sig W/ infotainment system 012, 014 & 015 W/ intelligent high beam control 4.4L VIN D, Engine Performance Wiring Diagram (4 of 6) for Cadillac STS V 2009 List of elements for 4.4L VIN D, Engine Performance Wiring Diagram (4 of 6) for Cadillac STS V 2009: 25 (in ignition coil harness) j137 (in ignition coil harness, 30 cm from ignition coil module 1 connector) (in ignition coil harness, 30 cm from ignition coil module 7 connector) j146 (in ignition coil harness, 31 cm from ignition coil module 8 connector) j135 (in ignition coil harness, 36 cm from ignition module 2 connector) j131 (on rear side of right cylinder head) g107 (on top right side of engine) supercharger air inlet pressure sensor Even coils fuse 15a From a pwr/trn relay (diagram 3 of 6) Fuel injectors (1, 3, 5 & 7: top right side of engine) (2, 4, 6 & 8: top left side of engine) G107 (on rear side of right cylinder head) Ignition coils (1, 3, 5 & 7: top left side of engine) (2, 4, 6 & 8: top right side of engine) J127 J133 J142 J144 Nca Odd coils fuse 15a Pnk Pnk a Pnk b Spark plug Tan Tan c Underhood fuse block (right front side of engine compt) 4.4L VIN D, Engine Performance Wiring Diagram (5 of 6) for Cadillac STS V 2009 List of elements for 4.4L VIN D, Engine Performance Wiring Diagram (5 of 6) for Cadillac STS V 2009: 14 5 volt ref Camshaft position (cmp) actuator solenoid valve exhaust bank 1 (top right front of engine) Camshaft position (cmp) actuator solenoid valve intake bank 1 (top right front of engine) Camshaft position (cmp) actuator solenoid valve intake bank 2 (top left front of engine) Camshaft position (cmp) sensor exhaust bank 1 (top right front of engine) Camshaft position (cmp) sensor exhaust bank 2 (top left front of engine) Camshaft position (cmp) sensor intake bank 1 (top right front of engine) Camshaft position (cmp) sensor intake bank 2 (top left front of engine) Ckp sens sig Cmp sig Crankshaft position (ckp) sensor (top center of engine) Low ref Pnk Tan 4.4L VIN D, Engine Performance Wiring Diagram (6 of 6) for Cadillac STS V 2009 List of elements for 4.4L VIN D, Engine Performance Wiring Diagram (6 of 6) for Cadillac STS V 2009: 65 5 volt ref 1 5 volt ref 2 Camshaft position (cmp) actuator solenoid valve exhaust bank 2 (left front of engine) Ckp sensor sig Engine control module (ecm) (on left front frame rail, below left headlamp assembly) Engine oil level/ temperature sensor (bottom center of engine oil pan) Engine oil pressure (eop) sensor (on left side of engine) Exhaust bank 1 ctrl Exhaust bank 1 sig Exhaust bank 2 ctrl Exhaust bank 2 sig Fuel inj 1 ctrl Fuel inj 2 ctrl Fuel inj 3 ctrl Fuel inj 4 ctrl Fuel inj 5 ctrl Fuel inj 6 ctrl Fuel inj 7 ctrl Fuel inj 8 ctrl G100 (on rear side of right cylinder head) Gnd Ground Hi sig (bank 1 sens 1) Hi sig (bank 1 sens 2) Ho2s htr low ctrl Iat sensor sig Ic 1 ctrl Ic 2 ctrl Ic 3 ctrl Ic 4 ctrl Ic 5 ctrl Ic 6 ctrl Ic 7 ctrl Ic 8 ctrl Ign 1 volt Intake bank 1 sig Intake bank 2 sig J109 J152 Knock sensor (ks) 1 (on right side of engine, under intake manifold) Knock sensor (ks) bank 2 (on left side of engine, under intake manifold) Ks 1 sig Ks 2 sig Lo sig (bank 1 sens 1) Lo sig (bank 1 sens 2) Low ref Low ref inlet air press sens rtn Maf sensor sig Maf sig Mass air flow (maf)/intake air temperature (iat) sensor (in air intake duct) Nca Oil press sens sig Oil temp sens low ref Oil temp sens sig Pnk Sol intake bank 1 ctrl Sol intake bank 2 ctrl Tac mtr ctrl 1 Tac mtr ctrl 2 Tan Tan d Tan e Throttle body assembly (top front of engine) Tp sensor 1 sig Tp sensor 2 sig
4.6L VIN A 4.6L VIN A, Engine Performance Wiring Diagram (1 of 6) for Cadillac STS V 2009 List of elements for 4.6L VIN A, Engine Performance Wiring Diagram (1 of 6) for Cadillac STS V 2009: 48 (on left front frame rail, below left headlamp assembly) engine control module (ecm) 5 volt ref 1 A/c refrigerant press sens sig A/c refrigerant pressure sensor (near left front strut tower, on a/c refrigerant line) Cnstr vent fuse 10a Computer data lines system Cooling fans system Ect sensor sig Engine coolant temperature (ect) sensor (in rear side of right cylinder head) Evap canister purge sol ctrl Evaporative emissions (evap) canister purge solenoid valve (on rear of engine, near throttle body) Evaporative emissions (evap) canister vent solenoid (under rear of vehicle, above rear differential) Fuel pump fuse 20a Fuel pump relay G100 (on rear side of right cylinder head) G401 (in rear compt, to rear of right rear shock tower) Generator field duty cycle sig Generator turn on sig Ground Hi spd gmlan serial data bus + Hi spd gmlan serial data bus - Ho2s hi sig (bank 2 sens 1) Ho2s hi sig (bank 2 sens 2) Ho2s htr lo ctrl (bank 2 sens 1) Ho2s lo sig (bank 2 sens 1) Ho2s lo sig (bank 2 sens 2) Hot at all times Ign Instrument panel cluster (ipc) J/c J152 Lo spd cooling fan relay ctrl ho2s htr lo ctrl (bank 2 sens 2) Lo spd gmlan serial data Logic Low ref Malfunction ind Manifold absolute pressure (map) sensor (front center of engine, in back of throttle body) Map sensor sig Park/neutral sig R11 R12 R13 R15 Right rear fuse block (under right side of rear seat) Starting/ charging system Starting/charging system Tan Transmissions system 4.6L VIN A, Engine Performance Wiring Diagram (2 of 6) for Cadillac STS V 2009 List of elements for 4.6L VIN A, Engine Performance Wiring Diagram (2 of 6) for Cadillac STS V 2009: 16 (attached to evap canister vent solenoid, at rear of fuel tank) fuel tank pressure (ftp) sensor (in fuel tank jumper harness, 28 cm from fuel tank pressure sensor connector) j406 (on left exhaust pipe, after catalytic converter) heated oxygen sensor (ho2s) bank 2 sensor 2 (on left exhaust pipe, before catalytic converter) heated oxygen sensor (ho2s) bank 2 sensor 1 (on right exhaust pipe, after catalytic converter) heated oxygen sensor (ho2s) bank 1 sensor 2 (on right exhaust pipe, before catalytic converter) heated oxygen sensor (ho2s) bank 1 sensor 1 (top left of fuel tank) secondary fuel level sensor Accelerator pedal position (app) sensor (attached to top of accelerator pedal) Camshaft position (cmp) actuator solenoid valve exhaust bank 1 (right front of engine) Camshaft position (cmp) actuator solenoid valve exhaust bank 2 (left front of engine) Camshaft position (cmp) actuator solenoid vlave intake bank 1 (top right front of engine) Camshaft position (cmp) actuator solenoid vlave intake bank 2 (top left front of engine) J101 (in engine harness, 15 cm from fuel injector 5 connector) Knock sensor (ks) bank 2 (on left side of engine, under intake manifold) Nca Tan 4.6L VIN A, Engine Performance Wiring Diagram (3 of 6) for Cadillac STS V 2009 List of elements for 4.6L VIN A, Engine Performance Wiring Diagram (3 of 6) for Cadillac STS V 2009: 48 (in fuel tank) fuel pump & sender assembly (in rear compt, to rear of right rear shock tower) 5 volt ref 1 A/c cmprsr cltch relay A/c compressor ctrl Air conditioning system App sensor 1 sig App sensor 2 sig Battery positive volt Computer data lines system Cooling fans system Ecm 1 fuse 15a Ecm/ tcm batt fuse 10a Ecm/tcm ign fuse 15a Ecm/tcm serial data Engine control module (ecm) (on left front frame rail, below left headlamp assembly) Evap canister ctrl Exterior lights system Fan s/p relay Ftp sensor sig Fuel level sensor sig Fuel pump relay ctrl G401 Hi fan spd relay High speed relay ctrl Hot at all times Hot w/ run crnk relay energized J104 J109 Left fuel tank sensor Lo fan spd relay Low ref Mil ctrl Pnk Post o2 snsr fuse 15a Powertrain relay ctrl Pre o2 snsr fuse 15a Pwr/trn relay Run/crank ign 1 volt Secondary sensor sig Starter rly coil ctrl Starting/charging system Stop lamp switch sig Tan To even coils fuse (diagram 4 of 6) Transmissions system Underhood fuse block (right front side of engine compt) Vehicle speed sig 4.6L VIN A, Engine Performance Wiring Diagram (4 of 6) for Cadillac STS V 2009 List of elements for 4.6L VIN A, Engine Performance Wiring Diagram (4 of 6) for Cadillac STS V 2009: 30 (in engine poa harness, 18 cm from ignition coil 1 connector) (in ignition coil harness) j137 (in ignition coil harness, 30 cm from ignition coil module 1 connector) (in ignition coil harness, 30 cm from ignition coil module 7 connector) j146 (in ignition coil harness, 31 cm from ignition coil module 8 connector) j135 (in ignition coil harness, 36 cm from ignition coil module 2 connector) j131 (on rear side of right cylinder head) g107 B tan Even coils fuse 15a From a pwr/trn relay (diagram 3 of 6) Fuel injectors (1, 3, 5 & 7: top right side of engine) (2, 4, 6 & 8: top left side of engine) Ignition coil (2, 4, 6 & 8: top right side of engine) (1, 3, 5 & 7: top left side of engine) Inside rearview mirror J127 J133 J142 Nca Odd coils fuse 15a Plug spark Pnk Pnk a Pnk b Radio Rear object sensor control module (in left side of rear compt, under rear shelf) Spark plug Tan Tan c Underhood fuse block (right front side of engine compt) W/ infotainment system 012, 014 & 015 W/ intelligent high beam control 4.6L VIN A, Engine Performance Wiring Diagram (5 of 6) for Cadillac STS V 2009 List of elements for 4.6L VIN A, Engine Performance Wiring Diagram (5 of 6) for Cadillac STS V 2009: 12 5 volt ref A pnk B tan Camshaft position (cmp) sensor exhaust bank 1 (top right front of engine) Camshaft position (cmp) sensor exhaust bank 2 (top left front of engine) Camshaft position (cmp) sensor intake bank 1 (top right front of engine) Camshaft position (cmp) sensor intake bank 2 (top left front of engine) Cmp sig Engine oil pressure (eop) sensor (on left side of engine) Low ref Pnk Tan 4.6L VIN A, Engine Performance Wiring Diagram (6 of 6) for Cadillac STS V 2009 List of elements for 4.6L VIN A, Engine Performance Wiring Diagram (6 of 6) for Cadillac STS V 2009: 61 5 volt ref 1 5 volt ref 2 Ckp sens sig Ckp sensor sig Cmp actr sol exhaust bank 1 ctrl Cmp actr sol exhaust bank 2 ctrl Cmp actr sol intake bank 1 ctrl Cmp actr sol intake bank 2 ctrl Cmp sens exhaust bank 1 sig Cmp sens exhaust bank 2 sig Cmp sens intake bank 1 sig Cmp sens intake bank 2 sig Crankshaft position (ckp) sensor (top center of engine) Engine control module (ecm) (on left front frame rail, below left headlamp assembly) Fuel inj 1 ctrl Fuel inj 2 ctrl Fuel inj 3 ctrl Fuel inj 4 ctrl Fuel inj 5 ctrl Fuel inj 6 ctrl Fuel inj 7 ctrl Fuel inj 8 ctrl G100 (on rear side of right cylinder head) Gnd Ground Ho2s high sig (bank 1 sensor 1) Ho2s high sig (bank 1 sensor 2) Ho2s htr low ctrl (bank 1 sens 1) Ho2s htr low ctrl (bank 2 sens 1) Ho2s low sig (bank 1 sensor 1) Ho2s low sig (bank 1 sensor 2) Iat sensor sig Ic 1 ctrl Ic 2 ctrl Ic 3 ctrl Ic 4 ctrl Ic 5 ctrl Ic 6 ctrl Ic 7 ctrl Ic 8 ctrl Ign 1 volt J152 Knock sensor (ks) bank 1 (on right side of engine, under intake manifold) Knock sensor 1 sig Knock sensor 2 sig Low ref Maf sens sig Maf sensor sig Mass air flow (maf)/intake air temperature (iat) sensor (in air intake duct) Nca Oil press sens sig Pnk Tac motor ctrl 1 Tac motor ctrl 2 Tan Tan d Tan e Throttle body assembly (top front of engine) Tp sensor 1 sig Tp sensor 2 sig Volt ref
EXTERIOR LIGHTS Backup Lamps Wiring Diagram for Cadillac STS V 2009 List of elements for Backup Lamps Wiring Diagram for Cadillac STS V 2009: 32 A x2 Automatic transmission Automatic transmission internal mode switch (ims) Bck/up lamp fuse 10a Bck/up lamp relay Computer data lines system Control solenoid valve assembly G402 (in rear compt, to rear of left rear shock tower) Gnd Hot at all times J/c J401 Left backup lamp Left rear fuse block (under left side of rear seat) Lo spd gmlan ser data R36 R37 R38 R40 Range sw sig a Range sw sig b Rear integration module (rim) (in left side of rear compt, under rear shelf) Red Reverse rly ctrl Right backup lamp S24 S25 S28 Serial data + Serial data - Tan Transmission control module (tcm) Exterior Lamps Wiring Diagram (1 of 2) for Cadillac STS V 2009 List of elements for Exterior Lamps Wiring Diagram (1 of 2) for Cadillac STS V 2009: 65 (in passenger compt, behind left kick panel) g200 (in rear compt, to rear of left rear shock tower) g402 (near left front strut tower, at bottom of inside fender well) g101 Auto Back light lamp Batt positive voltage Brake pedal position sensor (attached to top of brake pedal assembly) Brake sensor sig Computer data lines system G104 (on right front frame rail, near bumper bracket) G201 (in passenger compt, behind right kick panel) Gmlan serial data Ground Ground distribution system Hazard sw sign Hazard switch Headlamps on sig Hot at all times I/p mdl/ aldl fuse 10a Instrument panel cluster (ipc) Instrument panel module (ipm) (right side of dash, behind glove box) Interior lights system J226 J311 J401 Jx201 (on dash harness, under dashboard, near firewall grommet) Left Left front repeater lamp Left front turn signal lamp Left license lamp Left turn signal ind Left turn signal voltage Left turn sw sig Lic dim fuse 7.5a Lo speed gmlan serial data Logic Low reference Low speed gmlan Lt trn/ ldw fuse 10a Master lightning ind Off Park head Park lamp relay Park lamp rly ctrl Park lamp sw on sig Power distribution system Rear integration module (rim) (in left side of rear compt, under rear shelf) Right Right front repeater lamp Right front turn signal lamp Right license lamp Right rear fuse block (under right side of rear seat) Right turn signal ind Right turn signal voltage Right turn sw sig Rim fuse 10a Signal Sply volt Stop lamp sw sign To underhood fuse block lt park fuse, (diagram 2 of 2) Turn signal/ multi-function switch Underhood fuse block (right front side of engine compt) V/ check fuse 10a W/ gps 1 & hid W/ hid Exterior Lamps Wiring Diagram (2 of 2) for Cadillac STS V 2009 List of elements for Exterior Lamps Wiring Diagram (2 of 2) for Cadillac STS V 2009: 42 (in body harness, 58 cm from right rear fuse block c1) j306 (in body harness, 72 cm from right rear fuse block c1) (w/ gps 1) j317 (right front side of engine compt) underhood fuse block (under right side of rear seat) right rear fuse block Center high mounted stop lamp (chmsl) Engine controls & transmissions systems From underhood a fuse block lic dim fuse (diagram 1 of 2) G104 (on right front frame rail, near bumper bracket) G401 (in rear compt, to rear of right rear shock tower) G402 (in rear compt, to rear of left rear shock tower) Ground Hot at all times J/c J108 J109 J401 J409 Left front marker lamp Left front park lamp Left headlamp Left rear marker lamp Left tail lamp Left tail lamp outage detection signal Logic Lt park fuse 10a R36 R37 R38 R40 Right front marker lamp Right front park lamp Right headlamp Right rear marker lamp Right tail lamp Right tail lamp outage detection signal Rt park fuse 10a S12 S13 S14 Stop lamp relay Stop lamps fuse 10a W/ gps 1 & hid
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 5) for Cadillac STS V 2009 List of elements for Ground Distribution Wiring Diagram (1 of 5) for Cadillac STS V 2009: 38 (4.4l & 4.6l) (3.6l) (4.4l) charge air cooler (cac) coolant pump (if equipped) headlamp washer fluid pump (w/ active brake control) power steering control module (pscm) 3.6l 4.6l & 4.4l A/c compressor clutch Automatic headlamp dimming relay Automatic transmission B c Battery Brake fluid level switch Control solenoid valve assembly Electronic brake control module (ebcm) Engine control module (ecm) G100 (on rear side of right cylinder head) G101 (near left front strut tower, at bottom of inside fender well) G105 (at back of underhood fuse block) G106 (on rear side of right cylinder head) G110 (on right front frame rail, near right front strut tower) G306 (under center console) G403 (on right side "c" pillar, near rear window) G404 (on left side "c" pillar, near rear window) If equipped Inflatable restraint passenger presence system (pps) module Inflatable restraint sensing & diagnostic module (sdm) Instrument panel module (ipm) Intelligent high beam control J152 (in engine harness, near the ecm module) Left heated washer nozzle Mass air flow (maf)/ intake air temperature (iat) sensor Nca Rear window defogger Rear window keyless entry antenna Right heated washer nozzle Windshield washer fluid level switch Windshield washer fluid pump Windshield wiper/ washer module Ground Distribution Wiring Diagram (2 of 5) for Cadillac STS V 2009 List of elements for Ground Distribution Wiring Diagram (2 of 5) for Cadillac STS V 2009: 46 (if equipped) (right front side of engine compartment) underhood fuse block (w/ auto recirculating) air quality sensor 4.4l 4.4l & 4.6l 4.6l & 3.6l Accy relay Distance sensing cruise control module (dscc) Engine cooling fan resistor Except 4.4l w/0 extra capacity cooling system & trailer provision G104 (on right front frame rail, near bumper bracket) G107 (4.6l & 4.4l) (on rear side of right cylinder head) Headlamp leveling module Hood ajar switch Horn assembly Ignition coil/ module 1 Ignition coil/ module 2 Ignition coil/ module 3 Ignition coil/ module 4 Ignition coil/ module 5 Ignition coil/ module 6 Ignition coil/ module 7 Ignition coil/ module 8 J108 J109 J133 (in ignition coil harness, 30 cm from ignition coil module 2 connector) J144 (in ignition coil harness, 39 cm from ignition coil module 1 connector) Left front fog lamp Left front marker lamp Left front park lamp Left front repeater lamp Left front turn signal lamp Left high beam headlamp Left low beam headlamp Right engine cooling fan Right front fog lamp Right front marker lamp Right front park lamp Right front repeater lamp Right front turn signal lamp Right high beam headlamp Right low beam headlamp Run crnk relay S/p fan relay W/ automatic adaptive cruise control W/ extra capacity cooling system & trailer provision Ground Distribution Wiring Diagram (3 of 5) for Cadillac STS V 2009 List of elements for Ground Distribution Wiring Diagram (3 of 5) for Cadillac STS V 2009: 45 (if equipped) head up display (hud) Data link connector (dlc) Driver door control module Driver door handle Driver door latch Driver door lock switch Driver window motor Driver window switch G109 (3.6l) (near right front of engine block) G112 (3.6l) (right rear side of engine block, near starter) G200 (in passenger compartment, behind left kick panel) Heated steering wheel Heated steering wheel control module I/p dimmer switch If equipped Ignition coil 1 Ignition coil 2 Ignition coil 3 Ignition coil 4 Ignition coil 5 Ignition coil 6 Inflatable restraint steering wheel module coil Instrument panel cluster (ipc) Interior rear compartment lid release switch J201 J202 (in instrument panel harness, 50.5 cm from left front speaker) J224 (in steering column harness) J228 (in steering column harness) J500 (in driver door harness, 32 cm from driver window motor connector) J501 (in driver door trim harness, 47 cm from driver door lock switch connector) J700 (in left rear door harness, 32 cm from x701) Jx201 (on dash harness, under dashboard, near firewall grommet) Left rear door control module Left rear door latch Left rear window motor Left rear window switch Left steering wheel control switch Nca Power steering control module (pscm) Right steering wheel control switch Steering wheel speed/ position sensor Turn signal/ multifunction switch W/ active brake control X276 X277 Ground Distribution Wiring Diagram (4 of 5) for Cadillac STS V 2009 List of elements for Ground Distribution Wiring Diagram (4 of 5) for Cadillac STS V 2009: 53 (rear seat heater) auxiliary hvac control module (w/ cigar lighter ashtray) rear cigar lighter (w/o cigar lighter ashtray) center console accessory power outlet (w/o cigarette lighter ashtray) i/p accessory power outlet (w/ cigarette lighter ashtray) front cigar lighter Automatic transmission shift lever Blower motor control module Center console compartment accessory power outlet Climate control seat module Driver back heated seat element Driver back ventilated seat blower motor Driver cushion heated seat element Driver cushion ventilated seat blower motor Driver seat adjuster switch Driver seat belt switch G201 (in passenger compartment, behind right kick panel) G307 (in passenger compt, to left of driver seat, on left frame rail) Hazard switch Hvac control module I/p compartment lamp switch Ignition mode switch Instrument panel module (ipm) J210 (in dash harness, 35 cm from x214) J600 (in passenger door harness, 32 cm from front passenger window motor connector) J601 (in passenger door trim harness, 42 cm from passenger door lock switch connector) Memory seat module (msm) Nca Passenger back heated seat element Passenger back ventilated seat blower motor Passenger cushion heated seat element Passenger cushion ventilated seat blower motor Passenger door control module Passenger door handle Passenger door latch Passenger door lock switch Passenger seat adjuster switch Passenger seat belt switch Passenger seat lumbar switch Passenger window motor Passenger window switch Right rear door control module Right rear door lock Right rear window motor Right rear window switch Seat adjuster switch connector) Traction control switch W/ active brake control W/ cigar lighter ashtray W/ front seat heater W/ power lumbar seats W/o active brake control W/o cigar lighter ashtray W/o front seat heater W/o power lumbar seats Yaw & lateral accelerometer sensor Ground Distribution Wiring Diagram (5 of 5) for Cadillac STS V 2009 List of elements for Ground Distribution Wiring Diagram (5 of 5) for Cadillac STS V 2009: 64 (if equipped) garage door opener (gdo) (if equipped) rear heated seat control module (if equipped) sunroof control module (if equipped) sunroof switch (if equipped) tire pressure module (if equipped) windshield outside moisture sensor (not used) (under left side of rear seat) left rear fuse block (under right side of rear seat) right rear fuse block (w/ active brake control) vehicle stability control module (w/ digital radio) digital radio receiver (w/ hid) left rear fog lamp (w/ hid) right rear fog lamp (w/ info- tainment system 015) traffic information receiver (w/ infotainment system 012, 014, 015) left front speaker (w/ infotainment system 012, 014, 015) right front speaker (w/ magnetic ride control) electronic suspension control (esc) module (w/ onstar) vehicle communication interface module (vcim) (wcv) windshield wiper inhibit relay 15-speaker system Audio amplifier Automatic level control (alc) compressor Center high mounted stop lamp (chmsl) Differential cooler pump Exterior rear compartment lid release switch Front overhead courtesy/ reading lamps Fuel pump & sender assembly G401 (in rear compt, to rear of right rear shock tower) G402 (in rear compt, to rear of left rear shock tower) Inflatable restraint i/p module indicator Inside rearview mirror (isrvm) J401 (in body harness, 15 cm from exterior rear compt release switch connector) J409 Left backup lamp Left license lamp Left rear marker lamp Left side object sensor Left sunshade Left tail lamp Nca R21 R25 Radio Rear compartment lid latch Rear integration module (rim) Rear object sensor control module Rear overhead courtesy/ reading lamps Rear subwoofer speaker Remote control door lock receiver (rcdlr) Right backup lamp Right license lamp Right rear marker lamp Right side object sensor Right sunshade Right tail lamp Run relay Run/crnk relay Vehicle direction alert alarm warning module W/ axle cooling system W/ lane departure warning sensor indicator W/ side obstacle detection sensor indicator W/ soft ride, sport suspension system & magnetic ride control W/ trailer provisions X402
HEADLIGHTS Headlamps Wiring Diagram (1 of 2) for Cadillac STS V 2009 List of elements for Headlamps Wiring Diagram (1 of 2) for Cadillac STS V 2009: 59 (in dash harness, 51 cm from left front dash speaker connector) j202 Air conditioning system Auto Automatic headlamp dimming relay (w/ intelligent high beam) (on underhood fuse block) C (not used) Computer data lines system Flash to pass sw sig Fog lamp rly ctrl Fog lamp sw sig Fog lamps ind Front fog lamp switch Ftp G101 (near left front strut tower, at bottom of inside fender well) G200 (in passenger compt, behind left kick panel) Gmlan Gmlan ser data Head Headlamp on sig Hi beam relay Hi beam sw sig High High beam ind High beam rly ctrl Hot at all times Hvac control module (center of dash, below radio) I/beam fuse 15a Inside rearview mirror (isrvm) Instrument panel cluster (ipc) Instrument panel module (ipm) (right side of dash, behind glove box) J114 Jx201 (on dash harness, under dashboard, near firewall grommet) Lo beam relay Logic Low Low beam rly ctrl Low ref Lt hi beam fuse 10a Lt lo beam fuse 20a Off Park Pwm sig Rly ctrl Rt hi beam fuse 10a Rt lo beam fuse 20a Sensor sig Sentinel display Ser data Serial data x1 Sply voltage Sunload sensor (center of dash, in defroster grille) Turn signal/ multi-function switch Underhood fuse block (right front side of engine compt) W/ high intensity discharge W/ intelligent high beam control W/o high intensity discharge W/o intelligent high beam control Wiper sw on signal Wiper sw signal 2 Wiper/washer system Headlamps Wiring Diagram (2 of 2) for Cadillac STS V 2009 List of elements for Headlamps Wiring Diagram (2 of 2) for Cadillac STS V 2009: 17 4.4l Except 4.4l Fog lamp fuse 15a Fog lamp relay G104 (on right front frame rail, near bumper bracket) Hot at all times Left front fog lamp Left front turn signal lamp Left headlamp Left headlamp ballast Left high beam headlamp Right front fog lamp Right front turn signal lamp Right headlamp Right headlamp ballast Right high beam headlamp Underhood fuse block (right front side of engine compt)
HORN Horn Wiring Diagram for Cadillac STS V 2009 List of elements for Horn Wiring Diagram for Cadillac STS V 2009: 17 G104 (on right front frame rail, near bumper bracket) G200 (in passenger compt, behind left kick panel) High note horn Horn assembly (left front corner of vehicle) Horn fuse 15a Horn relay Horn relay control Horn switch Hot at all times Inflatable restraint steering wheel module coil (top of steering column, behind steering wheel) Instrument panel module (ipm) (right side of dash, behind glove box) Low note horn Nca Tan Underhood fuse block (right front side of engine compartment) X276 X277
INSTRUMENT CLUSTER
3.6L VIN V 3.6L VIN V, Instrument Cluster Wiring Diagram (1 of 2) for Cadillac STS V 2009 List of elements for 3.6L VIN V, Instrument Cluster Wiring Diagram (1 of 2) for Cadillac STS V 2009: 78 (in middle rear of right rear door) right rear door latch (in passenger compt, behind right kick panel) g201 Abs ind Air bag ind Air bag/ ign fuse 10a Audible alarm Backlighting ctrl Backlighting ind Batt pos volt Brake fluid level switch (in master cylinder reservoir) Brake ind Charge ind Chk eng ind ctrl Class 2 (ecm) Computer data lines system Cruise ind Dic sw low ref Dic sw sig Dic toggle sw Door open sw sig Driver information center (dic) display Ecm/tcm ign fuse 15a Ekm/i/p mdl fuse 10a Engine controls system Engine coolant temperature ind Front fog lamps ind Fuel level gauge G101 (near left front strut tower, at bottom of inside fender well) G201 (in passenger compt, behind right kick panel) Gmlan Gmlan (ebcm) Gmlan (ecm) Gmlan (ipm) Gmlan (rim) Gmlan (sdm) Gmlan (tcm) Gmlan serial Ground High beam ind Hot at all times Hot w/ run crnk relay energized Hot w/run/crnk relay energized Hud fuse 10a Ign 1 volt Inflatable restraint i/p module indicator Instrument panel cluster (ipc) Ipc J/c J600 J800 Lane departure warning ind Left turn ind Logic Low spd gmlan data Low tire pressure ind Malfunction ind Oil level ind Park lights ind Pass seat belt ind Pass seat belt ind ctrl Passenger door control module (inside passenger's door) Passenger door latch (in middle rear of left rear door) Pnk Power distribution system Right rear door control module (inside right rear door) Right rear fuse block (under right side of rear seat) Right turn ind S18 S20 Seat belt ind Security ind Sensor signal Speedometer gauge Tachometer gauge Tap up/ down enable ind Temperature gauge Traction off ind Underhood fuse block (right front side of engine compt) 3.6L VIN V, Instrument Cluster Wiring Diagram (2 of 2) for Cadillac STS V 2009 List of elements for 3.6L VIN V, Instrument Cluster Wiring Diagram (2 of 2) for Cadillac STS V 2009: 55 (in fuel tank jumper tan (in fuel tank) fuel pump & sender assembly (top left of fuel tank) secondary fuel level sensor 5v ref Auto Battery positive volt Computer data lines system Courtesy lmp sw on sig Display Door open sw sig Driver door control module (inside driver's door) Driver door latch (in middle rear of driver door) Eng/ met Engine control module (ecm) (front of engine, on right valve cover) Engine controls system Engine oil pressure (eop) sensor (on left side of engine, attached to oil filter adapter housing) G200 (in passenger compt, behind left kick panel) Gmlan serial data Ground Ground distribution system Harness, 28 cm from fuel tank pressure sensor connector) j406 Head up display (hud) Hud switch low ref I/p dimmer sw sig I/p dimmer switch Image dn Image up Info dn Info reset Info up Instrument panel module (ipm) (right side of dash, behind glove box) Interior lights system J500 J700 Jx201 (on dash harness, under dashboard, near firewall grommet) Left rear door control module (inside left rear door) Left rear door latch (in middle rear of passenger door) Lo spd gmlan serial data Logic Low ref Low spd gmlan data Night vision image dimming Night vision image down Night vision image up sig Oil sw sig Park brake switch (at base of brake pedal) Pk brk sw sig Pnk Sensor sig Serial data + Serial data - Tan Trip a/b Trip reset W/ head-up display
4.4L VIN D 4.4L VIN D, Instrument Cluster Wiring Diagram (1 of 2) for Cadillac STS V 2009 List of elements for 4.4L VIN D, Instrument Cluster Wiring Diagram (1 of 2) for Cadillac STS V 2009: 78 (in middle rear of right rear door) right rear door latch (in passenger compt, behind right kick panel) g201 Abs ind Air bag ind Air bag/ ign fuse 10a Audible alarm Backlighting ctrl Backlighting ind Batt pos volt Brake fluid level switch (in master cylinder reservoir) Brake ind Charge ind Chk eng ind ctrl Class 2 (ecm) Computer data lines system Cruise ind Dic sw low ref Dic sw sig Dic toggle sw Door open sw sig Driver information center (dic) display Ecm/tcm ign fuse 15a Ekm/i/p mdl fuse 10a Engine controls system Engine coolant temperature ind Front fog lamps ind Fuel level gauge G101 (near left front strut tower, at bottom of inside fender well) G201 (in passenger compt, behind right kick panel) Gmlan Gmlan (ebcm) Gmlan (ecm) Gmlan (ipm) Gmlan (rim) Gmlan (sdm) Gmlan (tcm) Gmlan serial Ground High beam ind Hot at all times Hot w/ run crnk relay energized Hot w/run/crnk relay energized Hud fuse 10a Ign 1 volt Inflatable restraint i/p module indicator Instrument panel cluster (ipc) Ipc J/c J600 J800 Lane departure warning ind Left turn ind Logic Low spd gmlan data Low tire pressure ind Malfunction ind Oil level ind Park lights ind Pass seat belt ind Pass seat belt ind ctrl Passenger door control module (inside passenger's door) Passenger door latch (in middle rear of left rear door) Pnk Power distribution system Right rear door control module (inside right rear door) Right rear fuse block (under right side of rear seat) Right turn ind S18 S20 Seat belt ind Security ind Sensor signal Speedometer gauge Tachometer gauge Tap up/ down enable ind Temperature gauge Traction off ind Underhood fuse block (right front side of engine compt) 4.4L VIN D, Instrument Cluster Wiring Diagram (2 of 2) for Cadillac STS V 2009 List of elements for 4.4L VIN D, Instrument Cluster Wiring Diagram (2 of 2) for Cadillac STS V 2009: 57 (bottom center of engine oil pan) (4.4l) engine oil level/ temperature sensor (in fuel tank jumper harness, 28 cm from fuel tank pressure sensor connector) (in fuel tank) fuel pump & sender assembly (top left of fuel tank) secondary fuel level sensor 5v ref Auto Battery positive volt Computer data lines system Courtesy lmp sw on sig Display Door open sw sig Driver door control module (inside driver's door) Driver door latch (in middle rear of driver door) Eng/ met Engine control module (ecm) (on left front frame rail, below left headlamp assembly) Engine controls system Engine oil pressure (eop) sensor (on left side of engine) G200 (in passenger compt, behind left kick panel) Gmlan serial data Ground Ground distribution system Head up display (hud) Hud switch low ref I/p dimmer sw sig I/p dimmer switch Image dn Image up Info dn Info reset Info up Instrument panel module (ipm) (right side of dash, behind glove box) Interior lights system J406 J500 J700 Jx201 (on dash harness, under dashboard, near firewall grommet) Left rear door control module (inside left rear door) Left rear door latch (in middle rear of passenger door) Lo spd gmlan serial data Logic Low ref Low spd gmlan data Night vision image dimming Night vision image down Night vision image up sig Oil sw sig Park brake switch (at base of brake pedal) Pk brk sw sig Pnk Sensor sig Serial data + Serial data - Tan Temp sensor Trip a/b Trip reset W/ head-up display
4.6L VIN A 4.6L VIN A, Instrument Cluster Wiring Diagram (1 of 2) for Cadillac STS V 2009 List of elements for 4.6L VIN A, Instrument Cluster Wiring Diagram (1 of 2) for Cadillac STS V 2009: 78 (in middle rear of right rear door) right rear door latch (in passenger compt, behind right kick panel) g201 Abs ind Air bag ind Air bag/ ign fuse 10a Audible alarm Backlighting ctrl Backlighting ind Batt pos volt Brake fluid level switch (in master cylinder reservoir) Brake ind Charge ind Chk eng ind ctrl Class 2 (ecm) Computer data lines system Cruise ind Dic sw low ref Dic sw sig Dic toggle sw Door open sw sig Driver information center (dic) display Ecm/tcm ign fuse 15a Ekm/i/p mdl fuse 10a Engine controls system Engine coolant temperature ind Front fog lamps ind Fuel level gauge G101 (near left front strut tower, at bottom of inside fender well) G201 (in passenger compt, behind right kick panel) Gmlan Gmlan (ebcm) Gmlan (ecm) Gmlan (ipm) Gmlan (rim) Gmlan (sdm) Gmlan (tcm) Gmlan serial Ground High beam ind Hot at all times Hot w/ run crnk relay energized Hot w/run/crnk relay energized Hud fuse 10a Ign 1 volt Inflatable restraint i/p module indicator Instrument panel cluster (ipc) Ipc J/c J600 J800 Lane departure warning ind Left turn ind Logic Low spd gmlan data Low tire pressure ind Malfunction ind Oil level ind Park lights ind Pass seat belt ind Pass seat belt ind ctrl Passenger door control module (inside passenger's door) Passenger door latch (in middle rear of left rear door) Pnk Power distribution system Right rear door control module (inside right rear door) Right rear fuse block (under right side of rear seat) Right turn ind S18 S20 Seat belt ind Security ind Sensor signal Speedometer gauge Tachometer gauge Tap up/ down enable ind Temperature gauge Traction off ind Underhood fuse block (right front side of engine compt) 4.6L VIN A, Instrument Cluster Wiring Diagram (2 of 2) for Cadillac STS V 2009 List of elements for 4.6L VIN A, Instrument Cluster Wiring Diagram (2 of 2) for Cadillac STS V 2009: 57 (bottom center of engine oil pan) (4.4l) engine oil level/ temperature sensor (in fuel tank jumper harness, 28 cm from fuel tank pressure sensor connector) (in fuel tank) fuel pump & sender assembly (top left of fuel tank) secondary fuel level sensor 5v ref Auto Battery positive volt Computer data lines system Courtesy lmp sw on sig Display Door open sw sig Driver door control module (inside driver's door) Driver door latch (in middle rear of driver door) Eng/ met Engine control module (ecm) (on left front frame rail, below left headlamp assembly) Engine controls system Engine oil pressure (eop) sensor (on left side of engine) G200 (in passenger compt, behind left kick panel) Gmlan serial data Ground Ground distribution system Head up display (hud) Hud switch low ref I/p dimmer sw sig I/p dimmer switch Image dn Image up Info dn Info reset Info up Instrument panel module (ipm) (right side of dash, behind glove box) Interior lights system J406 J500 J700 Jx201 (on dash harness, under dashboard, near firewall grommet) Left rear door control module (inside left rear door) Left rear door latch (in middle rear of passenger door) Lo spd gmlan serial data Logic Low ref Low spd gmlan data Night vision image dimming Night vision image down Night vision image up sig Oil sw sig Park brake switch (at base of brake pedal) Pk brk sw sig Pnk Sensor sig Serial data + Serial data - Tan Temp sensor Trip a/b Trip reset W/ head-up display
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram (1 of 2) for Cadillac STS V 2009 List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Cadillac STS V 2009: 37 Computer data lines system Courtesy lamp ctrl Courtesy rly ctrl Courtesy sply ctrl Front overhead console courtesy/ reading lamps G201 (in passenger compt, behind right kick panel) G402 (in rear compt, to rear of left rear shock tower) Gmlan serial data Hot at all times I/p compart- ment lamp I/p compartment lamp switch Int lamp fuse 10a Int lamp relay J210 J215 (in dash harness, 65 cm from x200) J308 (in headliner harness, 82 cm from x308) J309 (in headliner harness, 92 cm from x308) J310 Left i/p courtesy lamp Left rear door courtesy lamp Left sun- shade Nca R17 R18 R19 R20 Rear compart- ment courtesy lamp Rear compartment lid release actuator Rear integration module (rim) (in left side of rear compt, under rear shelf) Rear overhead console courtesy/ reading lamps Right i/p courtesy lamp Right rear door courtesy lamp Right rear fuse block (under right side of rear seat) Right sun- shade Splice pack jx300 (on left frame rail, near left side of passenger seat) Splice pack jx303 (in passenger compt, on right frame rail, near right side of passenger seat) Trunk diode Courtesy Lamps Wiring Diagram (2 of 2) for Cadillac STS V 2009 List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Cadillac STS V 2009: 30 Ajar Amplifier powered woofer ctrl Computer data lines system Courtesy lamp ctrl high Courtesy lamp ctrl low Courtesy lamp sw on Driver door control module (inside driver's door) Driver door latch (in middle rear of driver door) G200 (in passenger compt, behind left kick panel) G201 (in passenger compt, behind right kick panel) Gmlan serial data I/p dimmer switch Instrument panel module (ipm) (right side of dash, behind glove box) J500 J600 J700 J800 Left front door courtesy lamp Left rear door control module (inside left rear door) Left rear door latch (in middle rear of passenger door) Lf door ajar Low reference Lr door ajar sw sig Passenger door control module (inside passenger's door) Passenger door latch (in middle rear of left rear door) Rf door ajar sw sig Right front door courtesy lamp Right rear door control module (inside right rear door) Right rear door latch (in middle rear of right rear door) Rr door ajar sw sig Instrument Illumination Wiring Diagram (1 of 2) for Cadillac STS V 2009 List of elements for Instrument Illumination Wiring Diagram (1 of 2) for Cadillac STS V 2009: 49 (in driver door trim harness, 71 cm from driver door lock switch connector) j504 (on dash harness, under dashboard, near firewall grommet) splice pack jx201 Auto B (not used) x215 Backlight dimming ctrl Backlight lamp ctrl Backlighting control Backlighting ind (8 bulbs) Batt pos volt Computer data lines system Courtesy lamp on sig Dimmer sw sig Driver door control module (inside driver's door) Driver door lock switch Driver window switch Ekm/i/p mdl fuse 10a G101 (near left front strut tower, at bottom of inside fender well) G200 (in passenger compt, behind left kick panel) G201 (in passenger compt, behind right kick panel) Gmlan serial data Ground Head Hot at all times Hvac control module (center of dash, below radio) I/p dimmer switch I/p mdl/ aldl fuse 10a Instrument panel cluster (ipc) Instrument panel module (ipm) (right side of dash, behind glove box) Interior rear compartment lid release switch J210 J226 J501 J601 Lamp ctrl sply vol Lic dim fuse 7.5a Logic Low reference Off Park Park lamp rly ctrl Passenger door control module (inside passenger's door) Passenger door lock switch Passenger window switch Power distribution system Prk lamp relay Radio Splice pack jx201 (on dash harness, under dashboard, near firewall grommet) Turn signal/ multi-function switch Underhood fuse block (right front side of engine compt) Instrument Illumination Wiring Diagram (2 of 2) for Cadillac STS V 2009 List of elements for Instrument Illumination Wiring Diagram (2 of 2) for Cadillac STS V 2009: 36 (in passenger compt, behind left kick panel) g200 (in steering column harness) j227 (in steering column harness) j228 (on left frame rail, near left side of passenger seat) splice pack jx300 Automatic transmission shift lever assembly Auxiliary hvac control module (w/ heated seat) Backlight lamp ctrl Computer data lines system F x276 F x277 From x212) Fuse 2a G200 (in passenger compt, behind left kick panel) G201 (in passenger compt, behind right kick panel) G402 (in rear compt, to rear of left rear shock tower) Gmlan serial data Hazard switch Ignition mode switch Inflatable restraint steering wheel module coil (top of steering column, behind steering wheel) J210 J224 J310 J311 J700 J800 Left rear door control module (inside left rear door) Left rear window switch Left steering wheel control switch Nca Right rear door control module (inside right rear door) Right rear window switch Right steering wheel control switch Splice pack jx201 (on dash harness, under dashboard, near firewall grommet) Steering column fuse block Sunroof switch (if equipped) Traction control switch
MEMORY SYSTEMS Driver"s Mirror Wiring Diagram for Cadillac STS V 2009 List of elements for Driver"s Mirror Wiring Diagram for Cadillac STS V 2009: 37 (inside driver door) 5v feed 5v ref 5v rtn Bat pos voltage Computer data lines system Ddm fuse 15a Driver door control module (ddm) Driver outside rearview mirror Driver window switch Drvr horiz pos sens sig Drvr vert pos sens sig G200 (in passenger compt, behind left kick panel) Gnd Ground Horiz motor Horiz pos sens Horiz pos sensor Hot at all times J500 J501 Left horiz Left rear fuse block (under left side of rear seat) Lft mir mtr dn ctrl Lft mir mtr lft ctrl Lft mir mtr up/rt ctrl Logic Low ref Low spd gmlan serial data Navigation system Right horiz Vert down Vert motor Vert pos sens Vert pos sensor Vert up W/ infotainment system 010 Memory Power Tilt & Power Telescopic Wiring Diagram for Cadillac STS V 2009 List of elements for Memory Power Tilt & Power Telescopic Wiring Diagram for Cadillac STS V 2009: 48 (in driver seat harness, 21 cm from driver seat adjuster motor assembly c2) (in driver seat harness, 25 cm from x300) (in steering column harness) (in steering column) Bat pos voltage Computer data lines system Driver seat adjuster motor assembly (under driver seat cushion) Driver seat lumbar motor assembly Driver seat recline motor assembly (under driver seat) Drv pwr seat ft vert mtr dn ctrl Drv pwr seat rear vert mtr dn ctrl G307 (in passenger compt, to left of driver seat, on left frame rail) Gnd Hot at all times Hud fuse 10a Instrument panel module (ipm) (right side of dash, behind glove box) J227 J302 J352 (in driver seat harness, 20 cm from driver seat adjuster motor assembly connector) J356 J363 Left rear fuse block (under left side of rear seat) Low spd gmlan serial data Mem mirror position sens 5v ref Mem seat/mirror sens low ref Memory seat module (msm) (under driver seat) Pnk Power distribution system Pwr seats circuit breaker 30a Red S362 (in driver seat harness, 16 cm from x300) Steering column tele mtr sig Steering column telescope actuator Steering column tilt motor Steering column tilt mtr sig Steering column tilt mtr up ctrl Steering wheel tilt actuator (in steering column) Steering wheel/ column tilt/ telescope switch Strg col tilt & tele dn sw sig Strg col tilt & tele fwd sw sig Strg col tilt & tele rwd sw sig Strg col tilt & tele up sw sig Tan Telescope in Telescope out Tilt down Tilt up Underhood fuse block (right front side of engine compt) Memory Seat Wiring Diagram (1 of 2) for Cadillac STS V 2009 List of elements for Memory Seat Wiring Diagram (1 of 2) for Cadillac STS V 2009: 66 (if equipped) driver seat lumbar switch Bat pos voltage Battery positive voltage Computer data lines system Down Driver seat adjuster switch Drv mem st recline mtr pos sens sig Drv pwr seat frt vert mtr dn ctrl Drv pwr seat frt vert mtr up ctrl Drv pwr seat horiz mtr fwd ctrl Drv pwr seat horiz mtr rwd ctrl Drv pwr seat lumbar mtr fwd ctrl Drv pwr seat lumbar mtr rwd ctrl Drv pwr seat lumbar mtr up ctrl Drv pwr seat rear vert mtr dn ctrl Drv pwr seat rear vert mtr up ctrl Drv pwr seat recline mtr fwd ctrl Drv pwr seat recline mtr rwd ctrl Drv seat lumbar dn sw sig Drv seat lumbar fwd sw sig Drv seat lumbar rwd sw sig Drv st lumbar up sw sig For- ward Front vertical down Front vertical up Frt vert dn sw sig Frt vert up sw sig G307 (in passenger compt, to left of driver seat, on left frame rail) Gnd Horiz fwd sw sig Horiz rwd sw sig Horizontal forward Horizontal rearward Hot at all times J302 J349 (w/ front heated seats) J354 Left rear fuse block (under left side of rear seat) Low spd gmlan serial data Mem mirror pos sens 5v ref Mem seat/mirror sens low ref Mem st frt vert mtr pos sens sig Mem st horiz mtr pos sens sig Mem st lumbar horiz pos sens sig Mem st lumbar vert pos sens sig Mem st rr vert mtr pos sens sig Memory power tilt & power telescopic circuit Memory seat module (under driver seat) Msm fuse 10a Pnk Pwm serial data Pwr seats circuit breaker 30a Rear vert dn sw sig Rear vert up sw sig Rear vertical down Rear vertical up Rear- ward Recline forward Recline rearward Seat recline mtr fwd ctrl Seat recline mtr rwd ctrl Steering column tele mtr fwd Steering column tele mtr sig Steering column tilt mtr sig Steering column tilt mtr up ctrl Tan Memory Seat Wiring Diagram (2 of 2) for Cadillac STS V 2009 List of elements for Memory Seat Wiring Diagram (2 of 2) for Cadillac STS V 2009: 25 (in driver seat harness, 16 cm from x300) j362 (in driver seat harness, 20 cm from driver seat adjuster motor assembly connector) j352 (in driver seat harness, 25 cm from x300) j356 (in driver seat harness, 39 cm from driver seat recline motor connector) (under driver seat cushion) (if equipped) driver seat adjuster motor assembly Climate control seat module (under right front seat) Driver lumbar position sensors Driver seat front vertical motor Driver seat front vertical position sensor Driver seat horizontal motor Driver seat horizontal position sensor Driver seat lumbar motor assembly (if equipped) (in driver seat back) Driver seat rear vertical motor Driver seat rear vertical position sensor Driver seat recline motor assembly (under driver seat) Driver seat recline position sensor Horizontal J351 (w/ power lumber seat) J363 (in driver seat harness, 21 cm from driver seat adjuster motor assembly c2) Memory power tilt & power telescopic circuit Pnk Pwm serial data Red Tan Vertical Passenger"s Mirror Wiring Diagram for Cadillac STS V 2009 List of elements for Passenger"s Mirror Wiring Diagram for Cadillac STS V 2009: 41 5v feed 5v ref 5v rtn Bat pos voltage Computer data lines system Ddm fuse 15a Driver door control module (inside driver's door) Driver window switch Frt pdm fuse 15a G200 (in passenger compt, behind left kick panel) G201 (in passenger compt, behind right kick panel) Gnd Ground Horiz motor Horiz pos sens Horiz pos sensor Hot at all times J500 J501 J600 Left horiz Left rear fuse block (under left side of rear seat) Logic Low ref Low spd gmlan serial data Navigation system Pass horiz pos sens sig Pass mir mtr lft ctrl Pass vert pos sens sig Passenger door control module (inside passenger's door) Passenger outside rearview mirror Right horiz Right rear fuse block (under right side of rear seat) Rt mir mtr dn ctrl Rt mir mtr up/rt ctrl Vert down Vert motor Vert pos sens Vert pos sensor Vert up W/ infotainment system 010
NAVIGATION Navigation Wiring Diagram for Cadillac STS V 2009 List of elements for Navigation Wiring Diagram for Cadillac STS V 2009: 58 (or 1782) (or nca) (right rear of radio) navigation antenna (w/ 15 speaker) audio/video adapter 3.6l 4.4l & 4.6l Am/fm1 Am/fm1 antenna signal Antenna Antenna coax x5 Aux det sig Aux detect sig Aux vid hi sig Aux video hi signal x1 Batt positive volt Case ground Cellular microphone signal Cellular telephone microphone sig Coax Computer data lines system Drain wire Engine control module (ecm) (3.6l: front of engine, on right valve cover) (except 3.6l: on left front frame rail, below left headlamp assembly) Fm1 antenna Fm1 antenna signal Fm2 Fm2 antenna signal G402 (in rear compt, to rear of left rear shock tower) Ground Hot at all times Inside rearview mirror (isrvm) J/c Lh aux aud sig Lh aux audio sig Lo spd gmlan serial data Nca Pnk Radio Radio antenna coax Radio antenna module (above center rear of headliner) Radio rear window antenna Rdo/ onstar fuse 10a Rear object sensor control module (in left side of rear compt, under rear shelf) Rh aux aud sig Rh aux audio sig Right rear fuse block (under right side of rear seat) S15 S17 Vehicle communication interface module (vcim) (in rear compt, near right rear strut tower) Vehicle speed sig Vics-fm3 antenna Vics-fm3 antenna signal Voice recog aud low ref Voice recog low Voice recog sig W/ hid headlamps W/ infotainment system 012, 014 & 015 W/ intelligent high beam control W/ vehicle communication system Parking Assistant Wiring Diagram for Cadillac STS V 2009 List of elements for Parking Assistant Wiring Diagram for Cadillac STS V 2009: 66 (in rear compt, to rear of left rear shock tower) g402 Backup lamp feed Batt positive volt Bck/up lamp fuse 10a Bck/up lamp relay Center amber ind Center amber ind ctrl Computer data lines system Driver door control module (inside driver's door) Driver outside rearview mirror G401 (in rear compt, to rear of right rear shock tower) Gnd Ground Hot at all times Hot w/ run/crnk relay energized Ign 1 voltage J/c J403 (in rear fascia harness, 26 cm from right rear middle object sensor connector) J407 J409 J414 (in body harness, near rim module) Led sig Left amber ind Left amber ind ctrl Left rear corner object alarm sensor (on left rear corner of rear fascia) Left rear fuse block (under left side of rear seat) Left rear middle object alarm sensor (on left rear middle of rear fascia) Left side object sensor (on left rear of vehicle) Low reference Lr corner object sens sig Lr middle object sens sig Navigation circuit Object sens low ref Object sens sply voltage Passenger door control module (inside passenger's door) Passenger outside rearview mirror Pnk R36 R37 R38 R40 Rear integration module (rim) (in left side of rear compt, under rear shelf) Rear object sensor control module (in left side of rear compt, under rear shelf) Rear parking assist (rpa) diagnostic connector (green one pin connector, beneath rear shelf) Rear parking assist (rpa) display Rear parking assist chime sig Rear parking diagnostic sig Rear parking display sply volt Red ind Red ind ctrl Reverse relay coil feed Right rear corner object alarm sensor (on right rear corner of rear fascia) Right rear fuse block (under right side of rear seat) Right rear middle object alarm sensor (on right rear middle of rear fascia) Right side object sensor (on left rear of vehicle) Rim/rpa/ isrvm/clm fuse 10a Rr corner object sens sig Rr middle object sens sig Rt trn/ sbza fuse 10a S22 S24 S25 S27 Sensor signal Serial data Vehicle speed sig
PASSIVE RESTRAINTS Passive Restraints Wiring Diagram for Cadillac STS V 2009 List of elements for Passive Restraints Wiring Diagram for Cadillac STS V 2009: 42 (under center console) 10a Air bag/ batt fuse 10a Air bag/ ign fuse pnk Battery b+ C nca Case ground Class 2 (sdm) Driver seat belt buckle Driver seat belt retractor (left "b" pillar) Driver seat belt switch Drv seat belt sw low ref Drv seat belt sw sig G306 G307 (in passenger compt, to left of driver seat, on left frame rail) Gmlan serial data Ground Hot at all times Hot w/ run relay energized Hot w/ run/crnk relay energized Ign Ign 1 vol Ign 3 fuse 10a Inflatable restraint sensing & diagnostic module (sdm) (under rear of center console) Instrument panel cluster (ipc) J/c Left rear fuse block (under left side of rear seat) Lo spd gmlan serial data Logic Nca Pass seat belt sw sig Passenger seat belt buckle Passenger seat belt retractor (right "b" pillar) Passenger seat belt switch Pnk Right rear fuse block (under right side of rear seat) S18 S19 Seat belt ind Splice pack jx201 (on dash harness, under dashboard, near firewall grommet) Splice pack jx300 (on left frame rail, near left side of passenger seat) Splice pack jx303 (in passenger compt, on right frame rail, near right side of passenger seat)
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 6) for Cadillac STS V 2009 List of elements for Power Distribution Wiring Diagram (1 of 6) for Cadillac STS V 2009: 74 (in passenger seat harness, 24 cm from passenger seat adjuster switch connector) j353 (right front side of engine compt) underhood fuse block (under left side of rear seat) left rear fuse block 200a Abs fuse 25a Abs mtr fuse 50a Air bag/ batt fuse 10a Amp fuse 30a Audio amplifier Battery Bck/up lamp fuse 10a Bck/up lamp relay Ddm fuse 15a Driver back ventilated seat blower motor Driver cushion ventilated seat blower motor Driver door module (ddm) Driver seat adjuster switch Driver seat lumbar switch Electronic brake control module (ebcm) Generator Inflatable restraint sensing & diagnostic module (sdm) Inline fuse generator J/c J302 (in body harness, 58 cm from right rear fuse block c1) Left front speaker Left rear door control module Left rear fuse block (under left side of rear seat) Lpdb 1 fuse 50a Lpdb 2 fuse 50a Lt pos relay Memory seat module (msm) Memory seat module (msm) (if equipped) Msm fuse 10a Passenger seat adjuster switch Passenger seat lumbar switch Pos lamp fuse 10a Pwr seats circuit breaker 30a R13 R18 R26 R29 R31 R32 R36 R37 Rear dr mdl fuse 15a Rear shlf spkr fuse 15a Red Red/ (in passenger seat harness, 17 cm from passenger seat adjuster switch connector) j354 Right rear door control module Rt pos relay S12 S13 S14 S20 S21 S22 S23 Speaker Starter motor Stdby lamp relay Subwoofer To elc cmprsr fuse (diagram 2 of 6) To inclr pump fuse (diagram 2 of 6) To rpdb 2 fuse (diagram 2 of 6) Trunk relse relay Trunk relse sw fuse 7.5a Valet switch W/ climate control seats W/ infotainment system 010 W/ infotainment system 012/014/015 W/ power lumbar seat W/o power lumbar seat X1 b Power Distribution Wiring Diagram (2 of 6) for Cadillac STS V 2009 List of elements for Power Distribution Wiring Diagram (2 of 6) for Cadillac STS V 2009: 56 (in body harness, 86 cm from g306) j303 (in passenger seat harness, 32 cm from x307) (w/ climate control seats) j355 (not used) (under left side of rear seat) left rear fuse block (under right side of rear seat) right rear fuse block Automatic level control (alc) compressor Automatic transmission shift lever B x1 C x2 Digital radio receiver (if equipped) Driver seat belt retractor Driver window motor Elc cmprsr fuse 30a Elc cmprsr relay Elc exh fuse 10a Electronic suspension control (esc) module From a lpdb 1 fuse (diagram 1 of 6) From b pos lamp fuse (diagram 1 of 6) From c ddm fuse (diagram 1 of 6) G402 (in rear compt, to rear of left rear shock tower) Ign 3 fuse 10a Inclr pump fuse 10a Inclr pump relay J/c Left rear window motor Mrtd mdl fuse 25a Passenger back ventilated seat blower motor (w/ climate control seats) Passenger cushion ventilated seat blower motor (w/ climate control seats) Passenger seat belt retractor Passenger window motor R21 R22 R23 R25 Rear heated seat control module Rear htd/ seats fuse 20a Rf htd/ seat/xm fuse 20a Right rear window motor Rpdb 2 fuse 50a Run relay Seat climate control module Television antenna module To cnstr vent fuse (diagram 3 of 6) To jx300 (pin 31) (diagram 6 of 6) To rpdb 1 fuse (diagram 3 of 6) Traffic information receiver Tv/vics/ afs/scm fuse 10a Underhood fuse block (right front side of engine compt) Vehicle stability control module W/ active brake control W/ climate control seats W/ climate control seats & front heater seat W/ infotainment system W/ infotainment system 014/015 W/ variable real time damping magneto rheological Wndw mtrs circuit breaker 30a Power Distribution Wiring Diagram (3 of 6) for Cadillac STS V 2009 List of elements for Power Distribution Wiring Diagram (3 of 6) for Cadillac STS V 2009: 84 (under right side of rear seat) right rear fuse block A x3 Cnstr vent fuse 10a D x276 Diff pump fuse 15a Diff pump relay Evaporative emission (evap) canister vent solenoid valve From d rpdb 2 fuse (diagram 2 of 6) From rf htd/ e seat/xm fuse (diagram 2 of 6) Frt pdm fuse 15a Fuel pump fuse 20a Fuel pump relay G401 (in rear compt, to rear of right rear shock tower) Harness) Heated steering wheel control module Heater steering wheel Htd str fuse 7.5a Inflatable restraint steering wheel module coil Inside rearview mirror (isrvm) Int lamp fuse 10a Int lamp relay J/c J221 (in steering column pnk J407 Left side object sensor Lt trn/ ldw fuse 10a Passenger door control module Pnk Power steering control module R12 R16 R17 R21 R22 R23 R25 R26 R27 R37 Radio Rdo/ onstar fuse 10a Rear defog relay Rear integration module (rim) Rear object sensor control module Rear/ defog fuse 40a Red/ (in passenger door harness, 34 cm from front passenger window motor connector) j602 Right front speaker Right rear fuse block (under right side of rear seat) Right side object sensor Rim fuse 10a Rim/rpa/ isrvm/clm fuse 10a Rpdb 1 fuse 50a Rt trn/sbza fuse 10a Run/ crnk fuse 10a Run/ crnk relay S/roof fuse 20a S10 S11 S15 S16 S17 S22 S23 S24 S25 Steering wheel speed/ position sensor Stop lamp relay Stop lamps fuse 10a Sunroof control module (if equipped) Tan To afs fuse (diagram 4 of 6) To air bag/ ign fuse (diagram 4 of 6) To jx201 (pin 10) (diagram 6 of 6) Underhood fuse block (right front side of engine compt) Vehicle communication interface module (vcim) (if equipped) Vehicle direction alert alarm warning module Vehicle stability control module W/ active brake control W/ infotainment system 010 W/ infotainment system 012/ 014/015 W/ lane departure warning W/ side obstacle detection sensor indicator X277 d Yaw & lateral acceler ometer sensor Power Distribution Wiring Diagram (4 of 6) for Cadillac STS V 2009 List of elements for Power Distribution Wiring Diagram (4 of 6) for Cadillac STS V 2009: 54 (3.6l) (4.4l/4.6l) (right front side of engine compt) underhood fuse block (under right side of rear seat) right rear fuse block Afs fuse 30a Air bag/ign fuse 10a Automatic headlamp dimming relay Automatic transmission Aux outlet fuse 20a Center console accessory power outlet Center console compartment accessory power outlet Data link connector (dlc) Ecm/tcm batt fuse 10a Ekm/ ip mdl fuse 10a Engine control module (ecm) From f rpdb 1 fuse (diagram 3 of 6) From g rim/rpa/ isrvm/clm fuse (diagram 3 of 6) From h frt pwr outlet fuse (diagram 4 of 6) Front cigar lighter Frt pwr outlet fuse 15a G201 (in passenger compt, behind right kick panel) Hdlp wash circuit breaker 30a Head up display (hud) (if equipped) Headlamp washer fluid pump relay (w/ high intensity discharge) Hud fuse 10a I/beam fuse 15a I/p accessory power outlet I/p mdl/ aldl fuse 10a Inflatable restraint i/p module indicator Inflatable restraint passenger presence system (pps) module Inflatable restraint sensing & diagnostic module (sdm) Instrument panel cluster (ipc) Instrument panel module (ipm) J/c J212 J311 Pnk Power steering control module (pscm) Rear cigar lighter Red Remote control door lock receiver (rcdlr) S18 S19 S20 S21 Steering wheel/ column tilt/ telescope switch (w/ alarm taxi) To v/chk fuse (diagram 4 of 6) To wpr fuse (diagram 5 of 6) V/chk fuse 10a W/ active brake control W/ cigarette lighter W/ high beam control intelligent W/o cigarette lighter X1 h Power Distribution Wiring Diagram (5 of 6) for Cadillac STS V 2009 List of elements for Power Distribution Wiring Diagram (5 of 6) for Cadillac STS V 2009: 52 (in body harness, 55.5 cm from x305 inline connector) (w/ wiper system) j411 (right front side of engine compt) underhood fuse block A/c cltch fuse 10a A/c cmprsr cltch relay Accy relay Blwr fuse 40a Ccp/ rly coils fuse 10a Distance sensing cruise control (dscc) module Fan 1 fuse 30a Fan 2 fuse 30a Fog lamp relay From ekm/ i i/p mdl fuse (diagram 4 of 6) From j blwr fuse (diagram 5 of 6) Frt blwr relay Fuel cool fuse 10a Fuel cool relay G104 (on right front frame rail, near bumper bracket) Headlamp leveling module (if equipped) Headlamp washer fluid pump relay (if equipped) Hi beam relay Hi fan spd relay Hid Horn fuse 15a Horn relay Hvac control module Lo beam w/o hid/ hid relay Lo fan spd relay Prk lamp relay Pwr/trn relay Rain snsr/ tpm fuse 7.5a Strtr fuse 30a Strtr relay Tire pressure module (if equipped) To instrument panel module (ipm) (pin 1 connector x2) (diagram 6 of 6) To pwr/trn relay (diagram 5 of 6) To run crnk relay (diagram 6 of 6) Traffic information receiver W/ adaptive automatic cruise control W/ cover wheel W/ infotainment system 015 W/ tire pressure W/ wiper system W/o cover wheel W/o tire pressure Windshield outside moisture sensor (if equipped) Windshield wiper inhibit relay Windshield wiper/ washer switch Wpr fuse 30a Wpr hi relay Wpr spd relay Wpr sw/vics fuse 7.5a X320 Power Distribution Wiring Diagram (6 of 6) for Cadillac STS V 2009 List of elements for Power Distribution Wiring Diagram (6 of 6) for Cadillac STS V 2009: 48 (not used) (right front side of engine compt) underhood fuse block 3.6l 4.4l & 4.6l Abs ign fuse 15a Acc ind Accessory voltage Accy ind cntrl Air quality sensor (if equipped) Automatic transmission Ccp fuse 10a Ecm/tcm ign fuse 15a Engine control module (ecm) From accy relay (diagram 5 of 6) From left rear fuse block (run relay) (diagram 2 of 6) From right rear fuse block (run/crnk relay) (diagram 3 of 6) From underhood fuse block n (accy relay) (diagram 5 of 6) G104 (on right front frame rail, near bumper bracket) Htd wash/ aqs fuse 10a Hvac control module Ign 1 voltage Ign mode sw sply volt Ignition mode switch Illum Instrument panel cluster (ipc) Instrument panel module (ipm) (right side of dash, behind glove box) Interior lights system Ipm ign mode data sig Ipm ign mode sw ref volt Jx201 (on dash harness, under dashboard, near firewall grommet) Jx300 (on left frame rail, near left side of passenger seat) Left heated washer nozzle (if equipped) Mode control b/u Off Off in cntrl Off ind Pnk Rear defog relay Remote control door lock receiver (rcdlr) (under rear speaker shelf) Right heated washer nozzle (if equipped) Right rear fuse block Right rear fuse block (under right side of rear seat) Run crnk relay Run ign 3 voltage Start Start ind Start ind cntrl Voltage b/u
POWER DOOR LOCKS Power Door Locks Wiring Diagram (1 of 3) for Cadillac STS V 2009 List of elements for Power Door Locks Wiring Diagram (1 of 3) for Cadillac STS V 2009: 47 (right side of steering column) ignition mode switch (under right side of rear seat) right rear fuse block Active ant clock sig Active ant data sig Active ant low ref Ant low ref 1 Ant low ref 3 Ant low ref 4 Ant low ref 5 Automatic transmission shift lever Backup keyless entry antenna (inside center console compt (center)) Battery positive volt Coax Computer data lines system Driver information center (dic) display Ekm/ i/p mdl fuse 10a Exterior rear compartment lid release switch G402 (in rear compt, to rear of left rear shock tower) G404 (on left side "c" pillar, near rear window) Gmlan serial data Ground Hot at all times Ignition 1 voltage Ignition mode switch Instrument panel cluster (ipc) Jx201 (on dash harness, under dashboard, near firewall grommet) Keyless entry antenna (inside center console compt (rear)) Keyless entry sig 1 Keyless entry sig 3 Keyless entry sig 4 Keyless entry sig 5 Lf door handle sw sig Logic Low speed gmlan data Nca Pnk R21 Rear compartment keyless entry antenna (in back of rear bumper fascia on body (center)) Rear window keyless entry antenna (on rear window) Remote control door lock receiver (rcdlr) (under rear speaker shelf) Rf door handle sw sig Run/crank relay Sol sply volt Tan Tire pressure ant sig Trunk release ctrl sig Underhood fuse block (right front side of engine compt) Power Door Locks Wiring Diagram (2 of 3) for Cadillac STS V 2009 List of elements for Power Door Locks Wiring Diagram (2 of 3) for Cadillac STS V 2009: 60 (behind right kick panel) g201 (in driver door harness, 52 cm from driver window motor connector) j503 (in passenger compt, behind left kick panel) g200 (inside left rear door) left rear door control module (inside right rear door) right rear door control module Actuator lock ctrl Actuator unlock ctrl Back light ctr Battery b+ Battery pos voltage Computer data lines system Ddm fuse 15a Door ajar sw sig Door handle sw sig Door key sw sig Door latch ctrl Door lock ctrl Door lock sig Door open sw sig Door unlatch ctrl Door unlock ctrl Door unlock sig Driver door control module (inside driver door) Driver door handle Driver door handle switch Driver door latch (in middle rear of driver door) Driver door lock indicator (on top rear of driver door trim panel) Driver door lock switch Driver window switch G200 (in passenger compt, behind left kick panel) Gmlan serial data Ground Hot at all times Illum lamp Interior lights system J/c J500 J501 J502 (w/ infotainment system 012/014/015) J700 J800 Left front door handle keyless entry antenna Left rear door latch (in middle rear of passenger door) Left rear fuse block (under left side of rear seat) Lock Logic Nca Pnk Pnk a Pnk d Rear dr mdl fuse 15a Rear lid release Right rear door latch (in middle rear of right rear door) S12 S13 S14 Status ind sig gnd Status ind sply volt Tan Unlock Power Door Locks Wiring Diagram (3 of 3) for Cadillac STS V 2009 List of elements for Power Door Locks Wiring Diagram (3 of 3) for Cadillac STS V 2009: 66 (in passenger compt, behind left kick panel) g200 (in passenger compt, behind right kick panel) (right side of dash, behind glove box) instrument panel module (ipm) Battery pos voltage Computer data lines system Door ajar sw sig Door handle sw sig Door latch ctrl Door lock sw sig Door open sw sig Door unlatch ctrl Door unlock sw sig Fd1 Fd2 Frt pdm fuse 15a G201 G201 (in passenger compt, behind right kick panel) G402 (in rear compt, to rear of left rear shock tower) Gmlan serial data Ground Hot at all times Ign 1 volt Illu lamp Interior lights system Interior rear compartment lid release switch J/c J214 (in dash harness, 32 cm from ipm c3) J501 J600 J601 J602 (w/ infotainment system 012/014/015) J603 (39 cm from front passenger window motor connector) Left rear fuse block (under left side of rear seat) Lock Mode data sig Nca Passenger door control module (inside passenger's door) Passenger door handle Passenger door handle switch Passenger door indicator (on top rear of passenger door trim panel) Passenger door latch (in middle rear of left rear door) Passenger door lock switch Pnk R31 R32 R33 R35 Rear compartment lid latch (center rear of rear compt lid) Rear integration module (rim) (in left side of rear compt, under rear shelf) Ref volt Right front door handle keyless entry antenna Right rear fuse block (under right side of rear seat) S20 S21 S22 S23 Status ind sig gnd Status ind sply volt Trunk ajar sig Trunk diode Trunk release ctrl Trunk relse relay Trunk relse sw fuse 7.5a Unlock Valet lockout sw Valet switch
POWER MIRRORS Automatic Day/Night Mirror Wiring Diagram for Cadillac STS V 2009 List of elements for Automatic Day/Night Mirror Wiring Diagram for Cadillac STS V 2009: 44 Automatic day/night mirror Backup lamp voltage Bare Bck/up lamp relay Cellular signal Computer data lines system Drain wire Driver door control module (ddm) (inside driver's door) Driver outside rearview mirror G402 (in rear compt, to rear of left rear shock tower) Gmlan serial data Ground Headlights system High beam dim enable High beam dim status High beam rly ctrl High beam sply volt Hot at all times Hot w/ run/crnk relay energized Ignition voltage Inside rearview mirror (isrvm) Instrument panel module (ipm) (right side of dash, behind glove box) J/c Keypad signal Keypad supp volt Led sig Left rear fuse block (under left side of rear seat) Low reference Mirror signal Pnk R36 R37 R38 R40 Rear integration module (rim) (in left side of rear compt, under rear shelf) Reverse rly coil feed Right rear fuse block (under right side of rear seat) Rim/rpa/ isrvm/clm fuse pnk 10a S24 S26 Sound systems Vehicle communication interface module (vcim) (if equipped) (in rear compt, near right rear strut tower) Vehicle speed sig W/ intelligent high beam control Power Mirrors Wiring Diagram for Cadillac STS V 2009 List of elements for Power Mirrors Wiring Diagram for Cadillac STS V 2009: 44 Automatic day/ night mirror low ref Automatic day/ night mirror sig Automatic day/night mirror Batt positive voltage Batt volt Battery Computer data lines system Ddm fuse 15a Defogger system Driver door control module (inside driver door) Driver outside rearview mirror Driver window switch Fold motor Frt pdm fuse 15a G200 (in passenger compt, behind left kick panel) G201 (in passenger compt, behind right kick panel) Gmlan serial data Ground Heated motor element Horiz motor Hot at all times J500 J501 J502 (w/ infotainment system 012/014/015) J600 Left folding mirror motor extend control Left folding mirror motor retract control Left rear fuse block (under left side of rear seat) Lft mirror motor dn ctrl Lft mirror motor lft ctrl Lft mirror motor up/rt ctrl Logic Passenger door control module (inside passenger's door) Passenger mirror motor horiz/ver ctrl Passenger mirror motor horizontal ctrl Passenger mirror motor vertical ctrl Passenger outside rearview mirror Right folding mirror motor extend control Right folding mirror motor retract control Right rear fuse block (under right side of rear seat) Serial data gmlan Vert motor W/ infotainment system 010 W/ power folding mirrors
POWER SEATS Climate Control Seats Wiring Diagram for Cadillac STS V 2009 List of elements for Climate Control Seats Wiring Diagram for Cadillac STS V 2009: 50 (in driver seat harness, 15 cm from msm c1) j358 (in driver seat harness, 21 cm from msm c2) (in passenger compt, to left of driver seat, on left frame rail) g307 (in passenger seat harness, 10 cm from passenger climate control seat module c2) j361 (in passenger seat harness, 27 cm from passenger cushion cooled seat blower motor connector) (or pnk) Batt pos volt Climate control seat module (under right front seat) Driver back heated seat element (in driver seat back) Driver back ventilated seat blower motor (in driver seat back) Driver cushion heated seat element (in driver seat cushion) Driver cushion ventilated seat blower motor (in driver seat cushion) Fan spd cntrl Fan spd ctrl G307 (in passenger compt, to left of driver seat, on left frame rail) G402 (in rear compt, to rear of left rear shock tower) Ground Harness, 24 cm from passenger climate control seat module c1) j357 Hot at all times Ign 3 fuse 10a Ign 3 volt Instrument panel module (ipm) (right side of dash, behind glove box) J/c J349 J350 J354 J355 J359 J360 Jx300 (on left frame rail, near left side of passenger seat) Left rear fuse block (under left side of rear seat) Low ref Memory seat module (msm) (w/ memory) (under driver seat) Msm fuse 10a Ntc sig Passenger back heated seat element (in passenger seat back) Passenger back ventilated seat blower motor (in passenger seat back) Passenger cushion heated seat element (in passenger seat cushion) Passenger cushion ventilated seat blower motor (in passenger seat cushion) Pnk Pwm data R21 R22 R23 R25 Rf htd/ seat/xm fuse 20a Right rear fuse block (under right side of rear seat) Run relay Sply vltg Sply volt Front Seat Heater Wiring Diagram for Cadillac STS V 2009 List of elements for Front Seat Heater Wiring Diagram for Cadillac STS V 2009: 37 (in driver seat harness, 15 cm from msm c1) j358 (in passenger compartment, to left of driver seat, on left frame rail) g307 (in passenger seat harness, 10 cm from passenger climate control seat module c2) j361 (or pnk) (right side of dash, behind glove box) instrument panel module (ipm) Batt pos volt Climate control seat module (under right front seat) Driver back heated seat element (in driver seat back) Driver cushion heated seat element (in driver seat cushion) G307 (in passenger compt, to left of driver seat, on left frame rail) G402 (in rear compt, to rear of left rear shock tower) Ground Harness, 24 cm from passenger climate control seat module c1) j357 Hot at all times Ign 3 fuse 10a Ign 3 volt J/c J349 J350 J355 Jx300 (on left frame rail, near left side of passenger seat) Left rear fuse block (under left side of rear seat) Low ref Memory seat module (msm) (w/ memory) (under driver seat) Ntc sig Passenger back heated seat element (in passenger seat back) Passenger cushion heated seat element (in passenger seat cushion) Pnk Pwm data R21 R22 R23 R25 Rf htd/ seat/xm fuse 20a Right rear fuse block (under right side of rear seat) Run relay Sply volt Heated Steering Wheel Wiring Diagram for Cadillac STS V 2009 List of elements for Heated Steering Wheel Wiring Diagram for Cadillac STS V 2009: 32 D x276 D x277 G200 (in passenger compt, behind left kick panel) G401 (in rear compt, to rear of right rear shock tower) Ground Heated steering wheel Heated steering wheel control module (in steering column) Heated steering wheel on ind Hot at all times Htd str fuse 7.5a Ign 1 volt Ign 3 volt Ind ctrl Inflatable restraint steering wheel module coil (top of steering column, behind steering wheel) Instrument panel module (ipm) (right side of dash, behind glove box) J201 J202 J221 J228 Jx201 (on dash harness, under dashboard, near firewall grommet) Left steering wheel control switch Pnk R21 R22 R23 R25 Right rear fuse block (under right side of rear seat) Run/ crnk relay Sensor sig Sply volt Steering wheel control switch assembly Tan Passenger"s Lumbar Wiring Diagram for Cadillac STS V 2009 List of elements for Passenger"s Lumbar Wiring Diagram for Cadillac STS V 2009: 15 Down Fwd G307 (in passenger compt, to left of driver seat, on left frame rail) Horizontal Hot at all times J350 J353 Left rear fuse block (under left side of rear seat) Passenger seat lumbar motor Passenger seat lumbar switch Pnk Pwr seats circuit breaker 30a Red Rwd Vertical Passenger"s Power Seat Wiring Diagram for Cadillac STS V 2009 List of elements for Passenger"s Power Seat Wiring Diagram for Cadillac STS V 2009: 26 Down Front vertical down Front vertical up Fwd G307 (in passenger compt, to left of driver seat, on left frame rail) Gnd Horizontal forward Horizontal rearward Hot at all times J350 (w/ power lumbar seats) J353 (w/ power lumbar) Left rear fuse block (under left side of rear seat) Nca Passenger seat adjuster motor assembly (under passenger seat cushion) Passenger seat adjuster switch Passenger seat front vertical motor Passenger seat horizontal motor Passenger seat rear vertical motor Passenger seat recline motor (under front passenger seat, part of seat adjuster motor assembly) Pwr seats circuit breaker 30a Rear Rear vertical down Rear vertical up Recline forward Recline rearward Tan Rear Heated Seats Wiring Diagram for Cadillac STS V 2009 List of elements for Rear Heated Seats Wiring Diagram for Cadillac STS V 2009: 46 (in rear seat back harness, 10 cm from c315) (in rear seat back harness, 15 cm from heated rear seat module c1) j365 (in rear seat back harness, 32 cm from right rear heated seat back element connector) (in rear seat back harness, 39 cm from right rear heated seat back element connector) j367 (not used) Auxiliary hvac control module G402 (in rear compt, to rear of left rear shock tower) Ground Hot in run Ignition 3 J366 J368 Left rear back heated seat element (in left rear seat back) Left rear cushion heated seat element (in left rear seat cushion) Left rear fuse block (under left side of rear seat) Left rear heated seat switch Left rear high temperature indicator Left rear low temperature indicator Left rear medium temperature indicator Lr element ctrl Lr element sply Lr high ind Lr htd sw sig Lr low ind Lr med ind Lr temp sns Lr temp sns low Not used Pnk Rear heated seat control module (in center of rear seat back) Rear htd/ seats fuse 20a Right rear back heated seat element (in right rear seat back) Right rear cushion heated seat element (in right rear seat cushion) Right rear heated seat switch Right rear high temperature indicator Right rear low temperature indicator Right rear medium temperature indicator Rr element ctrl Rr element sply Rr high ind Rr htd sw sig Rr low ind Rr med ind Rr temp sns Rr temp sns low Sw suply volt
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagram for Cadillac STS V 2009 List of elements for Power Top/Sunroof Wiring Diagram for Cadillac STS V 2009: 33 (in rear compt, to rear of right rear shock tower) g401 (not used) Battery Close sig Close vent sig Dimming Enable sig Enable sig x1 Express sig G402 (in rear compt, to rear of left rear shock tower) Ground Hot at all times Interior lights system J310 Open sig Open vent sig Pnk Rear integration module (rim) (in left side of rear compartment, under rear shelf) Right rear fuse block (under right side of rear seat) Roof close Roof express Roof open S/roof fuse 20a Serial data Sunroof control module (above headliner, near rear of sunroof) Sunroof motor Sunroof switch Tan Vent close Vent express Vent express sig Vent open X309
POWER WINDOWS Power Windows Wiring Diagram (1 of 2) for Cadillac STS V 2009 List of elements for Power Windows Wiring Diagram (1 of 2) for Cadillac STS V 2009: 41 Battery Computer data lines system Ddm fuse 15a Down Driver door control module (inside driver's door) Driver window motor (inside left front door) Express Front passenger window motor (inside right front door) Frt pdm fuse 15a G200 (in passenger compt, behind left kick panel) G201 (in passenger compt, behind right kick panel) Ground Hot at all times Illum Interior lights system J/c J303 J500 J502 (w/ infotaiment system 012, 014 & 015) J600 J601 J602 (w/ infotainment system 012, 014 & 015) Left rear fuse block (under left side of rear seat) Lf pwd mtr down ctrl Lf pwd mtr up ctrl Lo spd gmlan Logic Lr pwd sw up sig Passenger door control module (inside passenger's door) Passenger window switch Pwd status Rear dr mdl fuse 15a Rf express signal Rf pwd mtr down ctrl Rf pwd mtr up ctrl Rf pwd sw low ref Right rear fuse block (under right side of rear seat) S12 S13 S14 Wndw mtrs circuit breaker 30a Power Windows Wiring Diagram (2 of 2) for Cadillac STS V 2009 List of elements for Power Windows Wiring Diagram (2 of 2) for Cadillac STS V 2009: 42 Battery Computer data lines system Door locks system Down Driver window switch Express G200 (in passenger compt, behind left kick panel) G201 (in passenger compt, behind right kick panel) Ground Illum Interior lights system J501 J700 J800 Left front dn Left front up Left rear dn Left rear door control module (inside left rear door) Left rear up Left rear window motor (inside left rear door) Left rear window switch Lo spd gmlan Lock out Logic Lr express sig Lr pwd down sig Lr pwd mtr down ctrl Lr pwd mtr up ctrl Lr pwd sw up signal Pwd status Rf pwd sw low ref Rf pwd sw up sig Right front dn Right front up Right rear dn Right rear door control module (inside right rear door) Right rear up Right rear window motor (inside right rear door) Right rear window switch Rr express signal Rr pwd mtr down ctrl Rr pwd mtr up ctrl
RADIO 15-Speaker System Wiring Diagram (1 of 4) for Cadillac STS V 2009 List of elements for 15-Speaker System Wiring Diagram (1 of 4) for Cadillac STS V 2009: 80 (in rear compt, near right rear strut tower) vehicle communication interface module (vcim) (or 1782) (or nca) 3.6l 4.6l & 4.4l Am/fm1 antenna Am/fm1 antenna sig Amp aud prompt sig (+) Amp audio prompt sig (-) Antenna Antenna 14v sw sply Antenna 14v switched pwr Antenna coax Audio low ref Audio/video adapter Aux aud lh sig Aux aud rh sig Aux det sig Aux vid hi sig Auxiliary detection sig Auxiliary video hi sig Batt positive volt Case ground Cell tele voice low ref Cell tele voice sig Cellular microphone sig drain wire Cellular telephone mic sig Cntr chnl lo lvl aud sig Cntr chnl lo lvl aud sig (-) Coax Computer data lines system Drain wire Engine control module (ecm) (3.6l: front of engine, on right valve cover) (4.4l & 4.6l: on left front frame rail, below left headlamp assembly) Fm1 antenna Fm1 antenna sig Fm2 antenna Fm2 antenna sig G402 (in rear compt, to rear of left rear shock tower) Ground Hot at all times Inside rearview mirror (isrvm) Interior lights system J/c Led backlight dimming ctrl Left audio signal Left rear lo lvl aud (-) Lf lo lvl audio sig (+) Lf lo lvl audio sig (-) Lh aux audio signal (1) Lo speed gmlan serial data Lr lo lvl audio sig (+) Navigation antenna (right rear of radio) Nca Pnk Radio Radio antenna coax Radio antenna module (above center rear of headliner) Radio rear window antenna Rdo/ onstar fuse 10a Rear object sensor control module (in left side of rear compt, under rear shelf) Rf lo lvl audio sig (+) Rf lo lvl audio sig (-) Rh aux audio signal (1) Right audio signal Right rear fuse block (under right side of rear seat) Right rear lo lvl aud (-) Rr lo lvl audio sig (+) S15 S17 Subwoofer lo lvl aud sig Tan Vics-fm3 antenna Vics-fm3 antenna sig Voice recog aud low ref Voice recog aud sig Vss W/ hid headlamps W/ infotainment system 012, 014 & 015 W/ intelligent high beam control W/ vehicle communication system 15-Speaker System Wiring Diagram (2 of 4) for Cadillac STS V 2009 List of elements for 15-Speaker System Wiring Diagram (2 of 4) for Cadillac STS V 2009: 50 (in rear compt, to rear of left rear shock tower) g402 (in steering column harness) j225 (in steering column harness) j229 (right side of dash, behind glove box) instrument panel module (ipm) Antenna sig Audio common Audio common audio sig Audio sig Batt positive Battery Cellular & digital radio antenna Coax Computer data lines system Cruise control system Digital radio receiver (right side of rear package shelf) Down vol Drain wire G401 (in rear compt, to rear of right rear shock tower) Gnd Ground Inflatable restraint steering wheel module coil (top of steering column, behind steering wheel) J206 Left steering wheel control switch Lh audio sig Lh tv Lo spd gmlan Mute Nca Personalization Remote radio ctrl head acc sply volt Return Rh audio sig Rh tv Right steering wheel control switch Seek dn Seek up Serial data Srce Steering column radio ctrl sig lo spd gmlan serial data Tan Television antenna amplifier Television antenna module Television rear glass antenna Video rgb low ref Vol up Volt W/ digital radio W/o digital radio X276 X277 15-Speaker System Wiring Diagram (3 of 4) for Cadillac STS V 2009 List of elements for 15-Speaker System Wiring Diagram (3 of 4) for Cadillac STS V 2009: 24 (in rear compt, to rear of left rear shock tower) g402 014 & 015) Amp fuse 30a Amp pwrd wfr ctrl Center console speaker Ddm fuse 15a Frt pdm fuse 15a Gnd Hot at all times J602 Left rear compartment speaker Left rear fuse block (under left side of rear seat) Left rear speaker Nca Rear shlf spkr fuse 15a Red Rf htd/ seat/xm fuse 20a Right front speaker Right rear compartment speaker Right rear fuse block (under right side of rear seat) Right rear speaker Subwoofer speaker Tan Tv/vics/ afs/scm fuse 10a 15-Speaker System Wiring Diagram (4 of 4) for Cadillac STS V 2009 List of elements for 15-Speaker System Wiring Diagram (4 of 4) for Cadillac STS V 2009: 73 (in front overhead console) noise compensation microphone (in rear compt, to rear of left rear shock tower) (pins 26-32 not used) A nca Amp aud prompt sig (+) Amp audio prompt sig (-) Amp powered woofer ctrl 1 Amp powered woofer ctrl 2 Amp pwrd wfr cntrl Audio amplifier (left side of luggage compt) Battery positive volt Cell tele voice low ref Cell tele voice sig Center console speaker (+) Center i/p speaker Cntr chnl lo lev aud sig (-) Cntr chnl lo lvl aud sig Computer data lines system Console center speaker (-) Driver seat left speaker Driver seat right speaker Front center speaker (+) Front center speaker (-) G402 G402 (in rear compt, to rear of left rear shock tower) Gnd Ground Left front low level audio (-) Left front low level audio sig Left front seat left speaker (+) Left front seat left speaker (-) Left front seat right speaker (+) Left front seat right speaker (-) Left front speaker Left front speaker (+) Left front speaker (-) Left front tweeter speaker Left front woofer speaker (+) Left front woofer speaker (-) Left rear lo lev audio (-) Left rear lo lvl aud sig Left rear midrange speaker (+) Left rear midrange speaker (-) Left rear shelf speaker (+) Left rear shelf speaker (-) Low speed gmlan serial data Nca Noise reduc mic drain wire Noise reduction mic Passenger seat left speaker Passenger seat right speaker Rear subwoofer speaker (+) Rear subwoofer speaker (-) Red Right front low level audio (-) Right front low level audio sig Right front seat left speaker (+) Right front seat left speaker (-) Right front seat right speaker (+) Right front seat right speaker (-) Right front speaker (+) Right front speaker (-) Right front tweeter speaker Right front woofer speaker (+) Right front woofer speaker (-) Right rear lo lev audio (-) Right rear lo lvl aud sig Right rear midrange speaker (+) Right rear midrange speaker (-) Right rear shelf speaker (+) Right rear shelf speaker (-) Subwoofer lo lvl aud sig Tan 8-Speaker System Wiring Diagram (1 of 3) for Cadillac STS V 2009 List of elements for 8-Speaker System Wiring Diagram (1 of 3) for Cadillac STS V 2009: 56 (in rear compt, near right rear strut tower) vehicle communication interface module (vcim) (or 1782) (or nca) (right rear of radio) navigation antenna Am/fm1 antenna Am/fm1 antenna sig Antenna Antenna 14v sw sply Antenna 14v switched pwr Audio low ref Batt positive volt Case ground Cell tele voice low sig Cell tele voice sig Cell telephone microphone sig Cellular microphone sig Coax Computer data lines system Drain wire Fm1 antenna Fm1 antenna sig Fm2 antenna Fm2 antenna sig G402 (in rear compt, to rear of left rear shock tower) Ground Hot at all times Inside rearview mirror (isrvm) Interior lights system J/c Led backlight dimming cntrl Left audio signal Lf lo lvl audio sig (+) Lf lo lvl audio sig (-) Lo speed gmlan serial data Low ref Nca Pnk Radio Radio antenna coax Radio antenna module (above center rear of headliner) Radio rear window antenna Rdo/ onstar fuse 10a Rf lo lvl audio sig (+) Rf lo lvl audio sig (-) Right audio signal Right rear fuse block (under right side of rear seat) S15 S17 Tan Vics-fm3 antenna Vics-fm3 antenna sig Voice recog aud low ref Voice recog aud sig W/ hid headlamps W/ infotainment system 012, 014 & 015 W/ vehicle communication system 8-Speaker System Wiring Diagram (2 of 3) for Cadillac STS V 2009 List of elements for 8-Speaker System Wiring Diagram (2 of 3) for Cadillac STS V 2009: 35 (in rear compt, to rear of left rear shock tower) g402 Antenna sig Audio common Audio common audio sig Audio sig lh tv Batt positive Battery Cellular & digital radio antenna Coax Computer data lines system Digital radio receiver (on right side of package shelf) Drain wire Drain wire return G401 (in rear compt, to rear of right rear shock tower) Gnd Ground Hot at all times Left rear fuse block (under left side of rear seat) Lh audio sig Lo spd gmlan Nca Rf htd/ seat/xm fuse 20a Rh audio sig Rh tv Right rear fuse block (under right side of rear seat) Serial data Tan Television antenna amplifier Television antenna module Television rear glass antenna Tv/vics/ afs/scm fuse 10a Video rgb low ref Volt W/ digital radio W/o digital radio 8-Speaker System Wiring Diagram (3 of 3) for Cadillac STS V 2009 List of elements for 8-Speaker System Wiring Diagram (3 of 3) for Cadillac STS V 2009: 61 (in body harness, 40 cm from g200) j205 (in steering column harness) j229 (pins 20-32 not used) (pins 22-38 not used) Amp fuse 30a Audio amplifier (left side of luggage compt) Batt positive volt Cellular telephone voice low ref Cellular telephone voice signal Center i/p speaker Computer data lines system Cruise control system Front center spkr (+) Front center spkr (-) G402 (in rear compt, to rear of left rear shock tower) Ground Hot at all times Inflatable restraint steering wheel module coil (top of steering column, behind steering wheel) Instrument panel module (ipm) (right side of dash, behind glove box) J207 (in body harness, 58 cm from g200) J208 (in body harness, 36 cm from g201) J209 (in body harness, 41 cm from g201) J225 (in steering column harness) Left front speaker Left front tweeter speaker Left front woofer spkr Left rear fuse block (under left side of rear seat) Left rear midrange spkr (-) Left rear midrange spkr out (+) Left rear speaker Left steering wheel control switch Lf lo lvl audio (-) Lf lo lvl audio sig Low spd gmlan serial data Low speed gmlan serial data Mute Personalization Rear subwoofer spkr (-) Rear subwoofer spkr out (+) Red Remote radio ctrl head acc sply volt Rf lo lvl audio (-) Rf lo lvl audio sig Right front speaker Right front tweeter speaker Right front woofer spkr Right rear midrange spkr (-) Right rear midrange spkr out (+) Right rear speaker Right steering wheel control switch Seek dn Seek up Sig Srce Steering column radio ctrl Subwoofer speaker Tan Volume down Volume up X276 X277
SHIFT INTERLOCK Shift Interlock Wiring Diagram for Cadillac STS V 2009 List of elements for Shift Interlock Wiring Diagram for Cadillac STS V 2009: 25 4.6l 3.6l 5v ref A/t shift lock ctrl solenoid Automatic transmission Automatic transmission internal mode switch (ims) Automatic transmission shift lever Brake pedal position sensor (attached to top of brake pedal assembly) Computer data lines system Control solenoid valve assembly Engine control module (ecm) (4.6l: on left front frame rail, below left headlamp assembly) (3.6l: front of engine, on right valve cover) Ground Hot at all times Instrument panel module (ipm) Left rear fuse block (under left side of rear seat) Logic Low ref Nca P/n sig Remote control door lock receiver (rcdlr) (under rear speaker shelf) Sens sig Serial data Shift lock control Shift park signal Theft/ shft fuse 10a Transmission control module (tcm)
STARTING/CHARGING Charging Wiring Diagram for Cadillac STS V 2009 List of elements for Charging Wiring Diagram for Cadillac STS V 2009: 33 (not used) 200a 3.6l A current sens sply volt B current sens low ref Battery C current sens sig Charge ind Computer data lines system Current sens low ref Current sens sig Current sens sply volt Engine control module (ecm) (3.6l: front of engine, on right valve cover) (except 3.6l: on left front frame rail, below left headlamp assembly) Except 3.6l G105 (at back of underhood fuse block) G106 (on rear side of right cylinder head) Generator Generator field duty cycle sig Generator turn on sig Hi spd gmlan serial data bus + Hi spd gmlan serial data bus - Inline fuse generator (in engine harness, near generator) Instrument panel cluster (ipc) Instrument panel module (ipm) (right side of dash, behind glove box) Logic Low speed gmlan serial data Pnk Power distribution system Red Serial data + Serial data - Starter motor Tan Starting Wiring Diagram for Cadillac STS V 2009 List of elements for Starting Wiring Diagram for Cadillac STS V 2009: 26 (3.6l: front of engine, on right valve cover) (except 3.6l: on left front frame rail, below left headlamp assembly) engine control module (ecm) 3.6l Automatic transmission Automatic transmission internal mode switch (ims) Battery Ccp/rly coils fuse 10a Charging circuit Computer data lines system Control solenoid valve assembly Ecm/tcm serial data wake up Except 3.6l G100 (on rear side of right cylinder head) G105 (at back of underhood fuse block) G106 (on rear side of right cylinder head) Ign lock cylinder ctrl act signal Ign mode sw mode ctrl Ign mode sw mode volt Ignition mode switch Instrument panel module (ipm) (right side of dash, behind glove box) Red Starter motor Starter rly coil ctrl Strtr fuse 30a Strtr relay Transmission control module (tcm) Underhood fuse block (right front side of engine compt)
SUPPLEMENTAL RESTRAINTS Supplemental Restraints Wiring Diagram (1 of 2) for Cadillac STS V 2009 List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for Cadillac STS V 2009: 72 (in rear compartment, to rear of left rear shock tower) g402 (under center console) g306 Air bag/ batt fuse 10a Airbag/ ign fuse 10a Battery b+ Case ground Drvr pretensioner high Drvr pretensioner low Drvr seat belt sw low Drvr seat belt sw sig Forward sensor sig Gmlan serial data Gnd Ground Hot at all times Hot w/ run/crnk relay energized Ignition 1 Inflatable restraint i/p module indicator Inflatable restraint passenger presence system (pps) module (under passenger's seat) Inflatable restraint sensing & diagnostic module (sdm) (under rear of center console) J/c L side impact mod high L side impact mod low Left inflatable restraint front end sensor (left side of upper radiator support) Left inflatable restraint side impact module (on driver seat back, facing driver door) Left inflatable restraint side impact sensor (on base of left "b" pillar, behind trim panel) Left rear fuse block (under left side of rear seat) Left seat belt pretensioner (integral to driver seat belt buckle) Lf discriminating low Lf head curtain high Lf head curtain low Lf side impact sig Lf side impact voltage Nca Occ sensor serial data Off ind Off ind ctrl On ind On ind ctrl Pass i/p high Pass i/p low Pass i/p stage 2 high Pass i/p stage 2 low Pass pretensioner high Pass pretensioner low Pass seat belt sw sig Passenger air bag ind Pnk R side impact mod high R side impact mod low Rf discriminating low Rf discriminating sig Rf head curtain high Rf head curtain low Rf side impact sig Rf side impact voltage Right inflatable restraint side impact module (on passenger front seat back, facing passenger front door) Right inflatable restraint side impact sensor (on base of right "b" pillar, behind trim panel) Right rear fuse block (under right side of rear seat) Right seat belt pretensioner (integral to front passenger seat belt buckle) S18 S19 S20 S21 Seat belt ind Serial data Shorting bar Steer whl stage 1 high Steer whl stage 1 low Steer whl stage 2 high Steer whl stage 2 low Tan Supplemental Restraints Wiring Diagram (2 of 2) for Cadillac STS V 2009 List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for Cadillac STS V 2009: 39 (in left front seat belt buckle) left front seat belt switch (in passenger compt, to left of driver seat, on left frame rail) g307 (left "b" pillar) left front seat belt retractor (right "b" pillar) right front seat belt retractor A pnk Air bag ind Gmlan (sdm) Gmlan serial data Hot w/ run relay energized Ign Ign 3 fuse 10a Inflatable restraint i/p module (right side of dash) Inflatable restraint steering wheel module (on steering wheel) Inflatable restraint steering wheel module coil (top of steering column, behind steering wheel) Instrument panel cluster (ipc) J/c Jx201 (on dash harness, under dashboard, near firewall grommet) Jx300 (on left frame rail, near left side of passenger seat) Jx303 (in passenger compartment, on right frame rail, near right side of passenger seat) Left front seat belt switch Left inflatable restraint roof rail module (in passenger compartment roof rail, on left side, above "b" pillar) Left rear fuse block (under left side of rear seat) Logic Nca Pass seat belt ind Passenger door control module (inside passenger's door) Pnk Right front seat belt switch Right front seat belt switch (in right front seat belt buckle) Right inflatable restraint front end sensor (right side of upper radiator support) Right inflatable restraint roof rail module (in passenger compartment roof rail, on right side, above "b" pillar) Right rear door control module (inside right rear door) Seat belt ind Shorting bar Stage 1 Stage 2 Tan Vehicle communication interface module (vcim) (in rear compartment, near right rear strut tower) W/ onstar
TRANSMISSION Transmission Wiring Diagram (1 of 2) for Cadillac STS V 2009 List of elements for Transmission Wiring Diagram (1 of 2) for Cadillac STS V 2009: 49 (tcc) (pc) solenoid 3.6l 4.4l & 4.6l Automatic transmission Automatic transmission fluid pressure (tfp) manual valve position switch Computer data lines system Control solenoid valve assembly Driver information center (dic) display Engine control module (ecm) (except 3.6l: on left front frame rail, below left headlamp assembly) (3.6l: front of engine, on right valve cover) Exterior lights system Hot w/ run relay energized Ign Ign 3 fuse 10a Ign lock sig (or p/n sig) Instrument panel cluster (ipc) Instrument panel module (ipm) (right side of dash, behind glove box) J/c J113 (in engine harness, 19 cm from ho2s bank 1 sensor 1 connector) J147 (3.6l: in engine harness, 387 cm from x102) (4.6l: in engine harness, 24 cm from x102) Left rear fuse block (under left side of rear seat) Logic Low ref Pc 1 solenoid Pc 2 solenoid Pc 3 solenoid Pc 4 solenoid Pc 5 solenoid Pressure control (pc) solenoid valve 1 Pressure control (pc) solenoid valve 2 Pressure control (pc) solenoid valve 3 Pressure control (pc) solenoid valve 4 Pressure control (pc) solenoid valve 5 Serial data Shift solenoid (ss) valve 1 Shift solenoid (ss) valve 2 Ss 1 Ss 2 Sw sig stop lamp Tap down tap up/ Tfp 1 Tfp 3 Tfp 4 Tfp 5 Tft Torque converter clutch (tcc) pressure control (pc) solenoid valve Transmission control module (tcm) Transmission fluid temperature (tft) sensor Wake up serial Wake up serial ecm/tcm Transmission Wiring Diagram (2 of 2) for Cadillac STS V 2009 List of elements for Transmission Wiring Diagram (2 of 2) for Cadillac STS V 2009: 37 Automatic transmission Automatic transmission input shaft speed (iss) sensor Automatic transmission internal mode switch (ims) Automatic transmission output shaft speed (oss) sensor Automatic transmission shift lever Computer data lines system Control solenoid valve assembly Data bus (+) Data bus (-) Ecm/ tcm batt fuse 10a Ecm/ tcm ign fuse 15a Ecm/tcm serial data G100 (on rear side of right cylinder head) G201 (in passenger compt, behind right kick panel) Ground Hot at all times Hot w/ run/crnk relay energized Ign vol Iss low Iss/oss high J127 Nca Oss low Pnk Power distribution system Red Tan Tap up/ tap down trans enable switch Tap up/tap down sw sig stop lamp sw sig Tap up/tap down switch Transmission control module (tcm) Transmission range sig Transmission range sig a Transmission range sig b Transmission range sig c Transmission range sig p Underhood fuse block (right front side of engine compt)
TRUNK, TAILGATE, FUEL DOOR Trunk Release Wiring Diagram for Cadillac STS V 2009 List of elements for Trunk Release Wiring Diagram for Cadillac STS V 2009: 44 Computer data lines system Driver door control module (inside driver's door) Driver infor- mation center (dic) Driver window switch Exterior rear compartment lid release switch Fd1 Fd2 G200 (in passenger compt, behind left kick panel) G402 (in rear compt, to rear of left rear shock tower) Garage door opener Ground Hot at all times Instrument panel cluster (ipc) Instrument panel module (ipm) (right side of dash, behind glove box) Interior lights system Interior rear compartment lid release switch J/c J214 (in dash harness, 32 cm from ipm c3) J500 J501 Left rear fuse block (under left side of rear seat) Logic R31 R32 R33 R35 Rear compartment lid latch (center rear of rear compt lid) Rear hatch ajar switch Rear integration module (rim) (in left side of rear compartment, under rear shelf) Relay ctrl Remote control door lock receiver (rcdlr) (under rear speaker shelf) Right rear fuse block (under right side of rear seat) S21 S22 S23 Serial data Serial data sig ground serial data Splice pack jx201 (on dash harness, under dashboard, near firewall grommet) Sw signal Switch signal Trunk diode Trunk relse relay Trunk relse sw fuse 7.5a s20 Valet switch
WARNING SYSTEMS Chime Wiring Diagram for Cadillac STS V 2009 List of elements for Chime Wiring Diagram for Cadillac STS V 2009: 67 Audible alarm Auto Battery positive volt Brake fluid level switch (in master cylinder reservoir) Brake ind Computer data lines system Distribution Door ajar signal Door open signal Driver door control module (ddm) (inside driver's door) Driver door key sw sig Driver door key sw signal Driver door latch (in middle rear of driver door) Driver seat belt buckle Driver seat belt retractor (left "b" pillar) Driver seat belt switch Drv seat belt sw sig lo spd gmlan serial data Engine coolant temperature ind G101 (near left front strut tower, at bottom of inside fender well) G200 (in passenger compt, behind left kick panel) G201 (in passenger compt, behind right kick panel) G307 (in passenger compt, to left of driver seat, on left frame rail) Gmlan Gmlan serial data Gnd Ground Head Headlamps on sig Hot at all times Hot w/ park lamp relay energized Hot w/ run relay energized I/p mdl/ aldl fuse 10a Ign 3 fuse 10a Inflatable restraint sensing & diagnostic module (sdm) (under rear of center console) Instrument panel cluster (ipc) Instrument panel module (ipm) (right side of dash, behind glove box) Ipc J/c J210 J224 J500 Jx303 (in passenger compt, on right frame rail, near right side of passenger seat) Left rear fuse block (under left side of rear seat) Lf door ajar sw signal Lf door open sw sig Lic dim fuse 7.5a Lo spd gmlan serial data Logic Low ref Low speed gmlan serial data Low tire pressure ind Off Park Park brake sw sig Park brake switch (at base of brake pedal) Park lamp on sw sig Pnk Power Radio Seat belt ind Signal ground Sply volt 1 System Tan Turn signal/ multi-function switch Underhood fuse block (right front side of engine compt) V/chk fuse 10a Lane Departure Warning Wiring Diagram for Cadillac STS V 2009 List of elements for Lane Departure Warning Wiring Diagram for Cadillac STS V 2009: 17 Battery positive volt Computer data lines system Driver information center (dic) G402 (in rear compt, to rear of left rear shock tower) Gnd Hot at all times Instrument panel cluster (ipc) J310 Lane departure ind Left turn ind Logic Low spd gmlan serial data Lt trn/ ldw fuse 10a Radio Right rear fuse block (under right side of rear seat) Right turn ind Vehicle direction alert alarm warning module (in rear compartment) Tire Pressure Monitoring Wiring Diagram for Cadillac STS V 2009 List of elements for Tire Pressure Monitoring Wiring Diagram for Cadillac STS V 2009: 33 (in forward lamp harness, 15 cm from ambient air temperature sensor connector) j111 (in forward lamp harness, 20 cm from ambient air temperature sensor connector) j110 (in rear compt, to rear of right rear shock tower) g401 (in rear fascia harness, 33 cm from x401) j404 (rcdlr) Computer data lines system Ekm/ i/p mdl fuse 10a Gmlan Gmlan serial data Gnd Hot at all times Hot w/ acc relay energized Ign 1 volt Instrument panel cluster (ipc) J405 (in rear fascia harness, 30 cm from x401) J411 Left front tire pressure receiver (if equipped) Left rear tire pressure receiver (inside rear fascia panel, near left rear wheel) (if equipped) Lf tire press receiver sig Logic Low spd gmlan serial data Low tire pressure indicator Lr tire press receiver sig Rain snsr/ tpm fuse 7.5a Receiver low ref Receiver sply volt Remote control door lock receiver Rf tire press receiver sig Right front tire pressure receiver (if equipped) (behind right front fender) Right rear tire pressure receiver (if equipped) (inside rear fascia panel, near right rear wheel) Rr tire press receiver sig Tire pressure module (right rear quarter, behind trim panel) Underhood fuse block (right front side of engine compt)
WIPER/WASHER Wiper/Washer Wiring Diagram, with Wiper Inhibit System for Cadillac STS V 2009 List of elements for Wiper/Washer Wiring Diagram, with Wiper Inhibit System for Cadillac STS V 2009: 30 (behind inside rearview mirror) windshield outside moisture sensor (not used) (not used) x320 Acc volt Accy relay G101 (near left front strut tower, at bottom of inside fender well) G104 (on right front frame rail, near bumper bracket) G402 (in rear compt, to rear of left rear shock tower) Ground Hot at all times Ign Instrument panel module (ipm) (right side of dash, behind glove box) J305 J307 Logic Rain snsr/tpm fuse 7.5a Rear integration module (rim) (in left side of rear compt, under rear shelf) Underhood fuse block (right front side of engine compt) Washer switch Windshield wiper inhibit relay (left rear near fuse block) Windshield wiper/ washer module (left rear of engine compt, near windshield) Windshield wiper/washer switch Wiper mtr high speed Wiper sw on signal Wiper sw signal 1 Wiper sw signal 2 Wiper switch Wpr fuse 30a Wpr hi relay Wpr/sw/ vics fuse 7.5a Wiper/Washer Wiring Diagram, without Wiper Inhibit System (1 of 2) for Cadillac STS V 2009 List of elements for Wiper/Washer Wiring Diagram, without Wiper Inhibit System (1 of 2) for Cadillac STS V 2009: 34 (not used) Acc volt Accy relay G101 (near left front strut tower, at bottom of inside fender well) G104 (on right front frame rail, near bumper bracket) Ground Hdlp relay control Hot at all times Hot w/ run/crank relay energized Htd wash/aqs fuse 10a Instrument panel module (ipm) (right side of dash, behind glove box) J411 (w/ tire pressure) Left heated washer nozzle (if equipped) Pnk Rain snsr/tpm fuse 7.5a Right heated washer nozzle (if equipped) Sns sig 1 Sns sig 2 Tan Underhood fuse block (right front side of engine compt) W/ hid Washer fluid level sig Washer pump ctrl Washer switch Windshield wiper/ washer module (left rear of engine compt, near windshield) Windshield wiper/washer switch Wiper mtr high speed Wiper sw on signal Wiper sw signal 1 Wiper sw signal 2 Wiper switch Wpr fuse 30a Wpr hi relay Wpr/sw/vics fuse 7.5a Wiper/Washer Wiring Diagram, without Wiper Inhibit System (2 of 2) for Cadillac STS V 2009 List of elements for Wiper/Washer Wiring Diagram, without Wiper Inhibit System (2 of 2) for Cadillac STS V 2009: 16 Acc volt G101 (near left front strut tower, at bottom of inside fender well) G402 (in rear compt, to rear of left rear shock tower) Ground Hdlp wash circuit breaker 30a Headlamp washer fluid pump (inside washer fluid reservoir) Headlamp washer fluid pump relay (w/ high pressure headlamp washer) (mounted to core support, in front of underhood fuse block) Hot at all times J310 Sns sig 1 Sns sig 2 Tan Underhood fuse block (right front side of engine compt) Windshield outside moisture sensor (if equipped) (behind inside rearview mirror) Windshield washer fluid level switch (in washer fluid reservoir) Windshield washer fluid pump (on side of windshield washer reservoir)
