Diagram sections — 32 (90 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY CONTROL MODULES COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS MEMORY SYSTEMS NAVIGATION 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 CTS V 2004 List of elements for Automatic A/C Wiring Diagram (1 of 3) for Cadillac CTS V 2004: 78 3.2l 5 volt reference After boil pump relay ctrl Air inlet motor Amb air temp sensor sig Ambient light sensor signal Battery Blower fuse 40a Blower mtr speed ctrl Blower relay Blower relay ctrl Ccp fuse 10a Cmp clu relay Comp clutch fuse 10a Computer data lines system Coolant level switch signal Door a Door b Dr air temp door ctrl b Driver air temp door ctrl a Driver air temp posit signal E10 E11 E12 E13 E14 E15 E16 Evap low temp sens signal Evaporator temperature sensor (on right side of evaporator case) F10 F11 F12 F13 F14 F15 F16 G201 (behind right kick panel) Ground Hot at all times Hot in run Hvac control module (behind center of dash, below radio) Ign 3 fuse 10a Ignition 3 voltage Inside air temp sensor sig Inside air temperature sensor Joint connector Left rear fuse block (below left rear seat) Left sunload sensor signal Low reference Mode door ctrl a Mode door ctrl b Mode door position signal Nca Pass air temp door ctrl a Pass air temp door ctrl b Pass air temp posit signal Pnk R51 R52 R53 R54 R55 R56 R57 R58 Recirc door ctrl a Recirc door ctrl b Recirculation actuator (left side of the blower motor) Right sunload sensor signal S117 Serial data Solid state Splice pack sp302 Sunload sensor (top center of i/p, on defrost grill) Tan Underhood fuse block (right front of engine compartment) Volt Automatic A/C Wiring Diagram (2 of 3) for Cadillac CTS V 2004 List of elements for Automatic A/C Wiring Diagram (2 of 3) for Cadillac CTS V 2004: 47 (3.2l) (3.6l) (5.7l) (in blower motor harness, 115 cm from c323) s323 (in hvac module harness, 6 cm from c321) 3.2l A/c A/c compressor clutch Acc After boil coolant pump (on right side of engine block) After boil fuse 10a After boil relay (3.2l) Blower motor (on right side of hvac module) Blower motor control processor (on lower left side of blower motor) Blower mtr speed ctrl Cold Def Driver air temperature actuator (on hvac module) Dry air temp signal G100 (left rear side of engine) G100 (left rear side of engine) g132 (front of right cylinder head) g142 (rear of right cylinder head) G201 (behind right kick panel) Hot Hot at all times Ignition switch Lock Logic Mix motor Mode actuator Mode actuator (on left side of hvac module) Mode valve signal Nca Off Pass air temp signal Passenger air temperature actuator (on hvac module) Pnk R11 R12 R13 R15 Right rear fuse block (below right rear seat) Run S118 S202 (in the i/p harness, 48 cm from hazard switch connector) Splice pack sp200 (in right front of passenger compt, under dash, above steering column) Start Tan Automatic A/C Wiring Diagram (3 of 3) for Cadillac CTS V 2004 List of elements for Automatic A/C Wiring Diagram (3 of 3) for Cadillac CTS V 2004: 71 (3.2l) (except 3.2l) a (left rear side of engine) g100 (near left front strut tower) g101 (on right body rail, near right headlamp) g104 (or 452) (or 470) 26 cm from starter motor connector) 3.2l 3.2l 3.6l 3.6l 5.7l 5v reference A/c clutch relay ctrl A/c refrig press sensor A/c refrigerant pressure sensor (near the left front strut tower) Ambient air temperature sensor (under front bumper, near front grille) Coolant bypass solenoid Coolant level switch (in left front corner of coolant surge tank) Ect sensor signal Engine control module (ecm) (3.6l (vin 7): front of right valve cover) Engine controls system Engine coolant low level Engine coolant temperature (ect) sensor (3.2l: rear of intake manifold) (3.6l: side of left cylinder head) (5.7l: front of left cylinder head) Except 5.7l Feed Hi speed fan relay Hi speed fan relay ctrl High fan fuse 30a Hot at all times Hot in on or start Htr vlv/cltch fuse 10a Left cooling fan (left side of radiator) Lo speed fan relay Logic Low fan fuse 30a Low reference Low speed fan relay ctrl Main relay Main relay ctrl Message center Pnk Powertrain control module R14 R15 R16 R17 R18 R19 R20 R21 R22 R39 R40 R41 R42 R47 R48 R49 R50 Radio Right cooling fan (right side of radiator) Rtn S/p fan relay S111 s148 (3.6l) (3.2l) (in engine harness, (in engine harness under throttle body, 11.5 cm towards the right) S156 (3.6l (vin 7)) (in engine harness, approximately 24 cm from ebcm connector) Serial data Sig Splice pack sp102 (except 5.7l) (right front corner of engine compt) Tan Underhood fuse block (right front of engine compartment) Compressor Wiring Diagram for Cadillac CTS V 2004 List of elements for Compressor Wiring Diagram for Cadillac CTS V 2004: 43 (3.2l) (3.6l) (5.7l) (in engine harness, approximately 24 cm from ebcm connector) (3.6l (vin 7)) s156 (or tan) 3.2l 3.6l 470 (or 452) 5.7l 5v reference A/c clutch relay ctrl A/c compressor clutch A/c refrig press sens sig A/c refrigerant pressure sensor (near the left front strut tower) Acc Comp clutch fuse 10a Comp clutch relay Computer data lines system Engine control module (ecm) (3.6l: front of right valve cover) Except 3.2l Except 5.7l Feed G100 (left rear side of engine) g132 (front of right cylinder head) g142 (rear of right cylinder head) Hot at all times Ignition switch Lock Low reference Nca Off Pnk Powertrain control module (pcm) R55 R56 R57 R58 Return Run Sig Splice pack sp102 (except 5.7l) (right front corner of engine compartment) Splice pack sp200 (in right front of passenger compt, under dash, above steering column) Start Tan Underhood fuse block (right front of engine compartment)
ANTI-LOCK BRAKES Anti-lock Brakes Wiring Diagram (1 of 2) for Cadillac CTS V 2004 List of elements for Anti-lock Brakes Wiring Diagram (1 of 2) for Cadillac CTS V 2004: 79 (on right frame rail, near abs module) g110 (rear of right rear shock tower) g401 3.2l 3.6l 5 volt reference 5-volt reference 5.7l A10 A11 A12 A13 A14 Abs fuse 10a Abs fuse 50a Abs indicator sig B10 B11 B12 B13 B14 Bpp sensor signal Brake fluid pressure sensor sig Brake pedal position sensor (near top of brake pedal) Brake pump motor C10 C11 C12 C13 C14 Change brake pads service stability sys stability sys off stability sys ready stability sys engaged traction engaged traction suspended service suspension sys Class 2 serial data Computer data lines system Delivered torque signal Electronic brake control module (ebcm) (at right front corner of engine compartment) Engine control module (ecm) (front of right valve cover) Except 5.7l Extended travel brake sw sig Extended travel brake switch sig Ground High effort ctrl Hot at all times Hot in run or start Ign 1 relay Lateral accelerometer signal Lf wheel speed sens low ref Lf wheel speed sens sig Logic Low effort ctrl Low reference Lr wheel speed sens low ref Lr wheel speed sens sig Message center Message request Nca Pnk Powertrain control module (pcm) R21 R22 R23 R25 Radio Requested torque signal Rf wheel speed sens low ref Rf wheel speed sens sig Right rear fuse block (below right rear seat) Rr wheel speed sens low ref Rr wheel speed sens sig S130 Splice pack sp102 (right front corner of engine compt) Steering wheel position sig a Steering wheel position sig b Tan Throttle actuator control (tac) module (right front of engine compartment) Traction control data sig Traction control data signal Underhood fuse block (right front of engine compt) Variable effort steering actuator (on power steering rack assembly) W/ soft ride suspension system Yaw rate sensor signal Anti-lock Brakes Wiring Diagram (2 of 2) for Cadillac CTS V 2004 List of elements for Anti-lock Brakes Wiring Diagram (2 of 2) for Cadillac CTS V 2004: 50 (3.2l: in engine harness, 21 cm from generator connector) (3.6l: in engine harness, 21 cm from variable effort steering actuator) (5.7l: in engine harness, 10 cm from where the pre ho2s branches from the main harness) (behind right kick panel) g201 (behind the left kick panel) g200 (in body harness, 22.5 cm from vcim connector) s300 (in body harness, 22.5 cm from vcim connector) s301 (in body harness, 31 cm from audio amplifier connector) s306 (on back of left front wheel) left front wheel speed sensor (wss) (on back of right front wheel) right front wheel speed sensor (wss) (on inside of left rear wheel) left rear wheel speed sensor (wss) (on inside of right rear wheel) right rear wheel speed sensor (wss) 5.7l 5v reference A/t A12 Abs ind Abs ind sig B12 Bas fuse 15a Base relay Brake fluid pressure sensor (on rear of brake pressure modulator valve) Class 2 serial data Computer data lines system Electronic prndl (except 5.7l Except 5.7l Exterior lights system G402 (rear of left rear shock tower) Ground Hot at all times Instrument panel cluster (ipc) Joint connector Lateral accelerometer sig Left rear fuse block (below left rear seat) Logic Low reference Main harness) Rear integration module (under package shelf trim panel) S101 (w/ active brake control) S200 S302 (in body harness, 36 cm from audio amplifier connector) Sport mode Sport mode switch signal Steering wheel position sensor (near middle of steering column) Tan Traction control off ind Traction control switch Winter mode Winter mode switch signal Yaw rate & lateral acceleration sensor (w/ active brake control) (under center console) console) Yaw rate sens signal
ANTI-THEFT Anti-theft Wiring Diagram (1 of 2) for Cadillac CTS V 2004 List of elements for Anti-theft Wiring Diagram (1 of 2) for Cadillac CTS V 2004: 62 A11 A12 Accessory voltage Alarm on signal Armed signal B10 B12 Battery C (not used) Class 2 serial data Control pwr output Dash integration module (under right side of dash, above right closeout/ insulator panel) Door open Door open switch signal Driver door latch assembly Driver door module (on left door, under door trim) Ecm/tcm fuse 10a Exterior lights system F (not used) G200 (behind left kick panel) Ground Horn relay ctrl Horns system Hot at all times Hot in acc or run Hot in run or start Ign 1 voltage Ignition key Intrusion sensor Joint connector Left rear door latch assembly Left rear door module (under door trim panel) Left rear fuse block (below left rear seat) Nca Park lamp relay ctrl Pnk R31 R32 R33 R35 Reader/ exciter Rear integration module (under package shelf trim panel) Right rear door latch assembly Right rear door module (on right rear door, under door trim panel) Right rear fuse block (below right rear seat) Rim fuse 10a S20 S205 S21 S22 S23 S313 Sp303 (in passenger compartment, near right rear fuse block) Tan Theft deterrent control module (at top of steering column) Theft fuse 7.5a Transponder Trunk ajar switch signal Trunk dr rel sol relay Trunk dr release fuse 10a Trunk release relay ctrl Underhood fuse block (right front of engine compt) Anti-theft Wiring Diagram (2 of 2) for Cadillac CTS V 2004 List of elements for Anti-theft Wiring Diagram (2 of 2) for Cadillac CTS V 2004: 34 (in engine harness, approximately 18 cm from tcm connector) s154 (not used) (rear of left rear shock tower) g402 3.2l 3.6l 5.7l A13 A14 B10 Class 2 serial data Data link connector (under left side of dash) Door open Door open sw sig E10 Electronic brake control module (ebcm) (at right front corner of engine compartment) Engine control module (ecm) (3.6l (vin 7): front of right valve cover) Front passenger door latch assembly Front passenger door module (on right front door, under door trim panel) Gnd Ground Hvac control module (behind center of dash, below radio) Ign Instrument panel cluster (ipc) Interior lights system Logic Powertrain control module Radio Rear compartment lid release actuator (center of rear compartment lid) Right rear fuse block (below right rear seat) Security indicator Sp200 (in right front of passenger compt, under dash, above steering column) Sp300 (in passenger compartment, near left side of driver's seat) Trunk ajar switch signal Trunk diode
BODY CONTROL MODULES Dash Integration Module Wiring Diagram for Cadillac CTS V 2004 List of elements for Dash Integration Module Wiring Diagram for Cadillac CTS V 2004: 71 (3.6l: back of right cylinder head) (5.7l: on engine block, near generator) (3.2l: on engine block, near starter) g102 5 volt reference A10 A11 A12 Accessory Accessory voltage B10 B11 B12 Backlight lamps control Battery Cigar relay Cigar relay coil voltage Class 2 serial data Computer data lines system Control power output Courtesy lamp switch on signal Crank Dash integration module (under right side of dash, above right closeout/insulator panel) Dim/ aldl fuse 10a Dimming fuse 10a Drl relay ctrl Exterior lights system Flash to pass switch signal Fog lamp relay control Front fog lamps switch signal G200 (behind the left kick panel) Ground Ground distribution system Hazard switch output Hazard switch signal Headlamp hi beam relay ctrl Headlamp low beam relay ctrl Headlamp switch on signal Headlamp washer ground Headlights system Horn relay control Horns system Hot at all times Ignition 1 voltage Ignition lock cyl switch Ignition switch Inst panel lp dimmer sw low ref Inst panel lp dimmer switch Interior lights system Key in ignition switch signal Off/lock Park lamp relay Park lamp relay ctrl Park lp sw on signal Pnk Power distribution system R31 R32 R33 R34 R59 R62 Run S201 Shift interlock system Sp201 Tan Twilight sentinal delay signal Underhood fuse block (right front of engine compt) Voltage check fuse 10a Warning system Washer fluid level signal Wiper switch on signal Wiper/washer system Rear Integration Module Wiring Diagram for Cadillac CTS V 2004 List of elements for Rear Integration Module Wiring Diagram for Cadillac CTS V 2004: 54 5007 (or 5053) A/t shift lock ctrl solenoid control A10 A11 A12 Anti-lock brakes system Anti-theft system B10 B11 B12 Battery Class 2 serial data Computer data lines system Courtesy lamp control Courtesy lamp ctrl Courtesy lamp relay ctrl Defogger system Driver heated seat high/low signal Exterior lights system G401 (rear of right rear shock tower) Ground Hot at all times Htd seat ctrl module status signal Ignition 1 voltage Interior lights system Intrusion sensor alarm on signal Intrusion sensor armed signal Joint connector Pass htd seat ctrl module status signal Passenger heated seat high/low signal Pnk Power distribution system Power tops system Rap relay coil control Rear compt lid ajar switch sig Rear defog relay ctrl Rear integration module (under package shelf trim panel) Reverse relay ctrl Reverse signal (or winter mode signal) Right rear fuse block (below right rear seat) Rim fuse 10a Rim/ign sw fuse 10a S21 S22 Seats system Shift interlock system Sport mode switch signal Tan Theft deterrent system Traction control switch signal Transmissions system Trunk release relay ctrl Trunk, tailgate, fuel doors system Vehicle speed signal
COMPUTER DATA LINES Computer Data Lines Wiring Diagram for Cadillac CTS V 2004 List of elements for Computer Data Lines Wiring Diagram for Cadillac CTS V 2004: 64 (behind the left kick panel) g200 (in engine harness, 26 cm from starter motor connector) 3.2l 3.2l 3.6l 3.2l a/t 3.6l 3.6l a/t 5.7l A/t A11 A12 A13 A14 Audio amplifier (left side of trunk) B11 B12 Base Class 2 serial data Dash integration module (dim) (under right side of dash above right closeout/ insulator panel) Data link connector (under left side of dash) Digital radio receiver (left side of rear package shelf) Dim/aldl fuse 10a Driver door module (on left door, under door trim) Driver door switch assembly (ddsa) Driver's memory seat module (under driver's seat) E10 Electronic brake control module (ebcm) (at right front corner of engine compt) Engine control module (ecm) (3.6l: front of right valve cover) Except F14 Front passenger door module (on right front door, under door trim panel) H speed gmlan data bus + H speed gmlan data bus - Hot at all times Hvac control module (behind center of dash, below radio) If equipped Inflatable restraint sensing & diagnostic module (under center console) Instrument panel cluster (ipc) Key word 2000 serial data Left headlamp Left rear door module (under door trim panel) Luxury Powertrain control module Radio Radio antenna module (above headliner, near rear window) Rear integration module (rim) (under package shelf trim panel) Right headlamp Right rear door module (on right rear door, under door trim panel) S114 S119 S154 (in engine harness, approxi- mately 18 cm from tcm connector) S200 S201 Sp200 (in right front of passenger compt, under dash, above steering column) Sp300 (in passenger comp, near left side of driver's seat) Sp303 (in passenger compt, near right rear fuse block) Theft deterrent control module (at top of steering column) Transmission control module (tcm) (at right front of engine compt) Tv antenna module U2k/u2l U2y/u2x Underhood fuse block (right front of engine compt) Vehicle communication interface module (vcim) (in rear compt, behind right strut tower) W/ automatic headlamps control leveling system
COOLING FAN Cooling Fan Wiring Diagram for Cadillac CTS V 2004 List of elements for Cooling Fan Wiring Diagram for Cadillac CTS V 2004: 69 (in engine harness under throttle body, 11.5 cm towards the right) (3.6l) s148 (left rear side of engine) g100 (near left front strut tower) g101 (on right body rail, near right headlamp) g104 (or 470) 3.2l 3.2l 3.6l 5.7l After boil coolant pump (on right side of engine block) After boil fuse 10a After boil relay (3.2l) Computer data lines system Coolant bypass valve solenoid Coolant level sw Coolant level switch (in left front corner of coolant surge tank) E10 E11 Ect sensor signal Engine control module (ecm) (3.6l front of right valve cover) Engine coolant low level Engine coolant temperature (ect) sensor (3.2l rear of intake manifold) (3.6l side of left cylinder head) (5.7l front of left cylinder head) Except 5.7l Hi fan fuse 30a Hi speed fan relay High speed fan relay ctrl Hot at all times Hot in on or start Htr vlv/cltch fuse 10a Hvac control module (behind center of dash, below radio) Left cooling fan (left side of radiator) Lo speed fan relay Logic Low fan fuse 30a Low reference Low speed fan relay ctrl Main relay Main relay ctrl Message center Pnk Powertrain control module (pcm) R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R39 R40 R41 R42 R47 R48 R49 R50 Radio Relay control Right cooling fan (right side of radiator) Right rear fuse block (below right rear seat) S/p fan relay S111 (3.2l) (in engine harness, 26 cm from starter motor connector) Serial data Tan Underhood fuse block (right front of engine compartment)
CRUISE CONTROL
3.2L VIN N 3.2L VIN N, Cruise Control Wiring Diagram for Cadillac CTS V 2004 List of elements for 3.2L VIN N, Cruise Control Wiring Diagram for Cadillac CTS V 2004: 58 left rear side of engine) g100 (right front corner of engine compt) sp102 3.2l 3.6l 3.6l 5 volt reference Bpp sensor signal Brake pedal position sensor (near top of brake pedal) C12 C13 Class 2 serial data Clutch pedal position (cpp) sensor (m/t) Computer data lines system Cpp switch signal Cruise control switch Cruise control switch signal Cruise indicator Electronic brake control module (ebcm) (at right front corner of engine compartment) Engine control module (ecm) (front of right valve cover) Extended travel brake sw sig G104 (on right body rail, near right headlamp) Hot at all times Hot in run or start Htr vlv/ cltch fuse 10a Ign 1 relay Ignition Instrument panel cluster (ipc) Logic Low reference Main relay Off Pnk R/a R43 R44 R45 R46 R48 R49 S132 S207 Sp102 (right front corner of engine compt) Sp200 (in right front of passenger compartment, under dash, above steering column) Strg ctls fuse 10a Tac motor control-1 Tac motor control-2 Tan Tcm/ ipc fuse 15a Throttle actuator control (tac) motor Throttle body assembly Throttle position (tp) sensor Tos fuse 10a Tp sensor 1 signal Tp sensor 2 signal Turn signal/ multi-function switch Underhood fuse block (right front of engine compt) Vehicle speed sensor (vss) (m/t) (on right rear of transmission) Vehicle speed sensor signal
3.6L VIN 7 3.6L VIN 7, Cruise Control Wiring Diagram for Cadillac CTS V 2004 List of elements for 3.6L VIN 7, Cruise Control Wiring Diagram for Cadillac CTS V 2004: 58 left rear side of engine) g100 (right front corner of engine compt) sp102 3.2l 3.6l 3.6l 5 volt reference Bpp sensor signal Brake pedal position sensor (near top of brake pedal) C12 C13 Class 2 serial data Clutch pedal position (cpp) sensor (m/t) Computer data lines system Cpp switch signal Cruise control switch Cruise control switch signal Cruise indicator Electronic brake control module (ebcm) (at right front corner of engine compartment) Engine control module (ecm) (front of right valve cover) Extended travel brake sw sig G104 (on right body rail, near right headlamp) Hot at all times Hot in run or start Htr vlv/ cltch fuse 10a Ign 1 relay Ignition Instrument panel cluster (ipc) Logic Low reference Main relay Off Pnk R/a R43 R44 R45 R46 R48 R49 S132 S207 Sp102 (right front corner of engine compt) Sp200 (in right front of passenger compartment, under dash, above steering column) Strg ctls fuse 10a Tac motor control-1 Tac motor control-2 Tan Tcm/ ipc fuse 15a Throttle actuator control (tac) motor Throttle body assembly Throttle position (tp) sensor Tos fuse 10a Tp sensor 1 signal Tp sensor 2 signal Turn signal/ multi-function switch Underhood fuse block (right front of engine compt) Vehicle speed sensor (vss) (m/t) (on right rear of transmission) Vehicle speed sensor signal
5.7L VIN P 5.7L VIN P, Cruise Control Wiring Diagram for Cadillac CTS V 2004 List of elements for 5.7L VIN P, Cruise Control Wiring Diagram for Cadillac CTS V 2004: 64 (rear of right cylinder head) g142 5 volt reference 5v ref Anti-lock brakes system Bpp sensor signal Brake pedal position sensor (near top of brake pedal) C12 C13 C208 Class 2 serial data Clutch pedal position (cpp) sensor Coast Computer data lines system Cpp switch signal Cruise control switch fuse 2a Cruise indicator Cruise switch Electronic brake control module (ebcm) (at right front corner of engine compartment) Extended travel brake sw sig G104 (on right body rail, near right headlamp) Ground Hot at all times Hot in run or start Htr vlv/ cltch fuse 10a Ign 1 relay Ignition Ignition 1 voltage Inflatable restraint steering wheel module coil (below inflatable restraint steering wheel module) Instrument panel cluster (ipc) Logic Low erf Low ref Low reference On sw sig Pnk Powertrain control module (pcm) R43 R44 R45 R46 Resume/ accel Resume/acc sw sig Right steering wheel controls S207 Set Set/coast sw sig Sp200 (in right front of passenger compartment, under dash, above steering column) Steering column fuse block (taped to steering column harness) Steering wheel control switch fuse 2a Strg ctls fuse 10a Tac motor ctrl-1 Tac motor ctrl-2 Tcm/ ipc fuse 15a Throttle actuator control (tac) module (right front of engine compt) Throttle actuator control (tac) motor (right front of engine compt) Throttle position (tp) sensor (right side of throttle body) Tp sens 1 sig Tp sens 2 sig Tp sensor 1 Tp sensor 2 Underhood fuse block (right front of engine compt) Vehicle speed sensor (vss) (on left rear of transmission) Vss high signal Vss low signal
DEFOGGERS Defoggers Wiring Diagram for Cadillac CTS V 2004 List of elements for Defoggers Wiring Diagram for Cadillac CTS V 2004: 27 (on right "c" pillar) g303 A12 Class 2 serial data Computer data lines system Driver door module (on left door, under door trim) Driver outside rearview mirror E10 Feed Front passenger door module (on right front door, under door trim panel) Heated mirror element Hot at all times Hot in run Hvac control module (behind center of dash, below radio) Logic Low reference Nca Passenger outside rearview mirror R10 Rear defog fuse 40a Rear defog relay Rear defogger indicator Rear defogger switch Rear integration module (under package shelf trim panel) Rear window defogger (on rear window glass) Relay control Right rear fuse block (below right rear seat) Rtn
ELECTRONIC POWER STEERING Electronic Power Steering Wiring Diagram for Cadillac CTS V 2004 List of elements for Electronic Power Steering Wiring Diagram for Cadillac CTS V 2004: 15 (on right frame rail, near abs module) g110 A13 A14 Abs fuse 10a Class 2 serial data Computer data lines system Electronic brake control module (ebcm) (at right front corner of engine compartment) Ground High effort control Hot in run or start Ignition Low effort control Pnk Right rear fuse block (below right rear seat) Variable effort steering actuator (on power steering rack assembly)
ENGINE PERFORMANCE
3.2L VIN N 3.2L VIN N, Engine Performance Wiring Diagram (1 of 3) for Cadillac CTS V 2004 List of elements for 3.2L VIN N, Engine Performance Wiring Diagram (1 of 3) for Cadillac CTS V 2004: 69 (in engine harness, 120 cm from ho2s 21) (in fuel injector harness, near c112) (left rear of intake plenum) intake manifold runner control solenoid (near ignition coils) +5v ref Case ground Ckp hi Ckp low Cmp sig Coil 1 ctrl Coil 2 ctrl Coil 3 ctrl Coil 4 ctrl Coil 5 ctrl Coil 6 ctrl Crankshaft position sensor Dk red/ Ect sens Elec- tronic ignition module (bank 2) Electronic ignition module (bank 1) Engine control module (front of right valve cover) Evap purge Fuel inj 1 Fuel inj 2 Fuel inj 4 Fuel inj 5 Fuel inj 6 Fuel injectors G100 (near starter motor) G107 Heated oxygen sensor bank 1 sensor 1 (on right exhaust pipe) Heated oxygen sensor bank 1 sensor 2 (on right catalytic converter) Heated oxygen sensor bank 2 sensor 1 (on left exhaust pipe) Heated oxygen sensor bank 2 sensor 2 (on left catalytic converter) Ho2s 1,1 htr Ho2s 1,1 low Ho2s 1,1 sig Ho2s 1,2 hi Ho2s 1,2 htr Ho2s 1,2 lo Ho2s 2,1 htr Ho2s 2,1 low Ho2s 2,1 sig Ho2s 2,2 hi Ho2s 2,2 lo Iat sig Inj 3 ctrl Intk out 1 Intk out 2 Knock sensor (bank 1) (right side of engine) Knock sensor (bank 2) (left side of engine) Ks1 sig Ks2 sig Lo ref Low ref Maf sig Mass airflow sensor (right side of air cleaner) Nca Oil pres sig Pnk S108 S111 Shld ground Tac mtr ctrl Tan Tan/red To spark plugs Tps sens 1 Tps sens 2 3.2L VIN N, Engine Performance Wiring Diagram (2 of 3) for Cadillac CTS V 2004 List of elements for 3.2L VIN N, Engine Performance Wiring Diagram (2 of 3) for Cadillac CTS V 2004: 46 (in front of underhood fuse box) Camshaft position sensor (left front of engine) Canister vent fuse 10a Ecm fuse 15a Ecm/tcm fuse 10a Engine coolant temperature sensor (top rear of intake manifold) Engine oil pressure sensor (aboe oil filter) Evap canister purge solenoid (right side of engine) Even inj/ coil fuse 15a Fuel pump relay Fuse a 15a G100 (near starter motor) G104 (near right head- lamp) G401 (rear of right shock tower) Hot at all times Hot in run or start Ign 1 relay Ign mod/ maf fuse 15a Intake manifold tuning valve solenoid (rear side of intake duct) Main relay Odd inj/ coil fuse 15a Pnk Post fuse 15a Pre 02/ cam fuse 15a R36 R37 R38 R40 R43 R44 R45 R46 R47 R48 R49 R50 Right rear fuse block (below right rear seat) S132 Sp102 Tan Tcm/ ipc fuse 15a Theft fuse 7.5a Throttle position sensor (top right front of engine) Tos fuse 10a Under- hood fuse block (left front of eng compt) Vehicle speed sensor (m/t) (near rear of transmission assembly) 3.2L VIN N, Engine Performance Wiring Diagram (3 of 3) for Cadillac CTS V 2004 List of elements for 3.2L VIN N, Engine Performance Wiring Diagram (3 of 3) for Cadillac CTS V 2004: 82 (engine harn, 160 cm from ecm ground) (in rear compt lid harn, 237 cm from c401) +5v ref 1786 (or 1035) 2000 ser dat A/c pres A/c rly ctrl A/c system A/t Acc Acc volt Accelerator pedal Anti-lock brakes system App 2 sig App sens1 Automatic transmission manual shift shaft switch assembly Bas rly ctrl Battery Charging system Class 2 data Computer data lines system Cooling fans system Cpp sw sig Crank Cruise control system Data bus Data link connector (under left side of dash) Del tor sig Eng spd sig Engine control module (front of right valve cover) Engine speed Evap canister vent solenoid (above rear differential) Evap ctrl Ext brk sig F lev sig Fuel lev sns Fuel level sensor Fuel pump/ sender assembly Fuel tank pressure sensor (in fuel tank) G100 (near starter motor) G401 (rear of right shock tower) Gen on sig Gen signal Gmlan data Hot at all times Ign 1 Ign 1 volt Ign voltage Ignition switch Instrument panel cluster Lan bus + Lan bus - Logic Low red Low ref M/t Main rly ctrl Malfunction indicator lamp Mil ctrl Off/ lock P/n sig Pnk Position sensor (above accelerator pedal) Req torq Res/accel Rly coil ctrl Rly ctrl Run S114 S400 Secondary fuel sender assembly Ser data Sound system Sp102 (in front of underhood fuse box) Start Starting system Tan Tnk pres sig Trac ctrl Transmission control module (right front side of engine compt) Vss Vss signal
3.6L VIN 7 3.6L VIN 7, Engine Performance Wiring Diagram (1 of 4) for Cadillac CTS V 2004 List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (1 of 4) for Cadillac CTS V 2004: 59 (engine harn, 20 cm from c1 conn of pcm) (inj harn, 10 cm from c121) (left rear of intake plenum) intake manifold runner control solenoid +5v +5v ref Baro sig Charging system Ckp hi Ckp sens lo Cmp sig Cmp sol ctrl Crankshaft position sensor Drain Ect sig Engine control module (front of right valve cover) Engine oil level/temperature sensor (in oil pan) Engine oil pressure sensor (in oil filter housing) Evap sol ctrl Fuel injectors G133 (right front of engine) Gen fdc sig Gen to sig Heated oxygen sensor bank 1 sensor 1 (on right exhaust pipe) Heated oxygen sensor bank 1 sensor 2 (on right catalytic converter) Heated oxygen sensor bank 2 sensor 1 (on left exhaust pipe) Heated oxygen sensor bank 2 sensor 2 (on left catalytic converter) Ho2s hi sig Ho2s lo ctrl Ho2s lo sig Ho2s pmp ct Ic 1 sig Ic 2 ctrl Ic 3 ctrl Ic 4 sig Ic 5 ctrl Ic 6 ctrl Imrc sol ctrl Inj 1 ctrl Inj 2 ctrl Inj 3 ctrl Inj 4 ctrl Inj 5 ctrl Inj 6 ctrl Knock sensor (bank 1) (right side of engine) Knock sensor (bank 2) (left side of engine) Ks 1 sig Ks 2 sig Low ref Nca Oil lev sig Oil pres sig Oil tmp sig Pnk S140 Tac mtr ctrl Tan Tan a Tp sig Tp2 sig 3.6L VIN 7, Engine Performance Wiring Diagram (2 of 4) for Cadillac CTS V 2004 List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (2 of 4) for Cadillac CTS V 2004: 54 (engine harn 24.5 cm from ect sensor) (engine harn, 15 cm from coil 1) (engine harn, 15 cm from coil 5) (left rear of eng) Canister vent fuse 10a Ecm fuse 15a Ecm/tcm fuse 10a Even inj/ coil fuse 15a Fuel pump relay Fuse a 15a G104 (near right head- lamp) G130 (rear of right cyl head) G131 G401 (rear of right shock tower) Hot at all times Hot in run or start Ign 1 relay Ign mod/ maf fuse 15a Ignition coil 1 (top right of engine) Ignition coil 2 (top left of engine) Ignition coil 3 (top right of engine) Ignition coil 4 (top left of engine) Ignition coil 5 (top right of engine) Ignition coil 6 (top left of engine) Main relay Nca Odd inj/ coil fuse 15a Pnk Post fuse 15a Pre 02/ cam fuse 15a R36 R37 R38 R40 R43 R44 R45 R46 R47 R48 R49 R50 Right rear fuse block (below right rear seat) S142 S144 S145 S146 S149 S150 Spark plug Tan Tcm/ ipc fuse 15a Theft fuse 7.5a Under- hood fuse block (left front of eng compt) 3.6L VIN 7, Engine Performance Wiring Diagram (3 of 4) for Cadillac CTS V 2004 List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (3 of 4) for Cadillac CTS V 2004: 20 (front of left cyl head) camshaft position actuator solenoid (exhaust bank 2) (front of left cyl head) camshaft position actuator solenoid (intake bank 2) (front of left cyl head) camshaft position sensor (exhaust bank 1) (front of left cyl head) camshaft position sensor (intake bank 2) (front of right cyl head) camshaft position actuator solenoid (exhaust bank 1) (front of right cyl head) camshaft position actuator solenoid (intake bank 1) (front of right cyl head) camshaft position sensor (exhaust bank 1) (front of right cyl head) camshaft position sensor (intake bank 1) +5v A/c refrigerant pressure sensor (near left front strut tower) Barometric pressure sensor (top rear of engine) Engine coolant temperature sensor (top rear of intake manifold) Evap canister purge solenoid (right side of engine) Low ref Mass airflow sensor (right side of air cleaner) Pnk S148 Signal Tan Throttle position sensor (top right front of engine) 3.6L VIN 7, Engine Performance Wiring Diagram (4 of 4) for Cadillac CTS V 2004 List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (4 of 4) for Cadillac CTS V 2004: 76 (front of right cyl head) (fuel tank harn, 40 cm from c420) +5v ref +5v ref a +5v ref c A/c ref pres A/c system Acc Acc volt Accelerator pedal Anti-lock brake system App sens 2 sig App sens sig Automatic transmission manual shift shaft switch assembly Battery + Brk sw sig Cc sw sig Class 2 data Clu rly ctrl Computer data lines system Cooling fans system Crank volt Cruise control system Delv torque sig Eng spd sig Engine control module (front of right valve cover) Engine speed Evap canister vent solenoid (above rear differential) Evap sol ctrl Fan rly ctrl Fuel lev sens Fuel lev sig Fuel level sensor Fuel pump/ sender assembly Fuel tank pressure sensor (in fuel tank) G132 G401 (rear of right shock tower) Gmlan bus Ho2s hi sig Ho2s lo ctrl Ho2s lo sig Hot at all times Iat sig Ign 1 volt Ignition switch Instrument panel cluster Lan bus + Lan bus - Logic Low ref Maf sig Main rly ctrl Malfunction indicator lamp Mil ctrl Off/ lock P/n sig Pnk Position sensor (above accelerator pedal) Req torq sig Rly coil ctrl Rly coil supp Rly ctrl Run S156 S400 Secondary fuel sender assembly Ser data bus Sound system Sp102 (in front of underhood fuse box) Start Starting system Tan Tank pres sig Tc data sig Transmission control module (right front side of engine compt) Vss
5.7L VIN P 5.7L VIN P, Engine Performance Wiring Diagram (1 of 4) for Cadillac CTS V 2004 List of elements for 5.7L VIN P, Engine Performance Wiring Diagram (1 of 4) for Cadillac CTS V 2004: 66 (center of eng, below intake manifold) (engine harn, 15.5 cm from c101) (engine harn, 20 cm from underhood fuse block breakout) (rear of left cyl head) +5v ref a +5v ref b 5v ref Acc voltage Anti-lock brake system Ckp sen b+ Ckp sen sig Cmp sen sig Computer data lines system Cooling fans system Cpp sw sig Ect sen sig Eng cool fan rly 1 ctrl Engine coolant temperature sensor (left side of of eng, below generator) Extended travel brake sw Fuel inj n04 ctrl Fuel inj n06 Fuel inj n07 ctrl Fuel inj no1 Fuel inj no2 ctrl Fuel inj no3 ctrl Fuel inj no5 ctrl Fuel inj no8 ctrl Fuel injectors G140 G141 (rear of left cylinder head) G142 (rear of right cylinder head) Ground Heated oxygen sensor, bank 1 sensor 1 (forward of catalytic converter) Heated oxygen sensor, bank 1 sensor 2 (rear of catalytic converter) Heated oxygen sensor, bank 2 sensor 1 (forward of catalytic converter) Heated oxygen sensor, bank 2 sensor 2 (rear of catalytic converter) Ho2s sig hi bank 1 sen1 Ho2s sig hi bank1 sen1 Ho2s sig hi bank2 sen1 Ho2s sig hi bank2 sen2 Ho2s sig lo bank1 sen1 Ho2s sig lo bank1 sen2 Ho2s sig lo bank2 sen1 Ho2s sig lo bank2 sen2 Knock sen sig 1 Knock sen sig 2 Knock sensor Low oil level sw sig Low ref Nca Pcm gnd Pnk Powertrain control module (behind right front fender) Request torque sig Rly coil ctrl S160 S161 S162 S169 S170 Serial data Skip shift sol ctrl Starting system Tan Tan a Uart serial data 5.7L VIN P, Engine Performance Wiring Diagram (2 of 4) for Cadillac CTS V 2004 List of elements for 5.7L VIN P, Engine Performance Wiring Diagram (2 of 4) for Cadillac CTS V 2004: 43 (rear compt lid harn, 237 cm from c401) (rear of right shock tower) g401 Canister vent fuse 10a Ecm/tcm fuse 10a Evaporative emission canister purge solenoid valve (top left side of eng, on intake manifold) Even inj/ coil fuse 15a Fuel level sensor Fuel pump motor fuse 20a r37 Fuel pump relay Fuel pump/ sender assembly G104 (near right head- lamp) G401 (rear of right shock tower) Hot at all times Hot in run or start Ign 1 relay Ign mod/ maf fuse 15a Main relay Manifold absolute pressure sensor (on top rear of intake manifold) Odd inj/ coil fuse 15a Pnk Post fuse 15a Pre 02/ cam fuse 15a R36 R38 R40 R43 R44 R45 R46 R47 R48 R49 R50 Right rear fuse block (below right rear seat) S400 Secondary fuel sender assembly Sp102 (right front corner of engine compt) Tan Tcm/ ipc fuse 15a Theft fuse 7.5a Tos fuse 10a Transmission fluid temperature sensor (in transmission) Under- hood fuse block (left front of eng compt) 5.7L VIN P, Engine Performance Wiring Diagram (3 of 4) for Cadillac CTS V 2004 List of elements for 5.7L VIN P, Engine Performance Wiring Diagram (3 of 4) for Cadillac CTS V 2004: 51 (attached to pcm below battery) throttle actuator control module (ign coil module, on left valve cover) (lower right side of eng) crankshaft position sensor (on left side of throttle body) throttle actuator control motor (on left side of transmission) reverse lockout solenoid (on right side of throttle body) throttle position sensor (on top of accelerator pedal, part of mounting bracket) accelerator pedal position sensor (rear of right cylinder head) (top center rear of eng) camshaft position sensor (under vehicle, on left side of transmission) skip shift solenoid +5v ref 5v ref A/c refrigerant pressure sensor (near left front strut tower) Anti-lock brake system App no1 sig App no2 sig App no3 sig Bas rly supp Cruise control system Engine oil level/temper- ature sensor (in oil pan) Engine oil pressure sensor (on top center rear of eng) G141 (rear of left cylinder head) G142 G142 (rear of right cylinder head) Gnd Ign Ign 1 Ignition coil/module 1 (top of cylinder) Ignition coil/module 3 (top of cylinder) Ignition coil/module 5 (top of cylinder) Ignition coil/module 7 (top of cylinder) Low ref On/off sig Plug spark Pnk Red Red c ign ctrl Ref lo Res/acc sig S163 S165 S167 Set/coast sig Spark plug Tac ctrl no1 Tac ctrl no2 Tan Tan a Tps no1 sig Tps no2 sig Uart ser data 5.7L VIN P, Engine Performance Wiring Diagram (4 of 4) for Cadillac CTS V 2004 List of elements for 5.7L VIN P, Engine Performance Wiring Diagram (4 of 4) for Cadillac CTS V 2004: 82 (ign coil module, on left valve cover) (inside right rear wheelhouse panel) evaporative emission canister vent solenoid valve (on air intake assembly) mass air flow sensor (on right of differential) vehicle speed sensor +12v ref A gnd A tan A/c clutch rly ctrl A/c refrig press sen sig A/c system Acc Alt term l Anti-lock brake system B ref lo Charging system Cooling fans system Crank voltage D ign D pnk Eng oil press sen sig Eng speed (tach) out sig Engine speed Evap can purge sol ctrl Evap can vent valve ctrl Fuel level sen sig Fuel levl sen sig (second) Fuel pump rly ctrl Fuel tank press sen sig Fuel tank pressure sensor (in right fuel tank) G140 (rear of left cyl head) G142 (rear of right cylinder head) Gen field duty sig Ground Hi spd fan rly ctrl Ho2s htr low ctrl Hot at all times Iat sen sig Ign ctrl 1 Ign ctrl 2 Ign ctrl 3 Ign ctrl 4 Ign ctrl 5 Ign ctrl 6 Ign ctrl 7 Ign ctrl 8 Ignition coil/ module 2 (top of cylinder) Ignition coil/ module 4 (top of cylinder) Ignition coil/ module 6 (top of cylinder) Ignition coil/ module 8 (top of cylinder) Ignition switch Instrument panel cluster Logic Low ref Maf sen sig Main rly ctrl Malfunction indicator lamp Map sen sig Mil ctrl Off/ lock Oil temp Plug spark Pnk Powertrain control module (behind right front fender) Red Reverse inhibit sol ctrl Run S164 S166 S168 Sound system Spark plug Ss ind Ss lamp ctrl Start Starting system Tan Tft sen sig Torque delivered Vehicle speed out Vss Vss ref lo Vss sig hi
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Cadillac CTS V 2004 List of elements for Back-up Lamps Wiring Diagram for Cadillac CTS V 2004: 36 (left rear side of engine) (3.2l) g100 (left rear side of engine) g100 (rear of left cylinder head) (5.7l) g142 (rear of left rear shock tower) g402 3.2l 3.6l A12 Automatic transmission Backup lamp switch (m/t) Backup sw sig Bus + Bus - Computer data lines system G132 (front of right cylinder head) Hot at all times Inside rearview mirror (isrvm) Left backup lamp Left rear fuse block (below left rear seat) License lamp assembly R36 R37 R38 R40 Rear integration module (under package shelf trim panel) Relay control Rev lamp relay Reverse lamp fuse 10a Right backup lamp S155 S401 Serial data Sig a Sig b Sig c Transmission control module (tcm) (a/t) (at right front of engine compt) Transmission internal mode switch (ims) Exterior Lamps Wiring Diagram (1 of 2) for Cadillac CTS V 2004 List of elements for Exterior Lamps Wiring Diagram (1 of 2) for Cadillac CTS V 2004: 73 (40 cm from c421) s402 (behind the left kick panel) g200 (not used) 5v ref A11 A12 Auto Bas rly Battery Bpp sig Brake pedal position (bpp) sensor (near top of brake pedal) C12 C13 Center high mounted stop lamp (chmsl) Class 2 serial data Computer data lines system Dash integration module (under right side of dash, above right closeout/ insulator panel) Dimming fuse 10a Drl low control Drl low ctrl Electronic brake control module (ebcm) (at right front corner of engine compartment) Flasher fuse 15a G104 (on right body rail, near right headlamp) G200 (behind the left kick panel) G402 (rear of left rear shock tower) Ground Hazard request sig Hazard sw sig Hazard sw signal Hazard switch Head Headlamps on sig Hot at all times Hot in run or start Ign 1 relay Interior lights system Left front turn signal lamp Left front turn signal/ fog lamp assembly Left license lamp Left turn signal voltage Left turn sw sig License lamp assembly Low ref Off Park Park lamp relay Park lamp rly ctrl Park lamp sw on sig Pnk R31 R32 R33 R34 R43 R44 R45 R46 Right front turn signal lamp Right front turn signal/ fog lamp assembly Right license lamp Right turn signal voltage Right turn sw sig S200 S207 S208 S401 Sp102 (right front corner of engine compartment) Sp200 (in right front of passenger compt, under dash, above steering column) Strg ctls fuse 10a To underhood fuse block (lt park fuse, 10a) (diagram 2 of 2) Turn signal/ multi-function switch Turn signal/hazard flasher module Underhood fuse block (right front of engine compt) Exterior Lamps Wiring Diagram (2 of 2) for Cadillac CTS V 2004 List of elements for Exterior Lamps Wiring Diagram (2 of 2) for Cadillac CTS V 2004: 56 (behind the left kick panel) (below left rear seat) left rear fuse block (in body harness, 30 cm from c410) s415 (in body harness, 34 cm from c411) s416 (on right body rail, near right headlamp) g104 (rear of right rear shock tower) g401 (right front of engine compt) underhood fuse block Bas fuse 15a Bas relay Class 2 (dim) Class 2 serial data Computer data lines system E trailering (not used) From underhood fuse block (dimming fuse, 10a) (diagram 1 of 2) G200 G402 (rear of left rear shock tower) Ground Hot at all times Instrument panel cluster (ipc) Joint connector Left front marker lamp Left front park lamp Left headlamp (w/o automatic headlamps control leveling system) Left rear marker lamp Left rear turn signal lamp Left tail lamp Left tail lamp assembly Left tail/ stop lamp Left turn indicator Lights on ind Logic Lt park fuse 10a Message center Message request Radio Right front marker lamp Right front park lamp Right headlamp (w/o automatic headlamps control leveling system) Right rear marker lamp Right rear turn signal lamp Right tail lamp Right tail lamp assembly Right tail/ stop lamp Right turn indicator Rt park fuse 10a S116 (in forward lamp harness, 40 cm from right cooling fan connector) S201 S24 S25 S26 S27 S405 S406 Turn signal on theft attempted W/ hid W/o hid
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 5) for Cadillac CTS V 2004 List of elements for Ground Distribution Wiring Diagram (1 of 5) for Cadillac CTS V 2004: 43 (3.2l left rear of engine) g107 (3.2l, 3.6l): right side of engine compartment) (5.7l): on inner fender wall, near battery) g105 (3.6l: back of right cylinder head) (5.7l: on engine block, near generator) (3.2l: on engine block, near starter) g102 (in cellular antenna coax cable, about 31 cm from g304) s309 (on right (on right frame rail, near abs module) g110 (on the rear package shelf, left of subwoofer) g304 (under center console) g306 A/c compressor clutch A/t After boil coolant pump Automatic transmission B12 Back-up switch Battery Brake fluid level switch Cellular antenna Coolant bypass valve solenoid Coolant level switch Dash integration module (dim) Electronic brake control module (ebcm) Engine control module (ecm) G100 (3.2l: left rear side of engine) G101 (near left front strut tower) Headlamp washer fluid pump If equipped Ignition coil bank 1 Ignition coil bank 2 Inflatable restraint sensing & diagnostic module (sdm) Left heated washer nozzle M/t Nca Rear window defogger Right heated washer nozzle Transmission control module (tcm) Vehicle communication interface module (vcim) Vehicle speed sensor (vss) W/ high pressure headlamp washer W/o high pressure headlamp washer Washer fluid level switch Windshield washer fluid pump Windshield wiper/ washer module ``c" pillar) g303 Ground Distribution Wiring Diagram (2 of 5) for Cadillac CTS V 2004 List of elements for Ground Distribution Wiring Diagram (2 of 5) for Cadillac CTS V 2004: 43 (right front of engine compartment) underhood fuse block (w/ hid) left headlamp (w/ hid) right headlamp A/t Accessory relay Auxiliary cooling fan Auxiliary power outlet B12 Blower motor control processor Cigar lighter Electronic prndl From c312) Front headlamp leveling sensor Front passenger door module (fpdm) G104 (on right body rail, near right headlamp) G201 (behind right kick panel) Hood ajar switch Horn assembly Hvac control module Ign 1 relay Left cooling fan Left front fog lamp Left front marker lamp Left front turn signal lamp Left front turn signal/ fog lamp assembly Left headlamp M/t R16 R35 R46 Right front fog lamp Right front marker lamp Right front turn signal lamp Right front turn signal/ fog lamp assembly Right headlamp Right rear door module (rrdm) S/p fan relay S202 (in the i/p harness, 48 cm from hazard switch connector) Trailer provisions W/ automatic headlamps control leveling system W/ hid W/o automatic headlamps control leveling system W/o hid Ground Distribution Wiring Diagram (3 of 5) for Cadillac CTS V 2004 List of elements for Ground Distribution Wiring Diagram (3 of 5) for Cadillac CTS V 2004: 38 (w/ 8-way adjuster power passenger seat) passenger seat adjuster switch (w/ front heater seat) front passenger heated seat module B12 Dash integration module (dim) Data link connector (dlc) Driver door module (ddm) Driver heated seat module Driver seat adjuster switch Front passenger heated seat module G200 (behind left kick panel) G307 (on floor, left of driver's seat) Hazard switch Ignition key alarm switch Inflatable restraint steering wheel module coil Instrument panel cluster (ipc) Left rear door module (lrdm) Left steering wheel controls Memory seat module (msm) Passenger lumbar adjuster switch Passenger seat adjuster switch Right steering wheel controls S200 (in the i/p harness, 11.5 cm from sp200) S201 (in the i/p harness, 54 cm from hazard switch connector) S205 (in steering column harness, 12.7 cm from c202) S208 (in steering column harness, 12.7 cm from c202) S305 (in body harness, 18 cm from left rear fuse block) S350 (in driver seat harness, 8 cm from msm connector) Theft deterrent control module Traction control switch Turn signal/ hazard flasher module Turn signal/ multi-function switch W/ 8-way adjuster power passenger seat W/ 8-way adjuster power passenger seat, front heater seat W/ front heater seat W/ memory seat W/ power lumbar control seat W/o memory seat W/o power lumbar control seat Ground Distribution Wiring Diagram (4 of 5) for Cadillac CTS V 2004 List of elements for Ground Distribution Wiring Diagram (4 of 5) for Cadillac CTS V 2004: 59 (below right rear seat) right rear fuse block (if equipped) (if equipped) digital radio receiver (w/ navigation) traffic information receiver (w/ navigation) tv antenna module Audio amplifier B11 Bas relay Center high mounted stop lamp (chmsl) Coil Courtesy lamps Driver sunshade Fuel pump & sender assembly Fuel pump relay G401 (rear of right rear shock tower) G402 (rear of left rear shock tower) Ign 1 relay Ign 3 relay Inside rearview mirror (isrvm) Left backup lamp Left license lamp Left rear fog lamp Left rear fuse block (below left rear seat) Left rear marker lamp Left rear tail lamp Left rear tail/ stop lamp Left rear turn signal lamp Left tail lamp assembly Left vanity lamps License lamp assembly Nca Overhead console Passenger sunshade R21 R25 R36 Radio Rear compartment lid release actuator Rear headlamp leveling sensor Rear integration module (rim) Right backup lamp Right license lamp Right rear fog lamp Right rear marker lamp Right rear tail lamp Right rear tail/stop lamp Right rear turn signal lamp Right tail lamp assembly Right vanity lamps S401 (in license lamp harness, 40 cm from c421) S405 (in left tail lamp harness, 12.7 cm from c410) S406 (in right tail lamp harness, 12.7 cm from c411) Sunroof control switch Sunroof module Sunshade) Theft deterrent alarm Vehicle communication interface module (vcim) W/ electric sliding sun roof glass W/o electric sliding sun roof glass Ground Distribution Wiring Diagram (5 of 5) for Cadillac CTS V 2004 List of elements for Ground Distribution Wiring Diagram (5 of 5) for Cadillac CTS V 2004: 40 A/c compressor clutch Automatic transmission Backup lamp switch Engine control module (ecm) Engine oil level/ temperature sensor G130 (3.6l) (rear of right cylinder head) G131 (3.6l) (left rear of engine) G132 (3.6l) (front of right cylinder head) G133 (3.6l) (right front of engine) G140 (5.7l) (rear of left cylinder head) G141 (5.7l) (rear of left cylinder head) G142 (5.7l) (rear of right cylinder head) Ignition coil 1 Ignition coil 2 Ignition coil 3 Ignition coil 4 Ignition coil 5 Ignition coil 6 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 Mass air flow (maf) sensor Nca Powertraiin control module (pcm) Powertrain control module (pcm) S143 (in engine harness, 15 cm from g130) S144 (in engine harness, 20 cm from g130) S149 (in engine harness, 15 cm from coil 4) S150 (in engine harness, 15 cm from coil 4) S155 (in engine harness, approximately 17.5 cm from c101) S160 (in engine harness, approximately 8 cm from ect connector) S167 (in ignition coil/module harness, on left valve cover, 5 cm from c131) S168 (in ignition coil/module harness, on right valve cover, 5 cm from c132) Throttle actuator control (tac) module Transmission control module (tcm)
HEADLIGHTS Headlights Wiring Diagram (1 of 2) for Cadillac CTS V 2004 List of elements for Headlights Wiring Diagram (1 of 2) for Cadillac CTS V 2004: 61 (behind the left kick panel) g200 (in right front of passenger compt, under dash, above steering column) sp200 (in steering wheel control harness, 15.2 cm from c208) (m/t) s210 6 spd m/t A11 A12 Ambient light sens sig Auto B c2 Class 2 (dim) Class 2 serial data Coil sply volt ctrl Computer data lines system Dash integration module (under right side of dash, above right closeout/insulator panel) E10 F11 F12 F13 F15 Flash to pass signal Flash to pass switch signal Fog lamp fuse 15a Fog lamp relay Fog lamp rly ctrl Front fog lamp ind Front fog lamp switch Ft fog lamp sw sig G104 (on right body rail, near right headlamp) Head Headlamp on signal Headlamp relay control Hi beam rly ctrl High beam ind Hot at all times Hot in run or start Hvac control module (behind center of dash, below radio) Instrument panel cluster (ipc) J c4 K c1 Left front fog lamp Left front turn signal/ fog lamp assembly Lo beam rly control Logic Low Low reference Lt sunload sens sig M/t Nca Off Others Park Park lamp sw on sig Right front fog lamp Right front turn signal/ fog lamp assembly Rt sunload sens sig S201 S208 Sentinel display Sunload sensor (top center of i/p, on defrost grill) Turn signal/ multifunction switch Underhood fuse block (right front of engine compartment) Headlights Wiring Diagram (2 of 2) for Cadillac CTS V 2004 List of elements for Headlights Wiring Diagram (2 of 2) for Cadillac CTS V 2004: 24 (on right body rail, near right headlamp) g104 Hi beam relay High beam Hot at all times Left headlamp Low beam Low beam/hid relay Lt hi beam fuse 10a Lt low beam fuse 20a Nca R23 R24 R25 R26 R27 R28 R29 R30 Right headlamp Rt hi beam fuse 10a Rt low beam fuse 20a Underhood fuse block (right front of engine compartment) W/ high intensity discharge headlamps W/o high intensity discharge headlamps
HORN Horn Wiring Diagram for Cadillac CTS V 2004 List of elements for Horn Wiring Diagram for Cadillac CTS V 2004: 24 (on right body rail, near right headlamp) g104 C202 C208 Dash integration module (under right side of dash, above right closeout/insulator panel) Early production Fuse block (steering column) (taped to steering column harness) High note horn Horn assembly Horn fuse 15a Horn relay Horn relay ctrl Horn switch Horn switch fuse 2a Hot at all times Inflatable restraint steering wheel module (center of steering wheel) Inflatable restraint steering wheel module coil (below inflatable restraint steering wheel module) Late production Low note horn R10 R11 R12 R13 Tan Underhood fuse block (right front of engine compartment)
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram (1 of 2) for Cadillac CTS V 2004 List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Cadillac CTS V 2004: 83 (5.7l) left driver information center (dic) (not used) 5.7l Abs indicator Anti-lock brakes system Backlighting Backlighting ctrl Battery (+) Brake fluid level switch (on brake fluid reservoir) Break indicator Charge indicator Class 2 Class 2 (dim) Class 2 (ebcm) Class 2 (ecm) Class 2 (rim) Class 2 (sdm) Computer data lines system Cruise indicator Ecm/tcm fuse 10a Elec prndl fuse 10a Electronic prndl Eng speed sig Engine controls system Engine coolant temperature indicator Exterior lights system Fasten safety belt indicator Front fog lamps indicator Fuel level G101 (near left front strut tower) G200 (behind the left kick panel) G201 (behind right kick panel) Gnd Ground Ground ground steering wheel ctrl sig serial data High beam indicator Hot at all times Hot in acc or run Hot in run or start Ignition 1 voltage Instrument panel cluster (ipc) Led dimming sig Left turn indicator Level sens sig Lights on indicator Logic Low engine oil pressure ind Low tire pressure indicator Malfunction ind lamp (mil) Oil temp sens sig Park brake sw sig Park brake switch (on park brake assembly) Pnk Rear fog lamps indicator Right driver information center (dic) (5.7l) Right turn indicator S201 Security indicator Serial data Sir indicator Skip shift ind Speedometer Speedometer control Sport mode indicator Tachometer Tachometer control Tcm/ipc fuse 15a Temperature Traction control off indicator Transmission range sw sig a Transmission range sw sig b Transmission range sw sig c Transmission range sw sig p Transmissions system Trip reset sw sig Trip reset switch Trip/ odometer Trip/odometer ctrl Underhood fuse block (right front of engine compt) Vehicle speed sig Voltage Wait to start indicator (not used) Winter mode indicator Instrument Cluster Wiring Diagram (2 of 2) for Cadillac CTS V 2004 List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Cadillac CTS V 2004: 58 (in engine harness, 20 cm from pcm) s140 (in fuel tank harness, 40 cm from c420) (left side of fuel tank) 3.2l 3.6l 5 volt reference 5.7l Back C12 Clear dic sig Clr Computer data lines system Dic back sig Engine control module (ecm) (front of right valve cover) Engine controls system Engine oil level/ temperature sensor (3.6l) (in oil pan) Engine oil level/ temperature sensor (5.7l) Engine oil pressure (eop) sensor (3.2l) (on front right side of engine) Engine oil pressure (eop) sensor (3.6l) (in oil filter housing) Engine oil pressure (eop) sensor (5.7l) Engine speed sig Except 5.7l Fuel level sens sig Fuel level sensor Fuel pump & sensor assembly (in fuel tank) G142 (rear of right cylinder head) Ground Inflatable restraint steering wheel module coil (below inflatable restraint steering wheel module) Info Information dn sw sig Information up sw sig Left steering wheel controls Logic Low reference Message center Message request Oil level sw sig Oil pressure sens sig Oil pressure sw sig Oil temp sens sig Powertrain control module (pcm) (5.7l) Radio S148 (in engine harness under throttle body, 11.5 cm towards the right) S156 (approximately 24 cm from ebcm connector) S400 Scroll dic sig Secondary fuel sender assembly Serial data Steering wheel control assembly Switch 1 Switch 2 Switch 3 Switch 4 Tan Tune/sel U2v, u2x, u2y Vehicle speed sig Vehicle speed signal
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram (1 of 2) for Cadillac CTS V 2004 List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Cadillac CTS V 2004: 36 (under door trim panel) 5v reference A11 A12 B10 C2 g Class 2 serial data Computer data lines system Courtesy lamp switch Courtesy lps on signal Dash integration module (under right side of dash, above right closeout/ insulator panel) Dim/ aldl fuse 10a Dimmer sw low reference Driver door latch assembly Driver door module (on left door, under door trim) Driver door open sw sig Front passenger door latch assembly Front passenger door module (on right front door, under door trim panel) Front passenger door sw sig G402 (rear of left rear shock tower) Ground Hot at all times I/p lamps dimmer switch Instrument illumination circuit Left courtesy/reading lamp Left rear door latch assembly Left rear door module Left rear door open sw sig Overhead console Right courtesy/reading lamp Right rear door latch assembly Right rear door module (on right rear door, under door trim panel) Right rear door open sw sig S314 Tan Underhood fuse block (right front of engine compartment) Courtesy Lamps Wiring Diagram (2 of 2) for Cadillac CTS V 2004 List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Cadillac CTS V 2004: 42 (center of rear compartment lid) rear compartment lid release actuator (in headliner harness, 39.5 cm from c305) s312 (in headliner harness, 69.5 cm from c305) s319 A10 A12 B10 B12 Class 2 serial data Computer data lines system Courtesy lamp ctrl Courtesy lp ctrl Courtesy lp relay ctrl Courtesy lp voltage Driver sunshade Driver vanity lamps Fd1 Fd2 G402 (rear of left rear shock tower) Hot at all times Int lamp relay Interior lamp fuse 10a Joint connector Left footwell courtesy lamp Left front door courtesy lamp Lid ajar sw signal Nca Passenger sunshade Passenger vanity lamps R16 R17 R18 R20 Rear compartment courtesy lamp Rear dome lamp Rear integration module (under package shelf trim panel) Right footwell courtesy lamp Right front door courtesy lamp Right rear fuse block (below right rear seat) S10 S11 S314 Trunk diode Instrument Illumination Wiring Diagram (1 of 2) for Cadillac CTS V 2004 List of elements for Instrument Illumination Wiring Diagram (1 of 2) for Cadillac CTS V 2004: 63 (in the i/p harness, 47 cm from hazard switch connector) s203 5 volt reference A11 A12 Auto head B12 Backlight lamps ctrl Backlights lamp ctrl Battery C2 b3 Class 2 serial data Computer data lines system Control power output Dash integration module (under right side of dash, above right closeout/insulator panel) Dim/ aldl fuse 10a Dimmer switch signal Dimming fuse 10a Driver door lock switch Driver door module (on left door, under door trim) Driver door switch assembly (ddsa) Driver dr mod fuse 10a Electronic prndl (a/t) G200 (behind the left kick panel) G201 (behind right kick panel) G402 (rear of left rear shock tower) Ground Hot at all times I/p dimmer switch Illumination lamp Inc dim Instrument panel cluster (ipc) Joint connector Led dimming signal Left rear fuse block (below left rear seat) Low reference Memory/ personalization function switch Off Overhead console Park Park lamp relay Park lamp sw on sig Park lp rly ctrl Psgr dr mod fuse 10a R31 R32 R33 R34 Rear compartment lid release switch Rear dr mod fuse 15a Right rear fuse block (below right rear seat) S12 S13 S14 S208 S308 S314 S321 (in headliner harness, 32.5 cm from dome lamp) S501 (in left front door trim harness, 24 cm from driver door lock switch) S502 (in left front door trim harness, 14.5 cm from ddsa) Serial data Sunroof control switch Turn signal/ multi-function switch Underhood fuse block (right front of engine compartment) Instrument Illumination Wiring Diagram (2 of 2) for Cadillac CTS V 2004 List of elements for Instrument Illumination Wiring Diagram (2 of 2) for Cadillac CTS V 2004: 30 (in right front door trim harness, 24.5 cm from door lock switch) s601 3.2l/3.6l 5.7l A12 B12 Backlight lamps ctrl Battery Computer data lines system Dimming fuse 2a Front passenger door lock switch Front passenger door module (on right front door, under door trim panel) Front passenger window switch Fuse block (steering column) (taped to steering column harness) G200 (behind the left kick panel) G201 (behind right kick panel) Ground Hazard switch Illumi- nation lamp Inflatable restraint steering wheel module coil (below inflatable restraint steering wheel module) Left rear door module (under door trim panel) Left rear window switch Left steering wheel controls Right rear door module (on right rear door, under door trim panel) Right rear window switch Right steering wheel controls S200 S208 S602 (in right front door trim harness, 8.5 cm from window switch) S701 Serial data
MEMORY SYSTEMS Memory Mirrors Wiring Diagram (1 of 2) for Cadillac CTS V 2004 List of elements for Memory Mirrors Wiring Diagram (1 of 2) for Cadillac CTS V 2004: 48 5v feed 5v reference 5v rtn A12 B11 B12 Backlight lamps control Battery Class 2 serial data Computer data lines system Driver door module (on left door, under door trim) Driver door switch assembly (ddsa) Driver dr mod fuse 10a Driver outside rearview mirror Exit (ext) G200 (behind the left kick panel) Gnd Ground Ground rtn Horiz motor Horiz pos sensor Horiz posit sensor Hot at all times Interior lights system Left Left horiz Left rear fuse block (below left rear seat) Logic Low reference Memory 1 switch signal Memory 2 switch signal Memory/personalization function switch Mirror mtr down ctrl Mirror mtr left ctrl Mirror mtr right ctrl Mirror mtr up ctrl Nca Outside rearview mirror switch Right Right horiz S502 (in left front door trim harness, 14.5 cm from ddsa) Sel left Sel right Vert down Vert motor Vert pos sensor Vert up Vertical posit sensor Memory Mirrors Wiring Diagram (2 of 2) for Cadillac CTS V 2004 List of elements for Memory Mirrors Wiring Diagram (2 of 2) for Cadillac CTS V 2004: 32 5v feed 5v reference 5v rtn A12 B12 Battery Class 2 serial data Computer data lines system Dr mod pwr circuit breaker 30a Front passenger door module (on right front door, under door trim panel) G201 (behind right kick panel) Ground Horiz motor Horiz pos sensor Horizontal posit sensor Hot at all times Left horiz Low reference Mirror mtr down ctrl Mirror mtr left ctrl Mirror mtr right ctrl Mirror mtr up ctrl Passenger outside rearview mirror Psgr dr mod fuse 10a Right horiz Right rear fuse block (below right rear seat) S303 Vert down Vert motor Vert pos sensor Vert up Vertical posit sensor Memory Seat Wiring Diagram (1 of 2) for Cadillac CTS V 2004 List of elements for Memory Seat Wiring Diagram (1 of 2) for Cadillac CTS V 2004: 61 5 volt reference Battery positive voltage Class 2 serial data Dr lumbar horiz posit sens signal Driver seat adjuster switch E10 E11 E12 E13 E14 E15 E16 F10 F11 F12 F13 F14 F15 F16 c2 Front vertical down Front vertical motor down control Front vertical motor up control Front vertical up G307 (on floor, left of driver's seat) Ground Horizontal forward Horizontal forward switch signal Horizontal motor forward ctrl Horizontal motor rearward control Horizontal rearward Horizontal rearward switch signal Hot at all times Left rear fuse block (below left rear seat) Low reference Lumbar forward switch signal Lumbar rearward switch signal Lumber motor forward control Lumber motor rearward control Mem/adapt seat fuse 10a Memory seat module (msm) (under driver's seat) Pnk Rear vertical down Rear vertical motor down control Rear vertical motor up control Rear vertical posit sens signal Rear vertical up Recline back switch signal Recline forward Recline forward switch signal Recline motor forward control Recline motor rearward control Recline posit sens signal Recline rearward S350 (w/ heated seats) S351 Seat circuit breaker 30a Seat horiz posit sensor signal Tan Vertical down switch signal Vertical posit sens signal Vertical up switch signal Memory Seat Wiring Diagram (2 of 2) for Cadillac CTS V 2004 List of elements for Memory Seat Wiring Diagram (2 of 2) for Cadillac CTS V 2004: 33 (in driver seat harness, 10 cm from seat horizontal position sensor) s348 (in left seat harness, 15 cm from driver seat rear vertical position sensor) s349 Backlight lamps control Class 2 serial data Driver door module (on left door, under door trim) Driver door switch assembly (ddsa) Driver lumbar adjuster switch Driver lumbar horizontal motor assembly Driver seat front vertical motor Driver seat front vertical position sensor Driver seat horizontal motor Driver seat horizontal position sensor Driver seat rear vertical motor Driver seat rear vertical position sensor Driver seat recline motor Driver seat recline position sensor Exit (ext) Forward Gnd Ground Interior lights system Memory 1 sw signal Memory 1 switch signal Memory 2 sw signal Memory 2 switch signal Memory/personalization function switch Nca Not used Pnk Rearward S502 (in left front door trim harness, 14.5 cm from ddsa) Sp300 (in passenger compartment, near left side of driver's seat) Tan
NAVIGATION Navigation Wiring Diagram for Cadillac CTS V 2004 List of elements for Navigation Wiring Diagram for Cadillac CTS V 2004: 35 (coaxial cable) (or 1782) (or 655) (or bare) Audio amplifier (left side of trunk) Audio fuse 10a Bare Battery Class 2 serial data Computer data lines system Drain wire G402 (rear of left rear shock tower) Gps signal Ground Hot at all times Infotainment system Inside rearview mirror (isrvm) Joint connector Left rear fuse block (under left rear seat) Mic out feed Mic out return Nav voice in (+) Nav voice out (-) Navigation antenna Navigation voice low ref Navigation voice signal Pnk Radio S18 Sig Vehicle communication interface module (vcim) (in rear compartment, behind right strut tower) Vehicle communication system Voice output (+) Voice output (-) Voice output ground
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 7) for Cadillac CTS V 2004 List of elements for Power Distribution Wiring Diagram (1 of 7) for Cadillac CTS V 2004: 80 (3.2l) (3.6l) (except 3.2l) (in engine harness, 15 cm from coil 1) s145 (in fuel injector harness, 15 cm from c121) s151 (in fuel injector harness, near c112) s108 (in ignition coil/module harness, on left valve cover, 5 cm from c131) s163 (in the engine harness, 45 cm from the underhood fuse block) s132 (not used) (right front of engine compartment) underhood fuse block 3.2l 3.6l 5.7l A/t Battery Blower fuse 40a Blower relay C1 g C2 a12 Ccp fuse 10a Dash integration module (dim) Data link connector (dlc) Dim/ aldl fuse 10a Ecm fuse 15a Ecm/tcm fuse 10a Engine control module (ecm) Evaporative emission (evap) canister purge solenoid valve Evaporative emissions (evap) canister purge solenoid valve Except 5.7l Flasher fuse 15a Fuel injector Fusible link Generator Heated oxygen sensor (ho2s) bank 1 sensor 2 Heated oxygen sensor (ho2s) bank 2 sensor 2 Hi fan fuse 30a Hi speed fan relay Hvac control module Ignition coil 1 Ignition coil 3 Ignition coil 5 Ignition coil/ module 1 Ignition coil/ module 3 Ignition coil/ module 5 Ignition coil/ module 7 Ignition manifold runner control (imrc) solenoid Instrument panel cluster (ipc) Intake manifold tuning valve (imtv) solenoid Left rear fuse block (below left rear seat) Low fan fuse 30a Low speed fan relay Main relay Mass air flow (maf) sensor Odd inj/ coil fuse 15a Post 2 fuse 15a Powertrain control module (pcm) Pusher fan relay R14 R19 R20 R39 R40 R47 R48 R49 R50 R51 R52 S/p fan relay Spare fuse Starter Theft deterrent control module To underhood fuse block (horn relay) (diagram 2 of 7) To underhood fuse block (pre 2/cam fuse, 15a) (diagram 3 of 7) Tos fuse 10a Trailer provisions Transmission control module (tcm) Turn signal/ hazard flasher module Vehicle speed sensor (vss) (manual transmission) Volt check fuse 10a Power Distribution Wiring Diagram (2 of 7) for Cadillac CTS V 2004 List of elements for Power Distribution Wiring Diagram (2 of 7) for Cadillac CTS V 2004: 56 (3.2l) (3.6l) (in engine harness, approximately 8 cm from ebcm connector) s130 (right front of engine compartment) underhood fuse block 5.7l Abs fuse 50a Accessory relay Comp clutch fuse 10a Comp clutch relay Drl relay Elec prndl fuse 10a Electronic brake control module (ebcm) Electronic prndl (a/t) Engine control module (ecm) Except 5.7l Fog lamp fuse 15a Fog lamp relay From ignition switch (pin 2) (diagram 4 of 7) From underhood fuse block a (main relay) (diagram 1 of 7) G104 (on right body rail, near right headlamp) Hdlp wash circuit breaker 30a Hdlp washer relay High beam relay Horn fuse 15a Horn relay Ign sw fuse 10a L rear fuse 60a Low beam/ hid relay Park lamp relay Powertrain control module (pcm) R rear fuse 60a R10 R11 R24 R28 R32 R35 R36 R37 R38 R56 R68 Spare fuse Theft deterrent control module Theft fuse 7.5a To ignition switch (pin 6) (diagram 4 of 7) To left rear fuse block (driver dr mod fuse, 10a) (diagram 5 of 7) To left rear fuse block (pusher fan fuse, 30a) (diagram 5 of 7) To right rear fuse block (dr mod pwr circuit breaker, 30a) (diagram 6 of 7) To right rear fuse block (rim/ign sw fuse, 10a) (diagram 4 of 7) To underhood fuse block (i/p out let fuse, 20a) (diagram 3 of 7) Transmission control module (tcm) (a/t) Windshield wiper/ washer module Windshield wiper/ washer switch Wpr mod fuse 30a Wpr sw fuse 10a Power Distribution Wiring Diagram (3 of 7) for Cadillac CTS V 2004 List of elements for Power Distribution Wiring Diagram (3 of 7) for Cadillac CTS V 2004: 89 (3.2l) (3.6l) (a/t) (accessory relay) (diagram 2 of 7) (in body harness, 22 cm from a/c pressure switch connector) (in engine harness, 15 cm from coil 5) s142 (in engine harness, 24.5 cm from ect sensor) s146 (in engine harness, approximately 20 cm from underhood fuse block) s162 (in fuel injector harness, 15 cm from c121) s152 (in ignition coil/module harness, on right valve cover, 5 cm from c132) s164 (on right body rail, near right headlamp) g104 (right front of engine compartment) underhood fuse block 3.2l 3.6l 5.7l A/t A8 c2 Auxiliary power outlet B+ mode Battery saver mode Camshaft actuator solenoid exhaust bank 1 Camshaft actuator solenoid exhaust bank 2 Camshaft actuator solenoid intake bank 1 Camshaft actuator solenoid intake bank 2 Camshaft position (cmp) sensor Cigar lighter Cigar relay Clutch pedal position (cpp) sensor Cmp clu relay Coolant bypass valve solenoid Dash integration module (dim) Engine control module (ecm) Evaporative emission (evap) canister purge solenoid valve Even inj/ coil fuse 15a Except 3.6l Except 5.7l Fog lamp relay From ignition switch (via splice pack sp200) (pin 8) (diagram 4 of 7) From underhood fuse block b (ecm fuse, 15a) (diagram 1 of 7) From underhood fuse block h Fuel injector 2 Fuel injector 4 Fuel injector 6 Fuel injector 8 G201 (behind right kick panel) Heated oxygen sensor (ho2s) bank 1 sensor 1 Heated oxygen sensor (ho2s) bank 2 sensor 1 Htr vlv/ cltch fuse 10a I/p outlet fuse 20a Ign 1 relay Ignition coil 2 Ignition coil 4 Ignition coil 6 Ignition coil/ module 2 Ignition coil/ module 4 Ignition coil/ module 6 Ignition coil/ module 8 Instrument panel cluster (ipc) Intake manifold runner control (imrc) solenoid M/t Outlet fuse 30a Pnk Pnk a Pnk/ (in engine harness, 15.5 cm from c101) s170 Powertrain control module (pcm) Pre o2/ cam fuse 15a R43 R44 R45 R46 R55 R59 R60 R61 R62 R63 R64 Reverse lockout solenoid S131 S202 S308 Skip shift solenoid Splice pack sp200 Starter fuse 30a Starter relay Tcm/ipc fuse 15a Throttle actuator control (tac) module To underhood fuse block (wash noz fuse, 10a) (diagram 4 of 7) Transmission control module (tcm) Power Distribution Wiring Diagram (4 of 7) for Cadillac CTS V 2004 List of elements for Power Distribution Wiring Diagram (4 of 7) for Cadillac CTS V 2004: 53 (3.2l) (3.6l) (in steering column harness, 12.7 cm from c202) s207 3.2l 3.2l & 3.6l 3.6l 5.7l A11 Acc Accessory Cruise control switch Cruise control switch fuse 2a Dash integration module (dim) Engine control module (ecm) Except 5.7l From underhood fuse block (ign sw fuse, 10a) (diagram 2 of 7) From underhood fuse block (r rear fuse, 60a) (connector c3, pin 1) (diagram 2 of 7) From underhood fuse block (tcc/et fuse, 10a) (diagram 3 of 7) Ign mod/maf fuse 15a Ignition 1 Ignition coil bank 1 (3.2l) Ignition coil bank 2 Ignition lock cylinder control actuator Ignition switch Inflatable restraint steering wheel module coil Left headlamp Left heated washer nozzle Mass air flow (maf) sensor Off/lock Pnk Powertrain control module (pcm) Rear integration module (rim) Right headlamp Right heated washer nozzle Right rear fuse block (below right rear seat) Right steering wheel controls Rim/ ign sw fuse 10a Run S200 (in the i/p harness, 11.5 cm from sp200) Spare fuse Splice pack sp200 Start Steering column fuse block (taped to steering column harness) Strg ctls fuse 10a To left rear fuse block (ign 3 relay) (diagram 6 of 7) To right rear fuse block (ign 1 relay) (diagram 7 of 7) To underhood fuse block (accessory relay) (connector c4, pin 37) (diagram 2 of 7) To underhood fuse block (cmp clu relay) (diagram 3 of 7) Turn signal switch Turn signal/ multifunction switch Underhood fuse block (right front of engine compartment) W/ automatic headlamps control leveling system Wash noz fuse 10a Power Distribution Wiring Diagram (5 of 7) for Cadillac CTS V 2004 List of elements for Power Distribution Wiring Diagram (5 of 7) for Cadillac CTS V 2004: 54 (below left rear seat) left rear fuse block (in driver seat harness, 8 cm from msm connector) s351 (in headliner harness, 22.5 cm from radio antenna module) s313 A12 Amp fuse 30a Audio amplifier Audio fuse 10a Bas fuse 15a Bas relay Digital radio receiver Driver adjuster seat switch Driver door module (ddm) Driver dr mod fuse 10a Driver heated seat module Driver lumbar adjuster switch F11 From underhood fuse block (l rear fuse, 60a) (connector c2, pin 1) (diagram 2 of 7) From underhood fuse block (l rear fuse, 60a) (connector c2, pin 2) (diagram 2 of 7) Garage door opener Joint connector L frt htd seat mod fuse 10a Left rear door module (lrdm) Left rear fuse block (ign 3 relay) (diagram 6 of 7) Mem/adapt seat fuse 10a Memory seat module (msm) Pusher fan fuse 30a Pusher fan relay (trailer provisions) R31 R32 R36 R37 Radio Radio antenna module Rear dr mod fuse 15a Rev lamp relay Reverse lamp fuse 10a Right rear door module (rrdm) S12 S13 S14 S15 S17 S18 S19 S20 S21 S22 S23 Spare fuse Trk dr rel sol relay Trunk dr release fuse 10a Vehicle communication interface module (vcim) W/ 7 speaker system W/o 7 speaker system Power Distribution Wiring Diagram (6 of 7) for Cadillac CTS V 2004 List of elements for Power Distribution Wiring Diagram (6 of 7) for Cadillac CTS V 2004: 67 (below right rear seat) right rear fuse block (except 5.7l) (5.7l) (in body harness, 108 cm from c700) s304 (in body harness, 108 cm from c800) s303 (in i/p harness, 11.5 cm from sp200) s200 (in passenger seat harness, 12.7 cm from c307) s352 A/t shift lock control solenoid assembly A/t shift shift lock control solenoid A11 After boil fuse 10a After boil relay Canister vent fuse 10a Ccp fuse 10a Dr mod pwr circuit breaker 30a Driver door module (ddm) Driver heated seat module Driver seat adjuster switch Evaporative emissions (evap) canister vent solenoid valve From ignition switch (pin 5) (diagram 4 of 7) From left rear fuse block (trk dr release fuse, 10a) (diagram 5 of 7) From underhood fuse block (r rear fuse, 60a) (connector c3, pin 2) (diagram 2 of 7) Front headlamp leveling sensor Front passenger door module (fpdm) Front passenger heated seat module Fuel pump motor relay Fuel pump mtr fuse 15a 20a G402 (rear of left rear shock tower) Hdlp leveling fuse 10a Hvac control module Ign 3 fuse 10a Ign 3 relay Ignition lock cylinder control actuator Ignition switch Joint connector Left rear door module (lrdm) Left rear fuse block (below left rear seat) Memory seat module (msm) Passenger lumbar adjuster switch Passenger seat adjuster switch R frt htd seat mod fuse 10a R11 R12 R21 R22 R23 R25 R37 Rap relay Rear defog relay Rear headlamp leveling sensor Rear integration module Rear integration module (rim) Recirculation actuator Right rear door module (rrdm) Right rear fuse block (below right rear seat) Rim/ign sw fuse 10a Seat circuit breaker 30a Spare fuse Sunroof module Tan Underhood fuse block (right front of engine compt) W/ memory W/ power lumbar control seats W/ power seats W/o memory W/o power lumbar control seats W/o power seats Power Distribution Wiring Diagram (7 of 7) for Cadillac CTS V 2004 List of elements for Power Distribution Wiring Diagram (7 of 7) for Cadillac CTS V 2004: 35 A12 Abs fuse 10a Air bag fuse 10a Electronic brake control module (ebcm) From ignition switch (via splice pack sp200, pin 9) (diagram 4 of 7) From right rear fuse block (rim/ign sw fuse, 10a) (diagram 4 of 7) Front passenger door module (fpdm) G401 (rear of right rear shock tower) Ign 1 relay Inflatable restraint sensing & diagnostic module (sdm) Inside rear view mirror Int lamp relay Interior lamp fuse 10a Joint connector Pnk Psgr dr mod fuse 10a R16 R17 R21 R22 R23 R25 R31 R32 Rear defog fuse 40a Rear defog relay Rear fog lamp fuse 10a Rear fog lamp relay Rear integration module (rim) Right rear fuse block (below right rear seat) Rim fuse 10a S20 S21 S22 S23
POWER DOOR LOCKS Power Door Locks Wiring Diagram (1 of 2) for Cadillac CTS V 2004 List of elements for Power Door Locks Wiring Diagram (1 of 2) for Cadillac CTS V 2004: 56 (behind left kick panel) g200 (behind right kick panel) g201 A12 B10 B11 B12 Backlight lamps ctrl Battery Class 2 serial data Computer data lines system Door ajar signal Door ajar sw signal Door ajar switch signal Door key sw unlock sig Door key unlock switch signal Door lock mtr lock ctrl Door lock mtr unlk ctrl Door lock sw lock sig Door lock sw unlock sig Door lock switch signal Door open signal Door open switch signal Dr mod pwr circuit breaker 30a Driver door latch assembly Driver door module (on left door, under door trim) Driver door switch assembly (ddsa) Driver dr key sw signal Driver dr mod fuse 10a Front passenger door latch assembly Front passenger door module (on right front door, under door trim panel) Gnd Ground Hot at all times Interior lights system Joint connector Keyless entry antenna signal Left front door sw sig Left rear fuse block (below left rear seat) Memory seat switch Psgr dr mod fuse 10a Radio antenna module (above headliner, near rear window) Rear compartment lid release switch Rear dr mod fuse 15a Rear glass antenna Rfa grid Right rear fuse block (below right rear seat) S12 S13 S14 S20 S22 S303 S313 S502 (in left front door trim harness, 14.5 cm from ddsa) Tan Trunk dr release fuse 10a Power Door Locks Wiring Diagram (2 of 2) for Cadillac CTS V 2004 List of elements for Power Door Locks Wiring Diagram (2 of 2) for Cadillac CTS V 2004: 33 (behind left kick panel) g200 (behind right kick panel) g201 A12 Ajar B10 B12 Backlight lamp ctrl Backlight lamps control Backlight lamps ctrl Battery Class 2 serial data Computer data lines system Door act lock ctrl Door ajar switch signal Door lock act lock ctrl Door lock act unlk ctrl Door lock unlock ctrl Door open switch signal Driver door lock switch Front passenger door lock switch Front passenger window switch Ground Interior lights system Left rear door latch assembly Left rear door module (under door trim panel) Lock Open Right rear door latch assembly Right rear door module (on right rear door, under door trim panel) S602 (in right front door trim harness, 8.5 cm from window switch) S701 Tan Unlock
POWER MIRRORS Automatic Day/Night Mirror Wiring Diagram for Cadillac CTS V 2004 List of elements for Automatic Day/Night Mirror Wiring Diagram for Cadillac CTS V 2004: 38 (or bare) (rear of left rear shock tower) g402 A12 Backup lamp voltage Bare Base Class 2 serial data Computer data lines system Drain wire Exterior lights system Ground Hot at all times Hot in run or start Ignition voltage Inside rearview mirror (isrvm) Joint connector Key pad sig Led signal Left rear fuse block (below left rear seat) Luxury Microphone Microphone low ref Microphone sig Pnk Pnk s21 R36 R37 R38 R40 Radio Rear integration module (under package shelf trim panel) Rev lamp fuse 10a Rev lamp relay Reverse lamp ctrl Right rear fuse block (below right rear seat) Rim fuse 10a S23 Vehicle communication interface module (vcim) (in rear compt, behind right strut tower) Power Mirrors Wiring Diagram for Cadillac CTS V 2004 List of elements for Power Mirrors Wiring Diagram for Cadillac CTS V 2004: 41 A12 B11 B12 Battery Class 2 serial data Computer data lines system Down Dr mod pwr circuit breaker 30a Driver door module (on left door, under door trim) Driver door switch assembly (ddsa) Driver dr mod fuse 10a Driver outside rearview mirror Front passenger door module (on right front door, under door trim panel) G200 (behind the left kick panel) G201 (behind right kick panel) Ground Ground rtn Horiz motor Hot at all times Interior lights system Left Left mirror mtr-down Left mirror mtr-left Left mirror mtr-right Left mirror mtr-up Left rear fuse block (below left rear seat) Logic Outside rearview mirror switch Passenger outside rearview mirror Psgr dr mod fuse 10a Right Right mirror motor-up Right mirror mtr -down Right mirror mtr-left Right mirror mtr-right Right rear fuse block (below right rear seat) S303 S502 (in left front door trim harness, 14.5 cm from ddsa) Sel left Sel right Vert motor
POWER SEATS Heated Seats Wiring Diagram for Cadillac CTS V 2004 List of elements for Heated Seats Wiring Diagram for Cadillac CTS V 2004: 53 (on floor, left of driver's seat) g307 A11 A12 B12 Battery Class 2 serial data Computer data lines system Dash integration module (dim) (under right side of dash, above right closeout/insulator panel) Driver heated seat Driver heated seat status Driver heated seat switch Driver high/low signal Driver seat back heated seat element Driver seat front cushion heated seat element Driver seat rear cushion heated seat element Driver's heated seat module (under driver's seat) E10 Front passenger heated seat Front passenger seat back heated seat element Front passenger seat cushion front heated seat element Front passenger seat cushion rear heated seat element Ground Heated seat element control Heated seat element voltage Heated seat high/low signal Heated seat module status sig Heated seat module status signal Heated seat sensor low ref Heated seat temp sens signal Hot at all times Hot in run Hvac control module (behind center of dash, below radio) Ign 3 fuse 10a Ignition 3 voltage Joint connector Left rear fuse block (below left rear seat) Logic Lt frt htd seat mod fuse 10a Passenger heated seat status Passenger heated seat switch Passenger high/low signal Passenger's heated seat module (under passenger's seat) Pnk R frt htd seat mod fuse 10a Radio Rear integration module (under package shelf trim panel) Right rear fuse block (below right rear seat) S305 (w/o power lumbar) S320 (w/ power lumbar) S350 Seat temp sensor low ref Seat temp sensor signal Thermistor Passenger"s Lumbar Wiring Diagram for Cadillac CTS V 2004 List of elements for Passenger"s Lumbar Wiring Diagram for Cadillac CTS V 2004: 10 Forward G307 (on floor, left of driver's seat) Hot at all times Left rear fuse block (below left rear seat) Passenger lumbar adjuster switch Passenger lumbar horizontal motor Rearward S320 S352 Seat circuit breaker 30a Power Seats Wiring Diagram for Cadillac CTS V 2004 List of elements for Power Seats Wiring Diagram for Cadillac CTS V 2004: 33 (on floor, left of driver's seat) g307 Aft Battery Down Driver seat adjuster switch Driver seat front vertical motor Driver seat horizontal motor Driver seat rear vertical motor Driver seat recline motor Front vertical down Front vertical up Fwd Gnd Horizontal forward Horizontal rearward Hot at all times Left rear fuse block (below left rear seat) Passenger seat adjuster switch Passenger seat front vertical motor Passenger seat horizontal motor Passenger seat rear vertical motor Passenger seat recline motor Rear vertical down Rear vertical up Recline forward Recline rearward S304 (w/ passenger power seats) S305 (w/o power lumbar) S320 (w/ power lumbar) S350 (w/ heated seats) S352 (w/ power lumbar) Seat circuit breaker 30a Tan
POWER TOP/SUNROOF Sunroof Wiring Diagram for Cadillac CTS V 2004 List of elements for Sunroof Wiring Diagram for Cadillac CTS V 2004: 42 (in sunroof harness, 9 cm from sunroof module) Close G401 (rear of right rear shock tower) Ground Hall effect sensor 1 Hall effect sensor 2 Hot at all times Illumination + Illumination - Interior lights system Limit switch Nca Open Pnk Rap relay Rap relay coil ctrl Rear integration module (under package shelf trim panel) Right rear fuse block (below right rear seat) S318 Solid state (close) Solid state (open) Sunroof control switch Sunroof limit switch low reference Sunroof limit switch stop signal Sunroof mod fuse 30a Sunroof module Sunroof motor (at left front corner of sunroof module) Sunroof motor close control Sunroof motor open control Sunroof obstruction sensor 12 vref Sunroof obstruction sensor 2 signal Sunroof obstruction sensor signal Sunroof switch low reference Sunroof switch-data 1 Sunroof switch-data 2 Sunroof switch-data 3 Sunroof switch-data 4 Sunroof switch-data 5 Sunroof switch-data 6 Sunroof switch-low reference Tan Vehicle speed signal
POWER WINDOWS Power Windows Wiring Diagram (1 of 2) for Cadillac CTS V 2004 List of elements for Power Windows Wiring Diagram (1 of 2) for Cadillac CTS V 2004: 39 A12 B11 B12 Battery Battery positive voltage Class 2 serial data Computer data lines system Door locks system Down control Down sig Dr mod pwr c/b circuit breaker 30a Driver door module (on left door, under door trim) Driver dr mod fuse 10a Driver window motor Express signal Front passenger door module (on right front door, under door trim panel) Front passenger window motor Front passenger window switch G200 (behind the left kick panel) G201 (behind right kick panel) Ground High speed serial data Hot at all times Interior lights system Joint connector Left rear fuse block (below left rear seat) Low reference Low speed serial data Pnk Psgr dr mod fuse 10a Rear dr mod fuse 15a Right rear fuse block (below right rear seat) S12 S13 S14 S303 S602 (in right front door trim harness, 8.5 cm from window switch) Up control Up signal Power Windows Wiring Diagram (2 of 2) for Cadillac CTS V 2004 List of elements for Power Windows Wiring Diagram (2 of 2) for Cadillac CTS V 2004: 37 (on right rear door, under door trim panel) right rear door module A12 B12 Backlights lamps ctrl Battery Class 2 serial data Computer data lines system Door locks system Down control Down signal Driver door switch assembly (ddsa) Drv window down sig Drv window express sig Drv window up sig Express signal Front passenger down sig Front passenger express sig Front passenger up sig G200 (behind the left kick panel) G201 (behind right kick panel) Ground Left rear door module (under door trim panel) Left rear window motor Left rear window switch Logic Lr window down sig Lr window express sig Lr window up sig Right rear window motor Right rear window switch Rr window down sig Rr window express sig Rr window up sig S701 Up control Up signal Window lock out
RADIO Radio Wiring Diagram, Base (1 of 2) for Cadillac CTS V 2004 List of elements for Radio Wiring Diagram, Base (1 of 2) for Cadillac CTS V 2004: 58 (dd8) inside rearview mirror (or 1782) (or 655) (or bare) (rear of left rear shock tower) g402 (right rear package shelf) (w/o gps) navigation antenna Am/fm antenna signal Amp fuse 30a Antenna signal Audio fuse 10a Bare Battery Cellular microphone signal Class 2 serial data Coaxial cable Coil 1 Coil 2 Computer data lines system Drain Drain wire Fm composite signal Gps sig Ground Hot at all times Info down switch signal Information up sw signal Instrument cluster system Joint connector Keyless entry/tire pressure antenna signal Left a pillar speaker (tweeter) Left audio signal (+) Left audio signal (-) Left front door speaker (midrange) Left rear fuse block (below left rear seat) Modern ground (not used) Modern receive (not used) Modern transmit (not used) Pnk Radio Radio antenna module (above headliner, near rear window) Radio front glass antenna Radio rear glass antenna Rear speaker (subwoofer) Red Remote radio ctrl voltage Return voice in signal Rfa rear window antenna Right audio signal (+) Right audio signal (-) S18 S22 S313 Steering wheel ctrls sig Tan U2y/u26 Uav Vehicle speed signal Voice in signal Radio Wiring Diagram, Base (2 of 2) for Cadillac CTS V 2004 List of elements for Radio Wiring Diagram, Base (2 of 2) for Cadillac CTS V 2004: 70 (midrange) left rear door speaker (midrange) right front door speaker (midrange) right rear door speaker (rear of left rear shock tower) g402 (tweeter) right a pillar speaker A10 A11 Audio amplifier (left side of trunk) B10 B11 B12 Bare Battery C12 C202 c1 Cellular telephone voice low ref Cellular telephone voice signal Class 2 serial data Computer data lines system Drain wire Fuse block (steering column) (early production) (taped to steering column harness) G200 (behind the left kick panel) Ground Inflatable restraint steering wheel module coil (below inflatable restraint steering wheel module) Interior lights system Left fnt low level audio sig (+) Left fnt low level audio sig (-) Left front midrange spkr out (+) Left front midrange spkr out (-) Left front tweeter spkr out (+) Left front tweeter spkr out (-) Left rear midrange spkr out (+) Left rear midrange spkr out (-) Left steering wheels controls Left subwoofer spkr out (+) Left subwoofer spkr out (-) Low ref Mic out Mic out rtn Mic out shield Modern ground (not used) Modern receiver (not used) Modern trasmid (not used) (not used) Nca Pnk Rdt1 Rdt2 Right fnt low level audio sig (+) Right fnt low level audio sig (-) Right fnt midrange spkr out (+) Right fnt midrange spkr out (-) Right front tweeter spkr out (+) Right front tweeter spkr out (-) Right rear midrange spkr out (+) Right rear midrange spkr out (-) Right steering wheels controls Right subwoofer spkr out (+) Right subwoofer spkr out (-) S208 Steering wheel control assembly (3.2l/3.6l) Steering wheel control switch fuse 2a Sw1 ent Sw2 back Sw3 Sw4 Sw5 Sw6 Tan Vehicle communication interface module (vcim) (in rear compartment, behind right strut tower) Voice signal Radio Wiring Diagram, Luxury (1 of 2) for Cadillac CTS V 2004 List of elements for Radio Wiring Diagram, Luxury (1 of 2) for Cadillac CTS V 2004: 70 (dd8) inside rearview mirror (or 1782) (or 655) (rear of left rear shock tower) g402 (right rear package shelf) (w/o gps) navigation antenna 10a Am/fm antenna signal Amp fuse 30a Antenna signal Audio common Audio fuse 10a Bare Battery Cellular microphone signal Class 2 serial data Coaxial cable Computer data lines system Digital radio antenna (center rear of roof) Digital radio receiver (u2k/u2l) (left side of rear package shelf) Drain Drain wire Fm composite signal Gps sig Ground Hot at all times Info down switch signal Information up sw signal Instrument cluster system Joint connector Keyless entry/tire pressure antenna signal Left audio signal (+) Left audio signal (-) Left rear fuse block (below left rear seat) Modern ground (not used) Modern receive (not used) Modern transmit (not used) Nca Noise compensation microphone (in overhead console) Pnk Radio Radio antenna module (above headliner, near rear window) Radio front glass antenna Radio rear glass antenna Red Remote radio ctrl voltage Return voice in signal Rfa rear window antenna Right a pillar speaker (tweeter) Right audio signal (+) Right audio signal (-) Right front door speaker S18 S19 S22 S313 Satellite antenna Satellite antenna signal Steering wheel ctrls sig Tan Terrestrial antenna Terrestrial antenna signal Trunk dr release fuse U2y/u26 Uav Uav/u2x/ u2y Vehicle speed signal Voice in signal Voice output (+) Voice output (-) Voice output ground Radio Wiring Diagram, Luxury (2 of 2) for Cadillac CTS V 2004 List of elements for Radio Wiring Diagram, Luxury (2 of 2) for Cadillac CTS V 2004: 70 (in passenger compartment, near left side of driver's seat) sp300 (midrange) left rear door speaker (rear of left rear shock tower) g402 (subwoofer) rear speaker A10 A11 A12 Audio amplifier (left side of trunk) B10 B11 B12 Bare Battery C1 c202 C12 Cellular telephone voice low ref Cellular telephone voice signal Class 2 serial data Computer data lines system Drain wire Front center speaker out (+) Front center speaker out (-) Front speaker (center) Fuse block (steering column) (early production) (taped to steering column harness) G200 (behind the left kick panel) Ground Inflatable restraint steering wheel module coil (below inflatable restraint steering wheel module) Interior lights system Left a pillar speaker (tweeter) Left front door speaker (tweeter) Left front low level signal (+) Left front low level signal (-) Left front tweeter spkr out (+) Left front tweeter spkr out (-) Left rear midrange spkr out (+) Left rear midrange spkr out (-) Left steering wheels controls Low ref Mic out Mic out rtn Modern ground (not used) Modern receiver (not used) Modern tranmid (not used) Navigation voice in (+) Navigation voice out (-) Noise compensation micro voltage Pnk Rdt1 Rdt2 Right front low level signal (+) Right front low level signal (-) Right front tweeter spkr out (+) Right front tweeter spkr out (-) Right rear door speaker Right rear midrange spkr out (-) Right steering wheels controls S208 Steering wheel control assembly (3.2l/3.6l) Steering wheel control sw fuse 2a Subwoofer spkr out (+) Subwoofer spkr out (-) Sw1 ent Sw2 back Sw3 Sw4 Sw5 Sw6 Tan Vehicle communication interface module (vcim) (in rear compartment, behind right strut tower) Voice signal
SHIFT INTERLOCK Ignition Lock Solenoid Wiring Diagram for Cadillac CTS V 2004 List of elements for Ignition Lock Solenoid Wiring Diagram for Cadillac CTS V 2004: 14 A/t shift lock control solenoid assembly (in center console) A11 A12 Class 2 serial data Computer data lines system Dash integration module (under right side of dash, above right closeout/insulator panel) Hot at all times Ignition lock cyl ctrl Ignition lock cylinder control actuator (on steering column) Ignition lock cylinder control switch Right rear fuse block (below right rear seat) Rim/ign sw fuse 10a S200 Tan Shift Interlock Wiring Diagram for Cadillac CTS V 2004 List of elements for Shift Interlock Wiring Diagram for Cadillac CTS V 2004: 18 A/t shift lock control solenoid A/t shift lock control solenoid assembly (in center console) A12 B12 Class 2 serial data Computer data lines system G402 (rear of left rear shock tower) Hot at all times Hot in run Ign 3 fuse 10a Ign 3 relay Joint connector Left rear fuse block (below left rear seat) R21 R22 R25 Rear integration module (under package shelf trim panel) Shift lock solenoid control
STARTING/CHARGING
3.2L VIN N 3.2L VIN N, Charging Wiring Diagram for Cadillac CTS V 2004 List of elements for 3.2L VIN N, Charging Wiring Diagram for Cadillac CTS V 2004: 22 (3.2l: on engine block, near starter) (3.6l: back of right cylinder head) g102 (right side of engine compt) g105 3.2l 3.6l 3.6l 3.2l Battery Battery charge indicator Class 2 Class 2 serial data Computer data lines system Engine control module (ecm) (front of right valve cover) Fusible link Gen f term Gen l term Generator Ground distribution system Instrument panel cluster (ipc) Logic Power distribution system Red Serial data class 2 Starter 3.2L VIN N, Starting Wiring Diagram for Cadillac CTS V 2004 List of elements for 3.2L VIN N, Starting Wiring Diagram for Cadillac CTS V 2004: 45 (3.2l: on engine block, near starter) (3.6l: back of right cylinder head) g102 (on right body rail, near right headlamp) g104 (right side of engine compt) g105 3.2l 3.6l A/t Acc Battery Charging circuit Clutch pedal position switch (m/t) (on clutch pedal bracket) Computer data lines system Cooling fans system Cpp switch signal Crank voltage Engine control module (ecm) (3.6l (vin 7): fronr of right valve cover) Ground distribution system Hot at all times Hot in run or start Htr vlv/ cltch fuse 10a Ign 1 relay Ignition switch Lock M/t Off Pnk R43 R44 R45 R46 R63 R64 R65 R66 Red Run S131 (in body harness, 22 cm from a/c pressure switch connector) Serial data Splice pack sp200 (in right front of passenger compartment, under dash, above steering column) Start Starter Starter fuse 30a Starter relay Starter relay coil ctrl Starter relay coil voltage Underhood fuse block (right front of engine compartment)
3.6L VIN 7 3.6L VIN 7, Charging Wiring Diagram for Cadillac CTS V 2004 List of elements for 3.6L VIN 7, Charging Wiring Diagram for Cadillac CTS V 2004: 22 (3.2l: on engine block, near starter) (3.6l: back of right cylinder head) g102 (right side of engine compt) g105 3.2l 3.6l 3.6l 3.2l Battery Battery charge indicator Class 2 Class 2 serial data Computer data lines system Engine control module (ecm) (front of right valve cover) Fusible link Gen f term Gen l term Generator Ground distribution system Instrument panel cluster (ipc) Logic Power distribution system Red Serial data class 2 Starter 3.6L VIN 7, Starting Wiring Diagram for Cadillac CTS V 2004 List of elements for 3.6L VIN 7, Starting Wiring Diagram for Cadillac CTS V 2004: 45 (3.2l: on engine block, near starter) (3.6l: back of right cylinder head) g102 (on right body rail, near right headlamp) g104 (right side of engine compt) g105 3.2l 3.6l A/t Acc Battery Charging circuit Clutch pedal position switch (m/t) (on clutch pedal bracket) Computer data lines system Cooling fans system Cpp switch signal Crank voltage Engine control module (ecm) (3.6l (vin 7): fronr of right valve cover) Ground distribution system Hot at all times Hot in run or start Htr vlv/ cltch fuse 10a Ign 1 relay Ignition switch Lock M/t Off Pnk R43 R44 R45 R46 R63 R64 R65 R66 Red Run S131 (in body harness, 22 cm from a/c pressure switch connector) Serial data Splice pack sp200 (in right front of passenger compartment, under dash, above steering column) Start Starter Starter fuse 30a Starter relay Starter relay coil ctrl Starter relay coil voltage Underhood fuse block (right front of engine compartment)
5.7L VIN P 5.7L VIN P, Charging Wiring Diagram for Cadillac CTS V 2004 List of elements for 5.7L VIN P, Charging Wiring Diagram for Cadillac CTS V 2004: 20 (on engine block, near generator) (on inner fender wall, near battery) g105 Battery Charge indicator Class 2 Class 2 serial data Computer data lines system Fusible link G102 Gen duty cycle sig Gen turn on sig Generator Ground distribution system Ign b+ Instrument panel cluster (ipc) Logic Power distribution system Powertrain control module (pcm) Serial data class 2 Starter (lower right side of engine) 5.7L VIN P, Starting Wiring Diagram for Cadillac CTS V 2004 List of elements for 5.7L VIN P, Starting Wiring Diagram for Cadillac CTS V 2004: 36 (on engine block, near generator) g102 (on inner fender wall, near battery) g105 (on right body rail, near right headlamp) g104 Acc Battery Charging circuit Clutch pedal position switch (on clutch pedal bracket) Cpp switch signal Crank voltage Ground distribution system Hot at all times Hot in run or start Htr vlv/ cltch fuse 10a Ign 1 relay Ignition switch Lock Off Pnk Powertrain control module (pcm) R43 R44 R45 R46 R63 R64 R65 R66 Run Splice pack sp200 (in right front of passenger compartment, under dash, above steering column) Start Starter Starter fuse 30a Starter relay Starter relay coil ctrl Starter relay coil voltage Underhood fuse block (right front of engine compartment)
SUPPLEMENTAL RESTRAINTS Supplemental Restraints Wiring Diagram (1 of 2) for Cadillac CTS V 2004 List of elements for Supplemental Restraints Wiring Diagram (1 of 2) for Cadillac CTS V 2004: 33 (in left front seat belt buckle) driver seat belt switch (in seat) (near base of left "b" pillar) driver inflatable restraint side impact sensing module (near base of right "b" pillar) passenger inflatable restraint side impact sensing module Airbag fuse 10a Case ground Computer data lines system Driver inflatable restraint roof rail module (above left "b" pillar) Driver inflatable restraint side impact module (on left side of left front seat) Driver seat belt pretensioner G306 (in passenger compartment, under center console) Ground High control Hot in run or crank Ignition 1 voltage Inflatable restraint sensing & diagnostic module (sdm) (at center of passenger compartment floor, under console) Inflatable restraint steering wheel module (on steering wheel) Inflatable restraint steering wheel module coil Left seat belt switch Low control Low reference Nca Passenger inflatable restraint side impact module (on right side of right front seat) Pnk Right rear fuse block (below right rear seat) Sensor signal Sensor voltage Serial data Shorting bar Shorting clip Stage 1 Stage 2 Tan Supplemental Restraints Wiring Diagram (2 of 2) for Cadillac CTS V 2004 List of elements for Supplemental Restraints Wiring Diagram (2 of 2) for Cadillac CTS V 2004: 23 Air bag indicator Class 2 Computer data lines system Data link connector (dlc) (under left side of dash) Ign Inflatable restraint front end discriminating sensor (on upper radiator support) Inflatable restraint i/p module Instrument panel cluster Logic Message center Nca Passenger inflatable restraint roof rail module (above right "b" pillar) Passenger seat belt pretensioner Radio Serial data Service air bag Shorting bar Shorting clip Splice pack sp200 (right front passenger compartment, under dash, above steering column) Splice pack sp300 (in passenger compartment, on left frame rail, near left side of driver's seat) Stage 1 Stage 2 Underhood fuse block (at right front of engine compartment)
TRANSMISSION
3.2L VIN N 3.2L VIN N, A/T Wiring Diagram (1 of 2) for Cadillac CTS V 2004 List of elements for 3.2L VIN N, A/T Wiring Diagram (1 of 2) for Cadillac CTS V 2004: 52 1-2 shift sol 1-2 shift sol vlv 2-3 shift sol 2-3 shift sol vlv 4-5 shift sol 4-5 shift sol vlv A/t iss hi sig A/t iss lo sig Acc volt Anti-lock brakes system Bas rly ctrl Battery Ecm/tcm fuse 10a G100 (left rear side of eng G104 (on right body rail, near right headlamp) Ground Hot at all times Hot in run or start Ign 1 relay Ign volt Oss sens high Oss sens low Pc sol vlv hi ctrl Pc sol vlv lo ctrl Pnk Pressure control solenoid R43 R44 R45 R46 Red Ser data (can) + Ser data (can) - Serial data Sol pwr feed Tan Tcc sol valve Tcc sol vlv ctrl Tcm/ ipc fuse 15a Tft sens lo ref Tft sens sig Theft fuse 7.5a Transmission Transmission control module (tcm) (at right front side of engine compt) Transmission fluid temperature sensor Transmission input shaft speed sensor Transmission output shaft speed sensor Trs sig a Trs sig b Trs sig c Trs sig p Under- hood fuse block (right front of eng compt) 3.2L VIN N, A/T Wiring Diagram (2 of 2) for Cadillac CTS V 2004 List of elements for 3.2L VIN N, A/T Wiring Diagram (2 of 2) for Cadillac CTS V 2004: 40 (can) + (can) - (left rear side of eng) A11 A12 A13 A14 B12 Dash integration module (under right side of dash, about right closeout/ insulator panel) Data link connector (dlc) (partial) (under left side of dash) E10 Elec prndl fuse 10a Electronic brake control module (at right front corner of eng compt) Electronic prndl Engine control module (ecm) (front of right valve cover) G100 G201 (behind right kick panel) Hot when mini accessory relay energized Hvac control module (behind center of dash, below radio) Inflatable restraint sensing & diagnostic module (under center console) Instrument panel cluster P/n P/n sig Radio Rear integration module (under package shelf trim panel) S114 (in engine harn, 26 cm from starter motor connector) Ser data Serial data Serial data Service transmission trans hot idle engine Splice pack sp 200 (under dash, above steering column) Splice pack sp 300 (in passenger compt, near left side of driver seat) Splice pack sp 303 (in passenger compt, near right rear fuse block) Transmission Transmission internal mode switch Trs sig a Trs sig b Trs sig c Trs sig p Under- hood fuse block (right front of eng compt) 3.2L VIN N, M/T Wiring Diagram for Cadillac CTS V 2004 List of elements for 3.2L VIN N, M/T Wiring Diagram for Cadillac CTS V 2004: 39 (in eng harn, 45 cm from underhood fuse block) (under dash, above steering column) sp200 Backup lamp switch Ccp switch Class 2 data Clutch pedal position switch (on clutch pedal bracket) Computer data lines system Engine control module (ecm) (front of right valve cover) Engine controls system G100 (left rear side of eng) G104 (on right body rail, near right headlamp) Hot at all times Hot in run or start Htr/vlv clutch fuse 10a Ign 1 relay Main relay Pnk R43 R44 R45 R46 R48 R49 R63 R64 R65 R66 Rear integration module (rim) (under package shelf trim panel) Rev sw sig S132 Start rly ctrl Start rly volt Starter fuse 30a Starter relay Starting/ charging system Tos fuse 10a Under- hood fuse block (right front of eng compt) Vehicle speed sensor (on right rear of transmission) Vss sig
3.6L VIN 7 3.6L VIN 7, A/T Wiring Diagram (1 of 2) for Cadillac CTS V 2004 List of elements for 3.6L VIN 7, A/T Wiring Diagram (1 of 2) for Cadillac CTS V 2004: 55 (partial) (under left side of dash) 1-2 shift sol 1-2 shift sol vlv 2-3 shift sol 2-3 shift sol vlv 4-5 shift sol 4-5 shift sol vlv A/t iss hi sig A/t iss lo sig Acc volt Anti-lock brakes system Bas rly ctrl Battery Data link connector Ecm/tcm fuse 10a G104 (on right body rail, near right headlamp) G132 (front of right cylinder head) Ground Hi spd gmlan + Hi spd gmlan 2 Hot at all times Hot in run or start Ign 1 relay Ign volt Oss sens high Oss sens low Pc sol vlv hi ctrl Pc sol vlv lo ctrl Pnk Pressure control solenoid R43 R44 R45 R46 Red Ser data (can) + Ser data (can) - Sol pwr feed Tan Tcc sol valve Tcc sol vlv ctrl Tcm/ ipc fuse 15a Tft sens lo ref Tft sens sig Theft fuse 7.5a Transmission Transmission control module (tcm) (at right front side of engine compt) Transmission fluid temperature sensor Transmission input shaft speed sensor Transmission output shaft speed sensor Trs sig a Trs sig b Trs sig c Trs sig p Under- hood fuse block (right front of eng compt) 3.6L VIN 7, A/T Wiring Diagram (2 of 2) for Cadillac CTS V 2004 List of elements for 3.6L VIN 7, A/T Wiring Diagram (2 of 2) for Cadillac CTS V 2004: 38 (front of right cylinder head) A11 A12 A13 A14 B12 Dash integration module (under right side of dash, about right closeout/ insulator panel) E10 Elec prndl fuse 10a Electronic brake control module (at right front corner of eng compt) Electronic prndl Engine control module (ecm) (front of right valve cover) G132 G201 (behind right kick panel) Hi spd gmlan + Hi spd gmlan - Hot when mini accessory relay energized Hvac control module (behind center of dash, below radio) Inflatable restraint sensing & diagnostic module (under center console) Instrument panel cluster P/n P/n sig Radio Rear integration module (under package shelf trim panel) S154 (in eng harn, 18 cm from tcm connector) Serial data Serial data Service transmission trans hot idle engine Splice pack sp 200 (under dash, above steering column) Splice pack sp 300 (in passenger compt, near left side of driver seat) Splice pack sp 303 (in passenger compt, near right rear fuse block) Transmission Transmission internal mode switch Trs sig a Trs sig b Trs sig c Trs sig p Under- hood fuse block (right front of eng compt)
5.7L VIN P 5.7L VIN P, M/T Wiring Diagram for Cadillac CTS V 2004 List of elements for 5.7L VIN P, M/T Wiring Diagram for Cadillac CTS V 2004: 54 +5v ref 5v ref Ccp switch Clutch pedal position switch (on clutch pedal bracket) G104 (on right body rail, near right head lamp) Heated oxygen sensors Hot at all times Hot in run or start Htr/vlv clutch fuse 10a Ign 1 relay Instrument cluster Low ref Main relay Main rly ctrl Pnk Powertrain control module (ecm) (behind right front fender) Pre o2/ cam fuse 15a R43 R44 R45 R46 R47 R48 R49 R50 R63 R64 R65 R66 Reverse lockout sol Reverse lockout solenoid (left rear of transmission) S170 (in eng harn, 15.5 cm from c101) Skip shift ind Skip shift ind ctrl Skip shift sol ctrl Skip shift solenoid (left side of transmission) Splice pack sp200 (in right front of passenger compt, under dash, above steering column) Start rly coil volt Start rly ctrl Starte rly coil ctrl Starter fuse 30a Starter relay Starting/ charging system Tan Throttle actuator control module (attached to pcm below battery) Throttle position sensor (on right side of throttle body) Tps no1 sig Tps no2 sig Transmission fluid temperature sensor (in transmission) Uart ser data Under- hood fuse block (right front of eng compt) Vehicle speed sensor (vss) (on left rear of transmission) Vss sig hi Vss sig lo
TRUNK, TAILGATE, FUEL DOOR Trunk Release Wiring Diagram for Cadillac CTS V 2004 List of elements for Trunk Release Wiring Diagram for Cadillac CTS V 2004: 34 (in left front door trim harness, 14.5 cm from ddsa) s502 (not used) (rear of left rear shock tower) g402 A12 Computer data lines system Door locks system Driver door module (on left door, under door trim) Driver door switch assembly (ddsa) Gnd Ground Hot at all times Interior lights system Joint connector Left rear fuse block (below left rear seat) R31 R32 R33 R35 Rear compartment lid ajar switch signal Rear compartment lid release actuator (center of rear compartment lid) Rear compartment lid release switch Rear integration module (under package shelf trim panel) Relay ctrl Release switch Right rear fuse block (below right rear seat) S20 S21 S23 Serial data Switch signal Tan Trk dr rel sol relay micro Trunk diode Trunk door release fuse 10a
WARNING SYSTEMS Warning Systems Wiring Diagram for Cadillac CTS V 2004 List of elements for Warning Systems Wiring Diagram for Cadillac CTS V 2004: 58 (behind the left kick panel) g200 A11 A12 Audio amplifier (left side of trunk) Auto B10 B11 Base Battery Check tire pressure, service monitor Class 2 (dim) Class 2 (sdm) Class 2 serial data Computer data lines system Dash integration module (under right side of dash, above right closeout/insulator panel) Dim/aldl fuse 10a Door ajar signal Door ajar sw signal Door open signal Driver door latch assembly Driver door module (on left door, under door trim) Driver seat belt switch Driver sig Fasten safety belt indicator G200 (behind the left kick panel) Gnd Ground Head Headlamps on sig Hot at all times Ignition key alarm switch (on steering column) Inflatable restraint sensing & diagnostic module (under center console) Instrument panel cluster (ipc) Key in ign sw sig Keyless entry/ tire pressure antenna signal Lf door sw sig Lights on indicator Logic Low ref Low tire pressure indicator Luxury Message center Nca Off Park Park lamp on sw sig Pnk Radio Radio antenna module (above headliner, near rear window) Rfa rear window antenna S200 S201 S205 Serial data Tan Turn signal/multi-function switch Underhood fuse block (right front of engine compt) Volt check fuse 10a
WIPER/WASHER Wiper/Washer Wiring Diagram for Cadillac CTS V 2004 List of elements for Wiper/Washer Wiring Diagram for Cadillac CTS V 2004: 55 (near left front strut tower) g101 Accy voltage Dash integration module (under right side of dash, above right closeout/insulator panel) Delay G101 (near left front strut tower) G104 (on right body rail, near right headlamp) Ground Hdlp wash circuit breaker 30a Hdlp wash relay Headlamp washer fluid pump Headlamp washer gnd Hot at all times Hot in run or start Hot w/ accessory relay energized Ign 1 relay Int Left heated washer nozzle Lo d5 Logic Mist Nca Off Off d1 Pnk R43 R44 R45 R46 R67 R68 R69 R70 R71 Right heated washer nozzle S204 (w/ headlamp washer) (in the i/p harness, 37 cm from c103) Sp200 (in right front of passenger compartment, under dash, above steering column) Tan Underhood fuse block (right front of engine compartment) Underhood fuse block (right front of engine compt) Wash Wash noz fuse 10a Washer fluid level signal Washer pump ctrl Washer switch signal Windshield washer fluid level switch (at base of washer fluid reservoir) Windshield washer fluid pump (at base of washer fluid reservoir) Windshield wiper/ washer module (at left rear of engine compartment, 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 mod fuse 30a Wpr sw fuse 10a
