Diagram sections — 32 (69 total)
AIR CONDITIONING ANTI-LOCK BRAKES ANTI-THEFT BODY COMPUTER COMPUTER DATA LINES COOLING FAN CRUISE CONTROL DEFOGGERS ELECTRONIC POWER STEERING ELECTRONIC SUSPENSION ENGINE PERFORMANCE EXTERIOR LIGHTS GROUND DISTRIBUTION HEADLIGHTS HORN INSTRUMENT CLUSTER INTERIOR LIGHTS MEMORY SYSTEMS POWER DISTRIBUTION POWER DOOR LOCKS POWER MIRRORS POWER SEATS POWER TOP/SUNROOF POWER WINDOWS RADIO SHIFT INTERLOCKS STARTING/CHARGING SUPPLEMENTAL RESTRAINTS TRANSMISSION TRUNK, TAILGATE, FUEL DOOR WARNING SYSTEMS WIPER/WASHER
AIR CONDITIONING Automatic A/C Wiring Diagram (1 of 2) for Cadillac Seville STS 1999 List of elements for Automatic A/C Wiring Diagram (1 of 2) for Cadillac Seville STS 1999: 69 (hvac harn, 28.5 cm from mode actuator) (hvac harn, 38.5 cm from mode actuator) s274 (hvac harn, 45 cm from mode actuator) (i/p harn) (i/p harn, 8 cm from inst panel harness breakout) 1995 vftc c 5v ref feed 5v vlv signal A/c clu fuse 15a A/c clu relay A/c compressor clutch A/c low side temperature sensor (rear of eng compt, on a/c low side line) A10 A11 A12 Acc Air inlet actuator (behind right side of dash, on hvac module) Air inlet vlv feed Air inlet vlv sig Air temp vlv feed Air temp vlv sig Ambient air temp sensor (center front of vehicle, near hood latch) Battery Blwr sp cntrl C11 C3 b12 Computer data lines system D11 D16 Dash integration module (dim) (on right side of dash, near blower motor) Data line Dim fuse 39 10a Driver air mix actuator (behind left side of dash, on hvac module) G110 (lower left front of engine) G203 (right kick panel) Ground Hot at all times Hot in run Hot in run or start Ign 3 rr fuse 6 10a Ign sw fuse 20 15a Ignition Ignition switch Inside air temperature sensor (behind left side of dash, left of steering column) Instrument panel integration module (ipm) (behind center of dash, above radio) Left a/c temp sensor (left side of dash, in a/c duct) Left inside air temp sensor (left side of dash, in a/c duct) Left sun load sensor (on left side of dash, in defrost grille) Lock Logic, 5v Mode actuator (behind left side of dash, on hvac module) Mode drive feed Motor return Passenger air mix actuator (behind right side of dash, on hvac module) Pnk Rear junction block Right a/c temp sensor (right side of dash, in a/c duct) Right inside air temp sensor (right side of dash, in a/c duct) Right sun load sensor (on right side of dash, in defrost grille) Run S203 (i/p harn, 55.5 cm from radio) S206 S209 S275 Sensor grd Solid state Start Tan Underhood junction block Automatic A/C Wiring Diagram (2 of 2) for Cadillac Seville STS 1999 List of elements for Automatic A/C Wiring Diagram (2 of 2) for Cadillac Seville STS 1999: 71 (console harn, 4 cm from cd changer harn breakout) s318 (rear blower harn, 12.5 cm from rear blower motor) (right rear corner of 1995 vftc c 5 v 87a A/c enable A/c pressure sensor (on lower left front of engine, on a/c compressor) A10 B10 Battery Blend Blower control module (under right side of dash, near center heater outlets) Blower motor Blwr grd Computer data lines system Cool fan 1 fuse 30a Cool fan 1 relay (high speed) Cool fan 2 fuse 30a Cool fan 2 relay (low speed) Cool fan s/p relay (series/parallel) D10 Data line E10 Ect sens grd Ect sens sig Engine coolant temperature sensor Engine, below egr valve) F11 G101 (right front of engine compt) G105 (right rear of eng compt) G200 (left kick panel) G203 (right kick panel) Grd Ground High spd fan cntrl Hot at all times Hot in run Hot in run or start Hvac blo fuse 30a Hvac fuse 10a I/p fuse 7 15a Ign 1 fuse 12 10a Interior lights system Left cooling fan motor Low spd fan cntrl Lwr Med Off Pnk Powertrain control module (left front corner of eng compt, below air cleaner) Rear blower motor (front of center console, below ashtray) Rear blower resistor module (front of center console) Rear blower switch Rear integration module (rim) (behind right side of rear seat back) Rear junction block Rear mode actuator (under front of center console, near rear blower motor) Red Right cooling fan motor Rr blo fuse 10a Rr blo relay Rr blwr enable S317 (console harn, 33 cm from rear blower switch) S322 Sensor grd Sensor return Sp cntrl out Sp input Tan Underhood junction block Upper Compressor Wiring Diagram for Cadillac Seville STS 1999 List of elements for Compressor Wiring Diagram for Cadillac Seville STS 1999: 20 A/c clu fuse 15a A/c clu relay A/c compressor clutch A/c enable A/c pressure sensor (on lower left front of engine, on a/c compressor) A11 A12 C1 c8 C11 Computer data lines system Dash integration module (dim) (on right side of dash, near blower motor) Data line G110 (lower left front of engine) Hot at all times Hot in run or start Instrument panel integration module (ipm) (behind center of dash, above radio) Powertrain control module (left front corner of engine compt, below air cleaner) Sensor ground Sensor return Underhood junction block
ANTI-LOCK BRAKES Anti-lock Brake Wiring Diagrams for Cadillac Seville STS 1999 List of elements for Anti-lock Brake Wiring Diagrams for Cadillac Seville STS 1999: 99 (body harn, 10 cm from left rear door breakout) (left front corner of engine compartment) (left front of engine) (left rear of luggage compt) g404 (top of brake pedal) 5 volt sensor feed Abs fuse 10a Abs mot fuse 40a Abs sol fuse 30a Abs/tcc switch Antilock indicator Battery power Brake pressure modulator valve (bpmv) Brake switch input Brake wear sens C11 C12 C302 Computer data lines system Data lines Delivered torque Delivered torque output Disable input Electronic brake & traction control module (ebtcm) (left front corner of eng compt) Electronic power steering system Electronic suspension system G110 G114 (left rear of engine) G300 (under left front seat) Ground Hot at all times Hot in acc or run Hot in on Ign 1 Ign 1 fuse 10a Instrument panel cluster Instrument panel integration module (behind center of dash) Lateral accelerometer sensor Lateral accelerometer sensor (under left rear seat) Left front brake pad Left front hold valve solenoid Left front isolation valve solenoid Left front prime valve solenoid Left front release valve solenoid Left front wheel speed sensor Left normal force Left rear brake pad Left rear hold valve solenoid Left rear release valve solenoid Left rear wheel speed sensor Lf wss hi input Lf wss lo input Lr wss hi input Lr wss lo input Magna steer hi Magna steer lo Nca Pnk Power input Powertrain control module Pump motor Pump motor power output Pwm swps sig Rear junction block Red Requested torque Requested torque input Rf wss hi input Rf wss lo input Right front brake pad Right front hold valve solenoid Right front isolation valve solenoid Right front prime valve solenoid Right front release valve solenoid Right front wheel speed sensor Right rear brake pad Right rear hold valve solenoid Right rear release valve solenoid Right rear wheel speed sensor Rr wss hi input Rr wss lo input S300 S301 Sensor return Serial data Stop lp fuse 15a Stop- lamp/ btsi switch (top of brake pedal) Stoplamp switch capacitor Swps phase a (digital) Swps phase b (analog) Swps phase b (digital) Tan Tcs valve solenoid control signals Traction control disable switch Under- hood junction block Valve power output Valve solenoid control signals Yaw rate sensor (front center of rear compt) Yaw sensor input
ANTI-THEFT Forced Entry Wiring Diagram for Cadillac Seville STS 1999 List of elements for Forced Entry Wiring Diagram for Cadillac Seville STS 1999: 62 (body harn, 14 cm from breakout to power seat harness under left front seat) A11 A12 A7 c3 Computer data lines system Dash integration module (dim) (right side of dash, near blower motor) Dr lk sw in Dr lk sw ret Drvmdl fuse 10a E10 Exterior lights system (hazard switch assembly) G200 G203 G300 G301 G304 G404 G405 Grd Horn ctrl Horns system (horn relay) Hot at all times Ign sw fuse 15a Instrument cluster J/b (left kick panel) J/b (left side of rear compartment) J/b (right kick panel) J/b (right side of rear compartment) J/b (under left front seat) J/b (under left side of rear seat) J/b (under right front seat) Left front door lock actuator Left front door lock cylinder switch Left front door module (in front of left front door) Left rear door lock actuator Left rear door module (in front of left rear door) Lf dr act ret Lf dr open in Lr dr act ret Lr dr open in Pass mdl fuse 10a Pwr wdo circuit breaker 30a Rear compartment lid tamper switch (on lid lock cylinder) Rear integration module (rim) (behind right side of rear seat back) Rear junction block (under left rear seat) Remote keyless entry (rke) module (under rear package shelf) Rf dr act ret Rf dr open in Right front door lock actuator Right front door module (in front of right front door) Right rear door lock actuator Right rear door module (in front of right rear door) Rr dr act ret Rr dr open in Rrdr mdl fuse 10a S303 Sbi Security indicator Serial data Tamper sw in Tan Theft ctrl Pass-Key Wiring Diagram for Cadillac Seville STS 1999 List of elements for Pass-Key Wiring Diagram for Cadillac Seville STS 1999: 24 Accy B6 c2 Computer data lines system E c2 G203 Grd Hot at all times Ignition switch J/b (right kick panel) Lock Off Pass key iii reader exciter (on ignition switch) Pass key iii theft deterrent module (behind left side of dash, right of steering column) Pcm bat fuse 10a Run S203 S205 Sensor ret Sensor sig Serial data Start Starter enable Starting/charging system (start relays) Underhood junction block (right side of engine compt)
BODY COMPUTER Dash Integration Module Wiring Diagram for Cadillac Seville STS 1999 List of elements for Dash Integration Module Wiring Diagram for Cadillac Seville STS 1999: 60 (under right side of rear seat) A10 A11 A12 Acc Air conditioning system Anti-theft system B+ sense B10 B11 B12 Battery Computer data lines system Control pwr Dash integration module (dim) (on right side of dash, near blower motor) Dim fuse 39 10a Dimming ctrl Dimming fd Drl rly out Ext lts flash Exterior lights system Flash-to-pass ctrl Flash-to-pass sw in Foglight rly ctrl G301 G303 Grd Hdlt sw in Headlight ctrl Headlights system Horn rly out Horns system Hot at all times Ign Ign sw fuse 20 15a Ignition switch Inflatable restraint steering wheel module coil (on base of steering column) Interior lights system J/b (under right front seat) Left side steering wheel controls Lock Low side temp ret Low side temp sig Nca Parklight rly Parklt sw in Pnk Power distribution system Rear junction block (under left rear seat) Right side steering wheel controls Run S205 Serial data line Start Steering column fuse holder (near base of steering column) Strg wheel ctrl Strg whl ctrls Switch fuse 2a Wiper on in Wiper/washer system Instrument Panel Integration Module Wiring Diagram for Cadillac Seville STS 1999 List of elements for Instrument Panel Integration Module Wiring Diagram for Cadillac Seville STS 1999: 75 5v ref A10 A11 A12 Actuator ret Air conditioning system Air inlet act fd Air inlet act pos sens in Ambient lt sens in Anti-lock brakes system B10 B11 B12 C10 C11 C12 C13 C14 C15 C16 D10 D11 D12 D13 D14 D15 D16 Drvr air mix act fd Drvr air mix act pos sens in Frt foglight sw in Fuel dr rel sw in G203 Grd Headlights system Hot at all times Hot in run I/p dim sw in I/p fuse 10a Ign Ign 3 rr fuse 10a Ign key cyl lt ctrl Ignition key warning switch Ignition switch Inside air temp sens in Instrument cluster system Instrument panel integration module (ipm) (behind center of dash, behind radio) Int lt sw in Interior lights system J/b (right kick panel) Key-in-ign in Lcd display 55v fd Lft a/c temp sens in Lft htr temp sens in Lft solar temp sens in Mode act pos sens in Mode actuator fd Outside air temp sens Panel dim in Pass air mix act fd Pass air mix act pos sens Pwm blower spd ctrl Rear compt lid rel sw in Rear junction block (under left rear seat) Rt a/c temp sens in Rt htr temp sens in Rt solar temp sens in S203 S204 Sens ret Serial data line Tan Tract ctrl sw in Trunk, tailgate, fuel doors system Twilight delay in Underhood junction block (on right side of eng compt) Rear Integration Module Wiring Diagram for Cadillac Seville STS 1999 List of elements for Rear Integration Module Wiring Diagram for Cadillac Seville STS 1999: 58 (1999) A10 A11 A12 Air conditioning system Anti-theft system B10 B11 B12 Cigar lighter rly ctrl Defogger system Exterior lights system Frt courtesy lt rly out Fuel dr rel rly out Fuel gauge sens grd Fuel level input sig G404 G405 Grd Heated seat inhibit ctrl Heated seat mod status sig Hot at all times Hot in run or start Ign Ign 1 fuse 10a Ign sw fuse 15a Inadvertent pwr in Instrument cluster system Interior light rly ctrl Interior lights system J/b (left side of rear compartment) J/b (right side of rear compartment) Lft rear heated seat ctrl Lid open switch Park brake rly a ctrl Park brake rly b ctrl Park relay control Pnk Power distribution system Power distribution system (cigar relay) Power distribution system (rap relay) Rear blower rly ctrl Rear compartment lid release solenoid (on rear compartment lid latch) Rear courtesy lt rly out Rear defog rly out Rear integration module (rim) (behind right side of rear seat back) Rear junction block (under left rear seat) Retained acc pwr rly out Reverse relay ctrl Rt rear heated seat ctrl Seats system Shift interlock system Shift interlock system (park brake release circuit) Tan Trk ajar sw in Trk key cyl sw sig Trnk rel rly out Trunk, tailgate, fuel doors system
COMPUTER DATA LINES Computer Data Lines for Cadillac Seville STS 1999 List of elements for Computer Data Lines for Cadillac Seville STS 1999: 43 (left kick panel) junction block A11 A12 Aldl fuse 10a B11 B12 Base radio Bose radio Cellular telephone docking station Continuously variable road sensing suspension (cvrss) module (behind right rear seat back) D10 D14 D15 Dash integration module (dim) (on right side of dash, near blower motor) Data class 2 Data link connector (under left side of dash, near steering column) Diagnostic Electronic brake and traction control module (on left front corner of engine compt, below air cleaner housing) G200 G203 Hot at all times Inflatable restraint sensing and diagnostic module (sdm) (under right front seat) Instrument cluster Instrument panel integration module (behind center of dash, above radio) Junction block (right kick panel) Left front door module (lfdm) (inside left front door) Memory seat module (under left front seat) Pass-key iii module (behind left side of dash, right of steering column) Powertrain control module (at left front corner of engine compt, below air cleaner housing) Radio Radio amplifier (behind left side of rear seat back) Rear integration module (rim) (behind right side of rear seat back) Rear junction block (under left rear seat) Remote keyless entry (rke) module (under rear package shelf) S200 (body harn, behind left side of dash) S202 S210 S212 S305 (body harn, under right rear seat, 29cm from cross-car harness breakout) S327 (left seat harn, under left front seat) S421 (body harn) Steering column tilt/telescope module (w/ tele steering column option) (behind left side of dash, left of steering column) Tan
COOLING FAN Cooling Fan Wiring Diagram for Cadillac Seville STS 1999 List of elements for Cooling Fan Wiring Diagram for Cadillac Seville STS 1999: 26 A10 A11 B10 C10 C11 Cool fan 1 fuse 30a Cool fan 1 relay (high speed) Cool fan 2 fuse 30a Cool fan 2 relay (low speed) Cool fan s/p relay (series/parallel) D10 E10 E11 Ect sens grd Ect sens sig Engine coolant temperature sensor (right rear corner of eng, below egr valve) F11 Fan ctrl G10 G101 (right front of eng compt) G11 Hot at all times Left cooling fan motor Powertrain control module (left front corner of engine compt, below air cleaner) Right cooling fan motor Underhood junction block
CRUISE CONTROL Cruise Control Wiring Diagram for Cadillac Seville STS 1999 List of elements for Cruise Control Wiring Diagram for Cadillac Seville STS 1999: 40 (body harn, left side of dash) (center rear of engine compt) Abs/tcc switch (top of brake pedal) All times C302 (left front of pass compt) Cancel Cancel input Cr cont fuse 10a Cruise control module Cruise inhibit Cruise inhibit input Cruise on input Cruise status Cruise switch G100 (left side of engine compt) Ground Hot at Hot in run Ign 1 fuse 10a Ignition Instrument cluster system Multifunction lever Off Or start Pnk Powertrain control module (pcm) (left front corner of engine compt) R/a Rear junction block (under left rear seat) Resume/accel input S201 Set/ coast Set/coast input Stop lp fuse 15a Stop/btsi/ cruise brake switch Underhood junction block (right rear of engine compt) Vehicle speed input Vehicle speed sensor (vss) (on transaxle case extension) Vss out Vss return Vss signal
DEFOGGERS Defogger Wiring Diagram for Cadillac Seville STS 1999 List of elements for Defogger Wiring Diagram for Cadillac Seville STS 1999: 33 Acc C1 c8 C2 c C3 c4 Computer data lines Data line Door locks system Drvrmdl fuse 10a Feed G200 G203 Grd Hot at all times Ignition switch Instrument panel integration module (behind center of dash) J/b (left kick panel) J/b (right kick panel) Left front door module (in front of left front door) Left outside heated mirror Lock Passmdl fuse 10a Pwr Rear defog control Rear defogger Rear defogger relay Rear integration module (behind right side of rear seat back) Rear junction block (under left rear seat) Return Right front door module (in front of right front door) Right outside heated mirror Rr defog fuse 40a Simple bus interface Start
ELECTRONIC POWER STEERING Electronic Power Steering Wiring Diagram for Cadillac Seville STS 1999 List of elements for Electronic Power Steering Wiring Diagram for Cadillac Seville STS 1999: 18 Abs fuse 10a Abs mot fuse 40a Abs sol fuse 30a Battery C12 Computer data lines system Data Electronic brake/ traction control module (ebtcm) (on left front corner of engine compartment, below air cleaner housing) Ground Hot at all times Hot in run Ignition Input high Input low Rear junction block (under left rear seat) Red Underhood junction block (on right side of engine compartment, near power steering pump) Variable steering actuator (on left side of power steering rack)
ELECTRONIC SUSPENSION Electronic Suspension Wiring Diagram for Cadillac Seville STS 1999 List of elements for Electronic Suspension Wiring Diagram for Cadillac Seville STS 1999: 81 (body harn, left side of dash) s201 8v reference A10 A11 A12 Automatic level control compressor (under rear of vehicle, near rear suspension carrier) B10 B11 B12 Battery voltage C10 C11 C12 C13 C14 C15 C16 Compressor motor Computer data lines Continuously variable road sensing suspension (cvrss) module (behind right rear seat back) Cvrtd fuse 10a D10 D11 D12 D13 D14 D15 D16 Damper relay Data line Elc fuse 30a Elc relay Elc relay ctrl Electronic brake/traction control module (ebtcm) (left front corner of engine compt) Exhaust solenoid G405 Ground Hot at all times Hot in run Hot in run or off Iccs data Ign 3 rr fuse 10a Ignition voltage Instrument cluster system, cruise control system J/b (right side of rear compt) Left front damper actuator (left front of vehicle, in strut) Left front suspension position sensor (on left front suspension support) Left rear damper actuator (left rear of vehicle, in strut) Left rear suspension position sensor (on left rear suspension support) Lf damper ctrl Lf damper out Lf position sens Lift/dive signal Lift/dive signal out Lr damper ctrl Lr damper out Lr position sens Nca Nca nca Powertrain control module (pcm) (left front corner of engine compt, below air cleaner) Rear junction block (under left rear seat) Red Relay ctrl Relay out Rf damper ctrl Rf damper out Rf position sens Right front damper actuator (right front of vehicle, in strut) Right front suspension position sensor (on right front suspension support) Right rear damper actuator (right rear of vehicle, in strut) Right rear suspension position sensor (on right rear suspension support) Rr damper ctrl Rr damper out Rr position sens Sensor return T10 T11 V10 V11 Vehicle speed output Vss
ENGINE PERFORMANCE
4.6L 4.6L VIN 9, Engine Performance Wiring Diagrams (1 of 4) for Cadillac Seville STS 1999 List of elements for 4.6L VIN 9, Engine Performance Wiring Diagrams (1 of 4) for Cadillac Seville STS 1999: 70 5v ref out A/c comp clutch ctrl A/c pressure sensor (lower left front of engine) Abs switch Air conditioning system Automatic transaxle Class ii data link Computer data lines system Cruise control system Cruise engaged Cruise inhibit Ect sens return Egr 5v ref out Egr pos sens return Electronic suspension system Engine coolant temperature (ect) sensor (right rear corner of engine) Evaporative emissions (evap) control solenoid (rear of right cam cover) Exhaust gas recirc- ulation (egr) valve (top right rear of engine) Fuel pump feedback Fuel tank pressure sensor (top of fuel tank) G117 (lower right rear of engine) G117 (right rear of engine) Gen 'f' term feedback Iac sol coil ctrl Iat sens return Idle air control (iacv) valve (throttle body) Intake air temperature (iat) sensor (left front of engine compt) Lift/dive sig out Map 5v ref out Map sens in Map sensor return Massair flow (maf) sensor (on throttle body) Neutral safety sw in Park/neutral sw 'a' Park/neutral sw 'b' Park/neutral sw 'c' Pcm ground Pnk Post cat ho2s in hi Post cat ho2s in lo Power (battery) Power (ignition 0) Power (ignition 1) Powertrain control module (pcm) (left front corner of engine compt) Pwr steer pres sw in Red Ref voltage Sensor ground Sensor signal Shift 'a' sol ctrl Shift 'b' sol ctrl Starting/ charging system Tan Tan b Tcc brake sw in Tcc sol ctrl Throttle position (tp) sensor (on throttle body) Tp sens in Tp sens return Tps 5v ref out Trans press sol ctrl Trans press sol enable Trans press sw 'a' in Trans press sw 'b' in Trans press sw 'c' in Trans temp sens in Trans temp sens rtrn Turbine speed in hi Turbine speed in lo Turbine speed sensor 4.6L VIN 9, Engine Performance Wiring Diagrams (2 of 4) for Cadillac Seville STS 1999 List of elements for 4.6L VIN 9, Engine Performance Wiring Diagrams (2 of 4) for Cadillac Seville STS 1999: 27 1-2 shift sol 2-3 shift sol Abs/tcc switch (top of brake pedal) Acc Automatic transaxle Automatic transmission Cruise control system E10 Fluid pressure manual valve position switch Hot at all times Hot in run and start Ign 1 fuse 10a Ignition switch Lock Pcm batt fuse 10a Pcm ign fuse 10a Pnk Pressure control solenoid Rear fuse block Red Run S205 Start Tan Torque converter clutch solenoid Trans- axle temper- ature sensor Underhood junction block 4.6L VIN 9, Engine Performance Wiring Diagrams (3 of 4) for Cadillac Seville STS 1999 List of elements for 4.6L VIN 9, Engine Performance Wiring Diagrams (3 of 4) for Cadillac Seville STS 1999: 37 (not used) (right rear of engine) (right rear of engine) g117 (top right rear of engine) Camshaft position sensor (front of right cylinder head) Crankshaft position (ckp) sensor a (left side of engine block) Crankshaft position (ckp) sensor b (left side of engine block) D10 Dis fuse 20a Engine oil pressure switch (left side of engine) F/pmp fuse 20a Fuel pump relay Fuel tank unit (top of fuel tank) G117 G312 (behind right side of rear seat) G405 (right rear of trunk) Hot at all times Hot in run and start Ign Ignition amplifier and switching module Ignition control module (icm) Instrument cluster Oxy sen a fuse 20a Oxy sen b fuse 20a Park/ neutral position (pnp) switch (on transaxle, below throtle body) Pnk Power steering pressure (psp) switch (on power steering b high pressure pnk line) Rear junction block Service engine soon indicator Spark plugs Tach signal in Tan Under- hood junction block Underhood junction block Vehicle speed sensor (vss) (on trans- axle case extension) Vent sol fuse 10a Vss in 4.6L VIN 9, Engine Performance Wiring Diagrams (4 of 4) for Cadillac Seville STS 1999 List of elements for 4.6L VIN 9, Engine Performance Wiring Diagrams (4 of 4) for Cadillac Seville STS 1999: 69 (right rear of engine) 24x ref hi in 4x ref hi in A8 pnk Anti-lock brakes system B9 pnk Bypass spark out Cam hi in Cool fan hi speed ctrl Cool fan lo speed ctrl Cooling fans system Cruise control system Delivered torque out Desired torque in Ect sens in Egr valve feedback Egr valve sol ctrl Electronic suspension system Engine oil level switch (left front of engine) Evap ctrl sol out Evap purge vent ctrl Evaporative emissions (evap) canister purge vent valve (center rear of vehicle) Front heated oxygen sensor (on left side of engine, on exhaust manifold) Front ho2s in hi Front ho2s in lo Fuel inj 1 ctrl Fuel inj 2 ctrl Fuel inj 3 ctrl Fuel inj 4 ctrl Fuel inj 5 ctrl Fuel inj 6 ctrl Fuel inj 7 ctrl Fuel inj 8 ctrl Fuel injectors Fuel pump relay ctrl G114 (left rear of engine) G117 G117 (lower right rear of engine) Hot in run and start Iat sens in Ignition ctrl feedback Injr 1 fuse 10a Injr 2 fuse 10a Knock sens in Knock sensor (ks) (center top of engine) Maf sens in Mil indic ctrl Nca Oil level sw in Oil press sens in Pcm ground Pnk Post-converter heated oxygen sensor (rear of cata- lytic converter) Power (ignition 1) Powertrain control module (pcm) (left front corner of engine compt) Pressure sens Rear h02s in lo Rear heated oxygen sensor (on right side of engine, on exhaust manifold) Rear ho2s in hi Ref lo in S110 S111 S201 Tach signal out Tan Under- hood junction block Vss in hi Vss in lo Vss out (4000 ppm) 4.6L VIN Y, Engine Performance Wiring Diagrams (1 of 4) for Cadillac Seville STS 1999 List of elements for 4.6L VIN Y, Engine Performance Wiring Diagrams (1 of 4) for Cadillac Seville STS 1999: 70 5v ref out A/c comp clutch ctrl A/c pressure sensor (lower left front of engine) Abs switch Air conditioning system Automatic transaxle Class ii data link Computer data lines system Cruise control system Cruise engaged Cruise inhibit Ect sens return Egr 5v ref out Egr pos sens return Electronic suspension system Engine coolant temperature (ect) sensor (right rear corner of engine) Evaporative emissions (evap) control solenoid (rear of right cam cover) Exhaust gas recirc- ulation (egr) valve (top right rear of engine) Fuel pump feedback Fuel tank pressure sensor (top of fuel tank) G117 (lower right rear of engine) G117 (right rear of engine) Gen 'f' term feedback Iac sol coil ctrl Iat sens return Idle air control (iacv) valve (throttle body) Intake air temperature (iat) sensor (left front of engine compt) Lift/dive sig out Map 5v ref out Map sens in Map sensor return Massair flow (maf) sensor (on throttle body) Neutral safety sw in Park/neutral sw 'a' Park/neutral sw 'b' Park/neutral sw 'c' Pcm ground Pnk Post cat ho2s in hi Post cat ho2s in lo Power (battery) Power (ignition 0) Power (ignition 1) Powertrain control module (pcm) (left front corner of engine compt) Pwr steer pres sw in Red Ref voltage Sensor ground Sensor signal Shift 'a' sol ctrl Shift 'b' sol ctrl Starting/ charging system Tan Tan b Tcc brake sw in Tcc sol ctrl Throttle position (tp) sensor (on throttle body) Tp sens in Tp sens return Tps 5v ref out Trans press sol ctrl Trans press sol enable Trans press sw 'a' in Trans press sw 'b' in Trans press sw 'c' in Trans temp sens in Trans temp sens rtrn Turbine speed in hi Turbine speed in lo Turbine speed sensor 4.6L VIN Y, Engine Performance Wiring Diagrams (2 of 4) for Cadillac Seville STS 1999 List of elements for 4.6L VIN Y, Engine Performance Wiring Diagrams (2 of 4) for Cadillac Seville STS 1999: 27 1-2 shift sol 2-3 shift sol Abs/tcc switch (top of brake pedal) Acc Automatic transaxle Automatic transmission Cruise control system E10 Fluid pressure manual valve position switch Hot at all times Hot in run and start Ign 1 fuse 10a Ignition switch Lock Pcm batt fuse 10a Pcm ign fuse 10a Pnk Pressure control solenoid Rear fuse block Red Run S205 Start Tan Torque converter clutch solenoid Trans- axle temper- ature sensor Underhood junction block 4.6L VIN Y, Engine Performance Wiring Diagrams (3 of 4) for Cadillac Seville STS 1999 List of elements for 4.6L VIN Y, Engine Performance Wiring Diagrams (3 of 4) for Cadillac Seville STS 1999: 37 (not used) (right rear of engine) (right rear of engine) g117 (top right rear of engine) Camshaft position sensor (front of right cylinder head) Crankshaft position (ckp) sensor a (left side of engine block) Crankshaft position (ckp) sensor b (left side of engine block) D10 Dis fuse 20a Engine oil pressure switch (left side of engine) F/pmp fuse 20a Fuel pump relay Fuel tank unit (top of fuel tank) G117 G312 (behind right side of rear seat) G405 (right rear of trunk) Hot at all times Hot in run and start Ign Ignition amplifier and switching module Ignition control module (icm) Instrument cluster Oxy sen a fuse 20a Oxy sen b fuse 20a Park/ neutral position (pnp) switch (on transaxle, below throtle body) Pnk Power steering pressure (psp) switch (on power steering b high pressure pnk line) Rear junction block Service engine soon indicator Spark plugs Tach signal in Tan Under- hood junction block Underhood junction block Vehicle speed sensor (vss) (on trans- axle case extension) Vent sol fuse 10a Vss in 4.6L VIN Y, Engine Performance Wiring Diagrams (4 of 4) for Cadillac Seville STS 1999 List of elements for 4.6L VIN Y, Engine Performance Wiring Diagrams (4 of 4) for Cadillac Seville STS 1999: 69 (right rear of engine) 24x ref hi in 4x ref hi in A8 pnk Anti-lock brakes system B9 pnk Bypass spark out Cam hi in Cool fan hi speed ctrl Cool fan lo speed ctrl Cooling fans system Cruise control system Delivered torque out Desired torque in Ect sens in Egr valve feedback Egr valve sol ctrl Electronic suspension system Engine oil level switch (left front of engine) Evap ctrl sol out Evap purge vent ctrl Evaporative emissions (evap) canister purge vent valve (center rear of vehicle) Front heated oxygen sensor (on left side of engine, on exhaust manifold) Front ho2s in hi Front ho2s in lo Fuel inj 1 ctrl Fuel inj 2 ctrl Fuel inj 3 ctrl Fuel inj 4 ctrl Fuel inj 5 ctrl Fuel inj 6 ctrl Fuel inj 7 ctrl Fuel inj 8 ctrl Fuel injectors Fuel pump relay ctrl G114 (left rear of engine) G117 G117 (lower right rear of engine) Hot in run and start Iat sens in Ignition ctrl feedback Injr 1 fuse 10a Injr 2 fuse 10a Knock sens in Knock sensor (ks) (center top of engine) Maf sens in Mil indic ctrl Nca Oil level sw in Oil press sens in Pcm ground Pnk Post-converter heated oxygen sensor (rear of cata- lytic converter) Power (ignition 1) Powertrain control module (pcm) (left front corner of engine compt) Pressure sens Rear h02s in lo Rear heated oxygen sensor (on right side of engine, on exhaust manifold) Rear ho2s in hi Ref lo in S110 S111 S201 Tach signal out Tan Under- hood junction block Vss in hi Vss in lo Vss out (4000 ppm)
EXTERIOR LIGHTS Back-up Lamps Wiring Diagram for Cadillac Seville STS 1999 List of elements for Back-up Lamps Wiring Diagram for Cadillac Seville STS 1999: 10 G404 Hot at all times J/b (left side of rear compt) Left backup lamp Nsbu fuse 10a Power mirrors (automatic day/night mirror) Rear integration module (behind right side of rear seat back) Rear junction block (under left rear seat) Reverse relay Right backup lamp
GROUND DISTRIBUTION Ground Distribution Wiring Diagram (1 of 3) for Cadillac Seville STS 1999 List of elements for Ground Distribution Wiring Diagram (1 of 3) for Cadillac Seville STS 1999: 82 (console harn, 19cm from right hand heated seat switch connector) A/c compressor clutch A11 Acc relay Ashtray lamp Auxiliary power outlet B12 Battery Battery thermistor Brake booster vacuum sensor Brake fluid level switch Cigar lighter Coolant level switch Cooling fan relay Cruise control module Dash integration module Data link connector Driver's inflatable restraint side impact sensing module Drl relay Electronic brake and traction control module Engine oil level switch Engine oil pressure switch F11 Front heated oxygen sensor G101 (right front of engine compartment) G114 G114 left rear of engine) G119 G1o1 G1o8 G200 G301 (under right front seat) G303 (under right side of rear seat) Headlamp dimmer switch Headlamp switch Hood ajar switch Ign-1 relay Ignition control module Inflatable restraint sensing diagnostic module Inflatable restraint steering wheel module coil Instrument cluster J/b (left kick panel) J/b (left radiator support) J/b (left rear of engine) J/b (right front of engine compartment) J/b (right front of engine) Left cooling fan motor Left driver information center switch Left front door module Left front heated seat switch Left rear door module Left steering wheel controls M11 Mass air flow sensor Nca Park/ neutral position switch Passenger's inflatable restraint side impact sensing module Post- converter heated oxygen sensor Powertrain control module Prndl lamp Rear blower switch Rear cigar lighter Rear heated oxygen sensor Rear mode actuator Release switch assembly Right front heated seat switch Right horn "a" note Right horn "f" note Right steering wheel controls S212 (i/p harn, 44cm from left driver information center switch) S217 S318 (console harn, 4cm from cd changer breakout) S321 Shift interlock solenoid Steering column tilt/ telescoping module Traction control disable switch Turn signal switch Underhood junction block Underhood lamp Windshield washer fluid level sensor Windshield washer pump Windshield wiper motor Ground Distribution Wiring Diagram (2 of 3) for Cadillac Seville STS 1999 List of elements for Ground Distribution Wiring Diagram (2 of 3) for Cadillac Seville STS 1999: 67 Blower control module Cellular telephone docking station Compact disk changer D10 D16 Dash integration module Data link connector E16 Front courtesy relay Fuel pump relay G203 G300 G301 G304 Hazard switch assembly Headlamp switch I/p compartment lamp switch Ign-1 relay Ign-3 relay Ignition switch Inside air temp sensor Instrument cluster Instrument panel integration module J/b (right kick panel) J/b (under left front seat) J/b (under left side of rear seat) J/b (under right front seat) Left adaptive lumbar module Left driver information center switch Left front heated seat module Left front seat belt switch Left lumbar switch Left massaging lumbar module Left rear door module Left rear heated seat module Left seat switch Memory seat module Navigation display module Nca Pass- key 3 theft deterrent module Radio Radio amplifier Rear courtesy relay Rear junction block Release switch assembly Remote keyless entry module Right adaptive lumbar module Right driver information center switch Right front door module Right front heated seat module Right lumbar switch Right massaging lumbar module Right rear door module Right rear heated seat module Right seat switch S203 (i/p harn, 55cm from radio connector) S210 (i/p harn, 22cm from left solar sensor harness breakout) S313 (left seat harn, under left front seat) S315 (right seat harn, under right front seat) Traction control disable switch W/ auto contour control W/ memory seats W/ memory seats, auto contour control and heated seats W/o auto contour control W/o memory seats W/o memory seats, auto contour control and heated seats W/o uy4 Ground Distribution Wiring Diagram (3 of 3) for Cadillac Seville STS 1999 List of elements for Ground Distribution Wiring Diagram (3 of 3) for Cadillac Seville STS 1999: 58 (headliner harn, center front of headliner) (left headlamp harn, 46 cm from high beam connector) (right s102 A12 Automatic day/ night mirror Automatic level control compressor Automatic level control module C310 Cellular telephone module Center high mount stop lamp Continuously variable road sensing suspension module Fuel door release solenoid Fuel pump Fuel tank unit G404 G405 Headlamp harn, 46 cm from high beam connector) J/b (left side of rear compartment) J/b (right side of rear compartment) Left back-up lamp Left cornering lamp Left front fog lamp Left front side marker lamp Left license lamp Left low beam headlamp Left park/ turn lamp Left reading switch Left rear turn lamp Left tail lamp Left tail/ stop lamp Left vanity lamp Outside moisture sensor Overhead console Rear compartment lid release solenoid Rear compartment lid tamper switch Rear integration module Right back-up lamp Right front fog lamp Right front side marker lamp Right high beam headlamp Right license lamp Right low beam headlamp Right park/ turn lamp Right reading switch Right rear brake pad Right rear turn lamp Right tail lamp Right tail/ stop lamp Right vanity lamp S100 S114 S309 S409 S412 S413 S421 Stop lamp resistor Sunroof control module
HEADLIGHTS Headlight Wiring Diagram for Cadillac Seville STS 1999 List of elements for Headlight Wiring Diagram for Cadillac Seville STS 1999: 62 (i/p harn, left of dash, approx 10cm from breakout to cluster) s206 (top of instr cluster) ambient light sensor B10 B11 B12 C10 C11 Dash integration module (right side of dash) Drl relay F11 Flash- to-pass switch Fog lp relay Fog/ drl fuse 15a Front fog lamp switch G101 G200 G405 Hdhi bml fuse 10a Hdhi bmr fuse 10a Hdlo bml fuse 15a Hdlo bmr fuse 15a Hdlp hi bm relay Hdlp lo bm relay Headlamp beam switch Headlamp dimmer switch Headlamp switch Hot at all times Hot in on and start Instrument panel integration module (behind center of dash, above radio) Interior lights system J/b (left kick panel) J/b (right front of engine compt) J/b (right side of rear compt) J10 J11 L10 L11 Left front fog lamp Left high beam head- lamp Left low beam head- lamp Low M10 M11 N11 Nca Off P10 P11 Park lamp switch Pnk Prk lp relay Rear junction block (under left rear seat) Right front fog lamp Right high beam head- lamp Right low beam head- lamp S100 S102 S114 S209 (i/p harn, left of dash, approx 4cm from breakout to left solar sensor) S212 S217 Underhood junction block (right side of engine compt)
HORN Horn Wiring Diagram for Cadillac Seville STS 1999 List of elements for Horn Wiring Diagram for Cadillac Seville STS 1999: 18 A12 B12 C202 D10 Dash integration module (dim) (on right side of dash, near blower motor) G101 Horn fuse 15a Horn relay Horn relay control Horn slip ring Horn switch Hot at all times Inflatable restraint steering wheel module J/b (on right front of engine compt) Right a note horn (behind right front fender) Right f note horn (behind right front fender) Turn signal switch Underhood junction block (right side of engine compt, near power steering pump)
INSTRUMENT CLUSTER Instrument Cluster Wiring Diagram (1 of 2) for Cadillac Seville STS 1999 List of elements for Instrument Cluster Wiring Diagram (1 of 2) for Cadillac Seville STS 1999: 58 (right front of engine compartment) g101 55 volt feed A10 A11 A12 Abs ind control B10 B11 B12 Battery (b+) Brake warning ind control Check engine ind control Class 2 serial data Coolant level switch in Driver info a/b sw in Driver info down sw in Driver info e/m sw in Driver info on/off sw in Driver info reset sw in Driver info speed sw in Driver info trip sw in Driver info up sw in English/ metric Exterior lights system G200 G203 Ground Hot at all times Hot in accy or run I/p fuse 15a Ign1 fuse 10a Ignition Info down Info reset Info up Instrument cluster J/b (left kick panel) J/b (right kick panel) Left driver infor- mation center switch Left turn signal in On/ off Park brake switch (under left side of dash, on park brake pedal) Park brake switch in Pnk Rear junction block (under left rear seat) Right driver information center switch Right turn signal in S203 S210 S212 Speed Tach signal in Trip a/b Trip reset Underhood junction block (right side of engine compt, near power steering pump) Vss signal in Windshield wash sensor in Windshield washer fluid level sensor (right side of engine compt, top of washer fluid reservoir) Instrument Cluster Wiring Diagram (2 of 2) for Cadillac Seville STS 1999 List of elements for Instrument Cluster Wiring Diagram (2 of 2) for Cadillac Seville STS 1999: 38 (body harn, left side of dash) (left front corner of engine compt, under air cleaner) electronic brake and traction control module 55 volt feed A11 A12 Abs ind ctrl Brake fluid level switch (left rear of engine compt, master cylinder reservoir) Cool temp sig Coolant level switch (left side of engine compt, bottom of coolant a reservoir) D15 Dash integration module (right side of dash, near blower motor) Engine coolant temperature (ect) sensor (right rear corner of engine, below exhaust gas recirculation valve) Engine oil pressure switch (center front of engine, near engine oil filler adapter) Fuel level sensor w/ fuel pump (top of fuel tank) Fuel sig in G108 G119 Inflatable restraint sensing & diagnostic module (sdm) (under right front seat) Instrument panel integration module (climate control unit) J/b (left radiator support) J/b (right front of engine) Left front door module (in front of left front door, near radio speaker) Mil ind ctrl Oil press sig Park/neutral position (pnp) switch (left side of transaxle, below throttle body) Pnp switch Powertrain control module (left front corner of engine compt, under air cleaner) Rear integration module (right side of trunk, behind rear seat back) S200 (body harn, left side of dash) S201 S202 Sens grd Sens rtrn Serial data Tach out Vehicle speed sensor (on transaxle case extension) Vss sig in Vss sig out
INTERIOR LIGHTS Courtesy Lamps Wiring Diagram (1 of 2) for Cadillac Seville STS 1999 List of elements for Courtesy Lamps Wiring Diagram (1 of 2) for Cadillac Seville STS 1999: 56 (1999) (1999) j12 (2000-01) (1999-00) (2001) (2000-01) l11 (2000-01) l12 (1999) (body harn, approx 14 cm from 18-pin conn under left front seat) s303 Auto C308 sp308 (near center of right front door sill) Class 2 serial data line Computer data lines system E11 E12 G203 G404 Ground Hot at all times I/p compartment lamp I/p compartment lamp switch Inadvertent power input Instrument panel integration module (ipm) (behind center of dash, above radio) Int lp fuse 10a Int lp relay Interior lamp cntrl Interior lamp switch Interior lamps off input Interior lamps on input J/b (left side of rear compt) J/b (right kick panel) J11 (1999) (2000-01) Left front door jamb switch Left front door module (lfdm) (in front of left front door, near radio speaker) Left front door open input Left rear door jamb switch Left rear door module (lrdm) (in front of left rear door, near radio speaker) Left rear door open input Nca Off Overhead console Rear fuse block (under left rear seat) Rear integration module (rim) (behind right side of rear seat back) Right footwell courtesy lamp Right front door courtesy lamp Right front door jamb switch Right front door module (rfdm) (in front of right front door, near radio speaker) Right front door open input Right rear door courtesy lamp Right rear door jamb switch Right rear door module (rrdm) (in front of right rear door, near radio speaker) Right rear door open input S210 S309 Simple bus interface (sbi) Tan Tan/ To rear junction block (diagram 2 of 2) To sp301 (diagaram 2 of 2) Courtesy Lamps Wiring Diagram (2 of 2) for Cadillac Seville STS 1999 List of elements for Courtesy Lamps Wiring Diagram (2 of 2) for Cadillac Seville STS 1999: 38 (1999-00) (2001) A12 B12 C301 sp301 (near center of left front door sill) C310 sp310 (near overhead console) D10 F10 F11 From c308 (1999-00) from sp308 (2001) (diagram 1 of 2) From rear junction block (diagram 1 of 2) Front courtesy lamp relay control Frt ctsy relay G304 G404 Hot at all times J/b (left side of rear compt) J/b (under left side of rear seat) Left footwell courtesy lamp Left front door courtesy lamp Left reading lamp Left reading switch Left rear door courtesy lamp Left vanity mirror Nca Overhead console Overhead courtesy/ reading lamp Reading lamp switch Rear compartment lamp Rear compartment lid release solenoid Rear courtesy lamp relay control Rear fuse block (under left rear seat) Rear integration module (rim) (behind right side of rear seat back) Right reading lamp Right reading switch Right vanity mirror Rr ctsy relay Sp301 (near center of left front door sill) Sp310 (near overhead console) Instrument Illumination Wiring Diagram (1 of 2) for Cadillac Seville STS 1999 List of elements for Instrument Illumination Wiring Diagram (1 of 2) for Cadillac Seville STS 1999: 67 (1999-00) (1999-00) (2000) (2001) (i/p harn, approx 8 cm from inst cluster breakout) s208 19 cm from right heated seat switch breakout) 5v ref Ashtray lamp B11 C1 a4 C1 b8 C1 d4 C1 d8 C2 b12 C2 b3 C302 sp302 (near center of left front door sill) Control power D14 Dash integration module (dim) (on right side of dash, near blower motor) Dimr fuse 14 10a F nca G200 G203 Ground Head Headlamp switch Hot at all times Hvac control assembly (auxiliary) I/p dimmer switch I/p dimmer switch input Incandescent dimming input Incandescent dimming output Inflatable restraint steering wheel module coil Instrument panel integration module (ipm) (behind center of dash, above radio) J/b (left kick panel) J/b (right kick panel) Left driver information center (dic) switch Left front heated seat switch Left steering wheel controls Left steering wheel controls (2001) Low reference Nca Nca b Nca d Off Park Park lamp input Park lamp relay control Park lamp switch input Prk lp relay Prndl lamp Radio Rear fuse block (under left rear seat) Release switch assembly Right driver information center (dic) switch Right front heated seat switch Right steering wheel controls Right steering wheel controls (2001) S206 (i/p harn, approx 8 cm from inst cluster breakout) S210 S212 S217 S318 S320 Steering column fuse holder Switch fuse 2a Traction control switch Twilight delay input Instrument Illumination Wiring Diagram (2 of 2) for Cadillac Seville STS 1999 List of elements for Instrument Illumination Wiring Diagram (2 of 2) for Cadillac Seville STS 1999: 53 (1999) j (1999-00) d (1999-00) e (2000-01) (2001) a (2001) c (body harn, approx 14 cm from 18-pin conn under left front seat) s303 (left front door trim harn, approx 52 cm from power door lock switch connector) (left rear door trim harn, inside left rear door) (right front door trim harn, approx 33 cm from power window switch connector) (right rear door trim harn, inside right rear door) A11 A12 C1 b8 C1 d15 C13 C2 a12 C2 b8 Cellular telephone docking station Class 2 serial data line Computer data lines system D13 Dash integration module (dim) (on right side of dash, near blower motor) Display feed Ground Incandescent dimming output Instrument cluster (ipc) Instrument panel integration module (ipm) (behind center of dash, above radio) Left front door module (lfdm) (in front of left front door, near radio speaker) Left front power door lock switch Left front power window switch Left rear door module (lrdm) (in front of left rear door, near radio speaker) Left rear heated seat switch (w/ ka1) Left rear power door lock switch Left rear power window switch Memory function switch (w/ a45) Navigation display head (2001) Radio Right front door module (rfdm) (in front of right front door, near radio speaker) Right front power door lock switch Right front power window switch Right rear door module (rrdm) (in front of right rear door, near radio speaker) Right rear heated seat switch (w/ ka1) Right rear power door lock switch Right rear power window switch S500 (left front door trim harn, approx 57 cm from power door lock switch connector) S501 S601 (right front door trim harn, approx 25 cm from power window switch connector) S700 S701 (left rear door trim harn, inside left rear door) S800 (right rear door trim harn, inside right rear door) S801 Simple bus interface (sbi)
MEMORY SYSTEMS Memory Power Tilt & Power Telescopic Wiring Diagram for Cadillac Seville STS 1999 List of elements for Memory Power Tilt & Power Telescopic Wiring Diagram for Cadillac Seville STS 1999: 22 Battery Computer data lines system Data line G200 (left kick panel) Ground Hot at all times Mem t&t fuse 10a Out Pnk Pwr t&t fuse 30a Rear junction block Red S302 Steering column tilt/telescopic module (behind left side of dash) Tele act Tele pos Telescopic actuator Tilt act Tilt actuator Tilt pos Tilt/ telescopic switch Tilt/tele sw Memory Seat & Mirrors Wiring Diagram, with Power Lumbar, with Massage (2 of 2) for Cadillac Seville STS 1999 List of elements for Memory Seat & Mirrors Wiring Diagram, with Power Lumbar, with Massage (2 of 2) for Cadillac Seville STS 1999: 53 (left front door trim harn, in left front door, near power door lock switch conn) (left lumbar harn, in left seat back) 1 input 2 input Batt(+) Computer data lines Down Down ctrl Exit Forward/back Gnd Horizon pos sens in Horizontal Instrument panel integration module (center of dash) Interior lights system Left Left ctrl Left forward/ back Left front door module (in front of left front door, near radio speaker) Left front power window switch Left lumbar horizontal motor Left lumbar vertical motor Left mir Left mirror Left rear height Lumbar horizontal position sensor Lumbar vertical position sensor Memory function switch Memory set Mirror switches Motor Pnk Position sensor Radio Rear door modules Rear height Right Right ctrl Right front door module (in front of right front door, near radio speaker) Right mirror S303 (body harn, in left passenger compartment) S328 S329 S500 Serial data Set input Simple bus interface Solid state Steering column module (left side of dash) Tan Up ctrl Vertical Vertical pos sens in Memory Seat & Mirrors Wiring Diagram, with Power Lumbar, without Massage (1 of 2) for Cadillac Seville STS 1999 List of elements for Memory Seat & Mirrors Wiring Diagram, with Power Lumbar, without Massage (1 of 2) for Cadillac Seville STS 1999: 94 (left seat harn, under left seat, near forward/ backward position sensor) Backward ctrl Batt (+) C10 C11 C12 C13 C14 C15 C16 C318 Class 2 serial data line Computer data lines system D10 D11 D12 D13 D14 D15 D16 Down E tan Entire seat back Entire seat back in Entire seat forward Entire seat forward in Forward ctrl Front height Front height ctrl down Front height ctrl up Front height down Front height down in Front height pos sens Front height up Front height up input Fwr/bwd pos in G301 Gnd Headrest Headrest ctrl down Headrest ctrl up Headrest down Headrest down in Headrest pos sensor Headrest up Headrest up in Hot at all times J/b (under right front seat) Left front height Left headrest Left lumbar switch Left recline Left seat switch Lumbar ctrl down Lumbar ctrl in Lumbar ctrl out Lumbar ctrl up Lumbar down input Lumbar in input Lumbar in/out pos in Lumbar n inputup Lumbar out input Lumbar up/down pos in Mem t&t fuse 10a Memory seat module (under left front seat) Motor Out Pnk Position sensor Pwr seat circuit breaker 30a Rear height ctrl down Rear height ctrl up Rear height down Rear height down in Rear height pos sensor Rear height up Rear height up input Rear junction block Recline Recline back Recline back in Recline ctrl back Recline ctrl forward Recline forward Recline forward in Recline position sensor S313 S323 S324 S326 Sensors feed Sensors return Solid state Tan Memory Seat & Mirrors Wiring Diagram, with Power Lumbar, without Massage (2 of 2) for Cadillac Seville STS 1999 List of elements for Memory Seat & Mirrors Wiring Diagram, with Power Lumbar, without Massage (2 of 2) for Cadillac Seville STS 1999: 53 (left front door trim harn, in left front door, near power door lock switch conn) (left lumbar harn, in left seat back) 1 input 2 input Batt(+) Computer data lines Down Down ctrl Exit Forward/back Gnd Horizon pos sens in Horizontal Instrument panel integration module (center of dash) Interior lights system Left Left ctrl Left forward/ back Left front door module (in front of left front door, near radio speaker) Left front power window switch Left lumbar horizontal motor Left lumbar vertical motor Left mir Left mirror Left rear height Lumbar horizontal position sensor Lumbar vertical position sensor Memory function switch Memory set Mirror switches Motor Pnk Position sensor Radio Rear door modules Rear height Right Right ctrl Right front door module (in front of right front door, near radio speaker) Right mirror S303 (body harn, in left passenger compartment) S328 S329 S500 Serial data Set input Simple bus interface Solid state Steering column module (left side of dash) Tan Up ctrl Vertical Vertical pos sens in Memory Seat & Mirrors Wiring Diagram, without Power Lumbar Wiring Diagram (1 of 2) for Cadillac Seville STS 1999 List of elements for Memory Seat & Mirrors Wiring Diagram, without Power Lumbar Wiring Diagram (1 of 2) for Cadillac Seville STS 1999: 81 (left seat harn, under left seat, near forward/ backward position sensor) (pin d & e not used) A10 A11 A12 A13 A14 A15 A16 B10 B11 B12 B13 B14 B15 B16 Backward ctrl Batt (+) Class 2 serial data line Computer data lines system E tan E12 Entire seat back Entire seat back in Entire seat forward Entire seat forward in Forward ctrl Front height Front height ctrl down Front height ctrl up Front height down Front height down in Front height pos sens Front height up Front height up input Fwr/bwd pos in G301 Gnd Headrest Headrest ctrl down Headrest ctrl up Headrest down Headrest down in Headrest pos sensor Headrest up Headrest up in Hot at all times J/b (under right front seat) Left front height Left headrest Left recline Left seat switch Mem t&t fuse 10a Memory seat module (under left front seat) Motor Position sensor Pwr seat circuit breaker 30a Rear height ctrl down Rear height ctrl up Rear height down Rear height down in Rear height pos sensor Rear height up Rear height up input Rear junction block Recline Recline back Recline back in Recline ctrl back Recline ctrl forward Recline forward Recline forward in Recline position sensor S313 S323 S324 S326 Sensors feed Sensors return Solid state Tan Memory Seat & Mirrors Wiring Diagram, without Power Lumbar Wiring Diagram (2 of 2) for Cadillac Seville STS 1999 List of elements for Memory Seat & Mirrors Wiring Diagram, without Power Lumbar Wiring Diagram (2 of 2) for Cadillac Seville STS 1999: 47 (left front door trim harn, in left front door, near power door lock switch conn) 1 input 2 input Batt(+) Computer data lines Down ctrl Exit Forward/back Gnd Horizon pos sens in Horizontal Instrument panel integration module (center of dash) Interior lights system Left ctrl Left forward/ back Left front door module (in front of left front door, near radio speaker) Left front power window switch Left mirror Left mirror in Left rear height Memory function switch Memory set Mirror down Mirror left Mirror right Mirror switches Mirror up Motor Position sensor Radio Rear door modules Rear height Right ctrl Right front door module (in front of right front door, near radio speaker) Right mirror Right mirror in S303 (body harn, in left passenger compartment) S500 Serial data Set input Simple bus interface Solid state Steering column module (left side of dash) Tan Up ctrl Vertical Vertical pos sens in
POWER DISTRIBUTION Power Distribution Wiring Diagram (1 of 5) for Cadillac Seville STS 1999 List of elements for Power Distribution Wiring Diagram (1 of 5) for Cadillac Seville STS 1999: 74 A/c clu relay A/c/ clu fuse 15a Acc fuse 10a Acc relay Automatic transaxle B10 Battery Cellular telephone docking station Cr cont fuse 10a Cruise control module Dash integration module Dis fuse 20a Drl relay E10 Evaporative emission canister purge solenoid valve Exhaust gas recirulation valve Fog lamp relay Fog/ drl fuse 15a From underhood junction block (diagram 1 of 5) From acc relay (diagram 1 of 5) Front heated oxygen sensor Fuel injectors G101 Generator Hdhi bml fuse 10a Hdhi bmr fuse 10a Hdlo bml fuse 15a Hdlo bmr fuse 15a Hdlp hi bm relay Hdlp lo bm relay Headlamp dimmer switch Ign 1 fuse 10a Ign 1 relay Ignition control module Injr 1 fuse 10a Injr 2 fuse 10a J/b (right front of engine compt) J10 L10 Left high beam headlamp Left low beam headlamp M11 Mass air flow sensor Nca Outside moisture sensor Oxy sen a fuse 10a Oxy sen b fuse 10a P11 Pcm ign fuse 10a Pnk Post- converter heated oxygen sensor Power steering pressure switch Powertrain control module Prk lp relay Rear heated oxygen sensor Rear junction block Right high beam headlamp Right low beam headlamp S110 S111 Start 1 relay Start circuit breaker 30a Starter solenoid T10 To horn relay (diagram 2 of 5) To ign 1 relay (diagram 1 of 5) To ignition switch pin b (diagram 4 of 5) To ignition switch pin c (diagram 4 of 5) To rear junction block (diagram 2 of 5) Underhood junction block V10 Windshield wiper motor Windshield wiper washer switch Wsw fuse 30a Power Distribution Wiring Diagram (2 of 5) for Cadillac Seville STS 1999 List of elements for Power Distribution Wiring Diagram (2 of 5) for Cadillac Seville STS 1999: 82 (i/p harn, center of dash) s204 (left headlamp harn, near left headlamp) (left taillamp harn, near left taillamp) s402 (not used) (rear compt lid lamp harn, near right license lamp) (rear compt lid lamp harn, near right license lamp) s405 (rear compt lid lamp harn, near right license lamp) s407 (right headlamp harn, near right headlamp) (right taillamp harn, near right taillamp) s403 A10 Abs mot fuse 40a Abs sol fuse 30a Cool fan 1 fuse 30a Cool fan 1 relay Cool fan 2 fuse 30a Cool fan 2 relay Cool fan sp relay Dash integration module Dash intigeration module Dim r fuse 10a Electronic brake and traction control module From battery (diagram 1 of 5) From lp pk r g fuse (diagram 2 of 5) From prk lp relay (diagram 2 of 5) From underhood junction block (diagram 1 of 5) Frt ctsy relay G10 G11 Hazard switch assembly Horn fuse 15a Horn relay Htdst lr fuse 10a I/p fuse 15a Ignition key cylinder lamp Instrument cluster Instrument panel integration module Int lp fuse 10a Int lp relay L11 L12 Left front side marker lamp Left park/ turn lamp Left rear heated seat module Left tail lamp Left tail/ stop lamp Left taillamp resistor (left rear corner of trunk lid) License lamp Lp pk l fuse 15a Lp pk r fuse 15a M11 Multi- function lever Nav fuse 10a Navigation data processor Navigation display module Navigation relay Nca Pcm bat fuse 10a Powertrain control module Prk lp relay Q10 Rear compt relay center Rear junction block Red Right front side marker lamp Right park/ turn lamp Right tail lamp Right tail/ stop lamp Right taillamp resistor (right rear corner of trunk lid) Rr ctsy relay S10 S103 S104 S11 S304 S404 S406 Theft deterrent module To dim r fuse (diagram 2 of 5) To ign sw fuse (diagram 3 of 5) To nav fuse (diagram 2 of 5) Underhood junction block Underhood lamp Power Distribution Wiring Diagram (3 of 5) for Cadillac Seville STS 1999 List of elements for Power Distribution Wiring Diagram (3 of 5) for Cadillac Seville STS 1999: 71 (body harn, under left front seat) s302 (left seat harn, under left front seat) s326 (w/ bose) (w/o bose) A10 A12 Audio amp fuse 30a Audio fuse 30a Aux pwr fuse 20a Auxiliary power outlet B12 Battery thermistor Blower control module C/ltr fuse 20a C10 Cellular telephone module Cigar fuse 40a Cigar lighter Cigar relay Compact disc changer D10 D11 D12 Dash integration module Dim fuse 10a E10 E12 F12 From audio k fuse (diagram 3 of 5) From htdst lr i fuse (diagram 2 of 5) G200 Hazard switch assembly Htdst lf fuse 10a Htdst rf fuse 10a Htdst rr fuse 10a Hvac blo fuse 30a Ign sw fuse 15a J/b (left kick panel) Left adaptive lumbar module Left front heated seat module Left lumbar switch Left seat switch Mem t&t fuse 10a Memory seat module Navigation relay Nca Pnk Pwr t&t fuse 30a Radio Radio amplifier Rap fuse 20a Rap relay Rear cigar lighter Rear compartment relay center Rear integration module Rear junction block Red Remote keyless entry module Right adaptive lumbar module Right front heated seat module Right rear heated seat module Steering column tilt/ telescoping module Stop lamp/ btsi switch Stop lp fuse 15a Sunroof control module To ignition switch pin a (diagram 4 of 5) To pwr wdo circuit breaker (diagram 4 of 5) To stop lp fuse (diagram 3 of 5) Tsig/ haz fuse 15a Underhood junction block W/ auto contour Power Distribution Wiring Diagram (4 of 5) for Cadillac Seville STS 1999 List of elements for Power Distribution Wiring Diagram (4 of 5) for Cadillac Seville STS 1999: 73 (i/p harn, center of dash) s205 (left seat harn, under left front seat Acc Aldl fuse 10a Automatic level control compressor Automatic level control module B10 Body fuse 15a Continuously variable road sensing suspension module Cvrtd fuse 10a Damper relay Dash integration module Data link connector Drvrmdl fuse 10a E12 Elc fuse 30a Elc relay F/pmp fuse 20a F/pmp relay F/tnkdr rel relay F12 From acc relay (diagram 1 of 5) From ign 1 relay (diagram 1 of 5) From ign sw fuse (diagram 3 of 5) From rap l fuse (diagram 3 of 5) From rear m junction block (diagram 4 of 5) H10 Ignition switch L10 Left front door module Left lumbar switch Left massaging lumbar module Left rear door module Left seat switch Nca Nsbu fuse 10a Off Park neutral position switch Park relay Passmdl fuse 10a Pnk Prk brk a relay Prk brk b relay Prk brk fuse 20a Pwr seat circuit breaker 30a Pwr wdo circuit breaker 30a Rear junction block Red Reverse relay Right front door module Right lumbar switch Right massaging lumbar module Right rear door module Right rear heated seat module Right seat switch Rr blo fuse 10a Rr blo relay Rr defog fuse 40a Rr defog relay Rrdrmdl fuse 10a S312 S314 (right seat harn, under right front seat Start To aldl fuse (diagram 4 of 5) To ign 1 relay (diagram 5 of 5) To ign 3 relay (diagram 5 of 5) Trk rel relay V10 Valet switch W/ cvrss W/ mem seats W/o cvrss W/o mem seats Power Distribution Wiring Diagram (5 of 5) for Cadillac Seville STS 1999 List of elements for Power Distribution Wiring Diagram (5 of 5) for Cadillac Seville STS 1999: 73 (rear heated seat back harn, under rear seat) s310 A10 A11 Abs/tcc switch Air inlet actuator Automatic day/night mirror Automatic level control height sensor B10 B12 C10 C11 C12 C3 pnk Continuously variable road sensing suspension module Cruise switch D11 Driver's air mix actuator Driver's inflatable restraint side impact sensing module E11 Elc relay Electronic brake and traction control module Evaporative emission canister purge vent valve F11 F12 From ign 1 relay (diagram 5 of 5) From ignition switch pin b (diagram 4 of 5) From ignition switch pin c (diagram 4 of 5) From rear junction block (diagram 4 of 5) From rear junction block p (diagram 4 of 5) G304 H11 H12 Hvac fuse 10a Ign 1 fuse 10a Ign 1 relay Ign 3 relay Ign 3 rr fuse 10a Inflatable restraint sensing and diagnostic module Inside air temperature Instrument cluster Instrument panel integration module J/b (under left side of rear seat) Left adaptive lumbar module Left front heated seat module Left rear heated seat module Mode actuator Nca Orn Passenger's air mix actuator Passenger's inflatable restraint side impact sensing module Pnk Prk brk a relay Prk brk b relay Prndl lamp Rear blower switch Rear integration module Rear junction block Rear mode actuator Right adaptive lumbar module Right front heated seat module Right rear heated seat module Rr blo relay Rr defog relay S274 (hvac harn, right side of dash) Sir fuse 15a To ign 3 relay (diagram 5 of 5) Turn signal switch V10 Vent sol fuse 10a W/ auto countour W/ cvrss W/ heated seats W/o cvrss
POWER DOOR LOCKS Power Door Lock Wiring Diagram for Cadillac Seville STS 1999 List of elements for Power Door Lock Wiring Diagram for Cadillac Seville STS 1999: 56 (1999) (2000) (body harn, left side of passenger compt) (lf door harn, in lf door) (lr door harn, in lr door) (rf door harn, in rf door) (rr door harn, in rr door) Actuator dr Battery Class 2 data Computer data lines Door ajar Drvmdl fuse 10a E10 G200 (left kick panel) G203 (right kick panel) G300 (under left front seat) G301 (under right front seat) G304 (under left side of rear seat) Grd Ground Hot at all times Ign sw fuse 15a Interior lights system Key unlock Left front door actuator Left front door lock cyl switch Left front door module (front of left front door) Left front power door lock switch Left front power window switch Left rear door actuator Left rear door module (in lr door) Left rear power door lock switch Lock Memory systems Pass mdl fuse 10a Power windows system Pwr wdo circuit breaker 30a Rear fuse block Rear junction block Remote keyless entry (rke) module (under rear package shelf) Right front door actuator Right front door module (front of right front door) Right front power door lock switch Right rear door module (in rr door) Right rear power door lock switch Rrdr mdl fuse 10a S303 S500 S601 S800 Sbi Serial data Tan Tan a Unlock
POWER MIRRORS Electrochromic Mirror Wiring Diagram for Cadillac Seville STS 1999 List of elements for Electrochromic Mirror Wiring Diagram for Cadillac Seville STS 1999: 38 Automatic day-night mirror element Automatic day/night mirror Automatic day/night mirror element C/m C10 Compass display Compass/ mirror input Computer data lines system Data Direction input Exterior lights system Fluxgate sensor Forward light sensor G404 Ground Hot at all times Hot in run Ign3 rr fuse 10a J/b (left side of rear compartment) Left front door module (lfdm) (in front of left door, near radio speaker) Left mirror Logic Mirror input Nsbu fuse 10a Off Pnk Rear integration module (rim) (behind right side of rear seat back) Rear junction block (under left rear seat) Rearward light sensor Rev rly ctrl Reverse input Reverse relay S309 Sensor input Switch backlight Tint level output W/compass W/o compass
POWER SEATS Front Seat Heater Wiring Diagram for Cadillac Seville STS 1999 List of elements for Front Seat Heater Wiring Diagram for Cadillac Seville STS 1999: 42 (body harn, under right rear seat cushion) (under left front seat) driver heated seat module C2 c4 C3 f9 Driver heated seat back element Driver heated seat cushion element Driver heated seat switch E11 Front heated status Front passenger heated seat back element Front passenger heated seat cushion element Front passenger heated seat module (under right front seat) Front passenger heated seat switch G200 (left kick panel) G301 (under right front seat) Heated seat sw Heating element Hi heat Hot at all times Hot in on Htdst lf fuse 10a Htdst rf fuse 10a Ign 3 rr fuse 10a Inhibit ctrl Interior lights system J/b Lo heat Nca Nca controlled gnd nca temp sens input nca gnd Nca heater ctrl nca Nca ign nca batt (+) nca heated seat sw input nca low heat led feed nca gnd nca high heat led feed nca status output nca inhibit in Nca ign nca batt (+) nca htd seat sw input nca low heat led feed nca gnd nca hi heat led feed nca status output nca inhibit in Rear fuse block Rear heated seat module Rear integration module (behind right side of rear seat back) S306 S307 S313 S321 S650 Tan Thermistor Headrest, Recliner & 6-Way Power Seat Wiring Diagram for Cadillac Seville STS 1999 List of elements for Headrest, Recliner & 6-Way Power Seat Wiring Diagram for Cadillac Seville STS 1999: 33 Back Driver seat adjuster switch Driver seat front vertical adjuster motor Driver seat headrest motor Driver seat horizontal motor Driver seat rear vertical adjuster motor Driver seat recline motor E12 Entire seat F12 Front passenger seat adjuster switch Front passenger seat front vertical motor Front passenger seat headrest motor Front passenger seat horizontal motor Front passenger seat rear vertical motor Front passenger seat recline motor Front vertical Fwd G301 Headrest Hot at all times J/b (under right front seat) Nca Pwr seat circuit breaker 30a Rear fuse block Rear vertical Recline S312 (w/ lumbar) S313 S314 (w/ lumbar) S315 Solid state Tan Lumbar Wiring Diagram, with Auto Contour for Cadillac Seville STS 1999 List of elements for Lumbar Wiring Diagram, with Auto Contour for Cadillac Seville STS 1999: 30 (in left front seat back) driver seat adaptive lumbar module Adaptive pump ctrl Auto/ on Driver seat lumbar switch E11 Front passenger seat adaptive lumbar module (in right front seat back) G302 Hot at all times Hot at on Ign3 rr fuse 10a J/b (below center console) Left lumbar pump motor Mem t & t fuse 10a Nca Nca auto input Nca batt (+) Nca gnd Nca ign input Nca lumbar in input Nca lumbar out output Nca off inpu Off Out Pump gnd Rear fuse block Right lumbar pump motor Right lumbar switch S302 S313 S315 Lumbar Wiring Diagram, with Massage for Cadillac Seville STS 1999 List of elements for Lumbar Wiring Diagram, with Massage for Cadillac Seville STS 1999: 29 Battery Dn mtr Down F12 G301 Ground Hot at all times J/b (under right front seat) Motor feed Out Pnk Pnk a Pwr seat circuit breaker 30a Rear junction block Red Right front lumbar massage module (in seat back) Right lumbar horizontal motor Right lumbar switch Right lumbar vertical motor Right lumbar vertical position sensor S314 S315 Sens feed Sens in Sens rtn Solid state Tan Tan a Up mtr Lumbar Wiring Diagram, without Auto Contour for Cadillac Seville STS 1999 List of elements for Lumbar Wiring Diagram, without Auto Contour for Cadillac Seville STS 1999: 23 Down Driver seat front vertical motor Driver seat horizontal motor Driver seat lumbar switch E12 F12 Front passenger seat front vertical motor Front passenger seat horizontal motor Front passenger seat lumbar switch G301 Hot at all times J/b (under right front seat) Out Pnk Pnk a Pwr seat circuit breaker 30a Rear fuse block S312 S313 S314 S315 Solid state Tan Rear Seat Heater Wiring Diagram for Cadillac Seville STS 1999 List of elements for Rear Seat Heater Wiring Diagram for Cadillac Seville STS 1999: 51 (body harn, under right rear seat cushion) (in center of left rear seat) left rear heated seat module (rear heated seat back harn, under rear seat) C1 f11 Computer data lines system D12 c3 Driver heated seat module (under left front seat) Front passenger heated seat module (under right front seat) G304 (under left side of rear seat) Gnd Heated seat sw Heated seat sw input Heating element Hi heat High heat led feed Hot at all times Hot in on Htdst lr fuse 10a Htdst rr fuse 10a Ign 3 rr fuse 10a Inhibit ctrl Interior lights system J/b Left rear door module (in front of left rear door, near radio speaker) Left rear heated seat back element Left rear heated seat cushion element Left rear heated seat switch Lo heat Low heat led feed Lr heated seat ctrl Nca Nca controlled gnd nca temp sens input nca gnd Nca heater ctrl nca Nca ign nca batt (+) nca heated seat sw input nca gnd nca inhibit in Nca inhibit in Pnk Rear fuse block Rear integration module (behind right side of rear seat back) Right rear door module (in front of right rear door, near radio speaker) Right rear heated seat back element Right rear heated seat cushion element Right rear heated seat module (in center of right rear seat) Right rear heated seat switch Rr heated seat ctrl S307 S310 S311 S701 (left rear door trim harn, in left rear door) S800 (right rear door trim harn, in right rear door) Simple bus interface Thermistor
POWER TOP/SUNROOF Power Top/Sunroof Wiring Diagrams for Cadillac Seville STS 1999 List of elements for Power Top/Sunroof Wiring Diagrams for Cadillac Seville STS 1999: 32 Battery Close Closed Express in Express- open G405 Ground Hot at all times J/b (right side of rear compartment) Limit sw Limit switch Motor ctrl Navigation system Nca Not used Open Overhead console Pnk Power sun roof slide switch Power sun roof vent switch Rap ctrl Rap fuse 20a Rap relay Rear integration module (rim) (behind right side of rear seat back) Rear junction block (under left rear seat) Red Slide close Slide open Sun roof control module (above headliner, near rear of sun roof) Sun roof motor (above headliner, near rear of sun roof) Vent close Vent open
POWER WINDOWS Power Window Wiring Diagram for Cadillac Seville STS 1999 List of elements for Power Window Wiring Diagram for Cadillac Seville STS 1999: 52 (body harn, approx 14cm from i8 pin seat harn conn breakout) (body harn, approx 70cm from engine compt bulkhead) (left front door harn, approx s500 57 cm from lock switch) (left rear door (right front door harn, approx 33cm from window switch conn) (right rear door harn, approx 18cm from trim panel conn) Battery (b+) Bus interface Bus interface bus interface C c c Data line Down Down down Drv mod fuse 10a Express input From trim panel conn) G2o3 (right kick panel) G2oo (left kick panel) G3o1 (under right front seat) G3oo (under left front seat) Ground Ground ground Harn, approx 22cm Hot at all times J/b Left front door module Left front power window motor Left front power window switch Left rear door module Left rear power window motor Left rear power window switch Mirror feed Mirror return Mirrors system Motor control Pass module fuse 10a Pnk Powertrain control module (left front of engine compt) Pwr wdo circuit breaker 30a Rear door module fuse 10a Rear fuse block (under left rear seat) Right front door module Right front power window motor Right front power window switch Right rear door module Right rear power window motor Right rear power window switch S200 S303 S600 S701 S800
RADIO
SHIFT INTERLOCKS Park Brake Release Wiring Diagram for Cadillac Seville STS 1999 List of elements for Park Brake Release Wiring Diagram for Cadillac Seville STS 1999: 31 A1 c2 A10 c2 A3 c1 B1 c2 B4 c2 B7 c1 C1 a1 C1 b8 C2 a11 C2 b3 G405 Hot at all times Hot in run Hot in run or start Ign Ign 1 fuse 12 10a Ign sw fuse 20 15a J/b (right side of rear compartment) Park brake relay a Park brake relay b Park brake release solenoid (under left side of dash, on park brake pedal) Park brake sol a ctrl Park brake sol b ctrl Pnk Power distribution system Prk brk fuse 20a Rear integration module (behind right side of rear seat back) Rear junction block (under left rear seat) Red Solenoid a Solenoid b Shift Interlock Wiring Diagram for Cadillac Seville STS 1999 List of elements for Shift Interlock Wiring Diagram for Cadillac Seville STS 1999: 18 (left kick panel) A11 Acc Body control module Computer data lines G200 Hot at all times Ignition switch Lock Nsbu fuse 10a Park relay Rear integration module (rim) (behind right of rear seat) Rear junction block Run S318 Shift interlock solenoid (on shifter) Start Stop lamp/ btsi switch (near top of brake pedal)
STARTING/CHARGING Charging Wiring Diagram for Cadillac Seville STS 1999 List of elements for Charging Wiring Diagram for Cadillac Seville STS 1999: 18 (not used) (under right side of rear seat) B12 Bat Battery Battery thermistor (on battery) Dim fuse 10a G303 Generator Generator terminal f input generator terminal f input Ground distribution system Hot at all times Power dist. Power distribution system Powertrain control module (below air cleaner) Rear junction block (under left rear seat) Red Starting circuit Starting Wiring Diagram for Cadillac Seville STS 1999 List of elements for Starting Wiring Diagram for Cadillac Seville STS 1999: 28 (dim) module (near blower motor) (under right side of rear seat) Accy Battery Bulb test Charging circuit G303 Ground distribution system Hold- in coil Hot at all times Ign pos volt Ign sw fuse 15a Ignition switch Lock Off Park/ neutral position switch (on trans.) Pass key iii theft deterrent module (behind left side of dash) Power distribution system Pull- in coil Rear junction block Run Start Start circuit breaker 30a Start relay Starter enable relay control Starter motor Starter solenoid Underhood junction block
SUPPLEMENTAL RESTRAINTS Supplemental Restraint Wiring Diagram for Cadillac Seville STS 1999 List of elements for Supplemental Restraint Wiring Diagram for Cadillac Seville STS 1999: 36 (left seat harn, under left front seat) s313 Computer data lines Driver frt hi Driver frt lo Driver inflatable restraint side impact inflator module (left side of seatback) Driver inflatable restraint side impact sensing module (at base of left "b" pillar) Driver seat belt pretensioner Drvr pretnsn hi Drvr pretnsn lo Drvr sism diag G301 (under right front seat) Ground High Hot in run and start Ign pos volt Inflatable restraint i/p module (upper right side of dash) Inflatable restraint sensing and diagnostic module (under driver seat) Inflatable restraint steering wheel module (on steering wheel) Inflatable restraint steering wheel module coil Low Nca Pass frt hi Pass frt lo Pass pretnsn hi Pass pretnsn lo Pass sism diag Passenger inflatable restraint side impact inflator module (right side of seatback) Passenger inflatable restraint side impact sensing module (at base of right "b" pillar) Passenger seat belt pretensioner Rear junction block (under left rear seat) Seat belt sw Seat belt switch Serial data line Shorting bar Sir fuse 15a Sism diagnostic
TRANSMISSION A/T Wiring Diagram, 4T80-E for Cadillac Seville STS 1999 List of elements for A/T Wiring Diagram, 4T80-E for Cadillac Seville STS 1999: 75 1-2 shift sol 1-2 shift sol ctrl 2-3 shift sol 2-3 shift sol ctrl A d4,d3 A/t iss (hi) A/t iss (lo) Abs sw Abs/ tcc switch (top of brake pedal) Acc Automatic transaxle (4t80-e) Automatic transaxle fluid pressure manual valve position switch Automatic transaxle fluid temperature sensor Automatic transaxle input shaft speed sensor Battery Computer data lines system Cruise control switch & rear integration relay Cruise control system Dash integration module & pass-key iii theft deterrent module Data class ii E10 Ect sensor gnd Ect sensor signal Engine coolant temperature sensor (right rear corner of engine) G119 (lower right front of engine near power steering rack) Hot at all times Hot in run or start Ign 1 fuse 10a Ignition Ignition feed input Ignition switch Instrument cluster Instrument cluster & turn signal switch Lock Malfunction indicator lamp ctrl Mil ctrl P,r,n,d4 b P,r,n,d4,d3 Park/ neutral position switch (on transaxle below throttle body) Pcm batt fuse 10a Pcm ground Pcm ign fuse 10a Pnk Powertrain control module (below engine air cleaner assembly) Press ctrl sol (hi) Press ctrl sol (lo) Pressure control sol Rear fuse block Red Rev Run S205 (dash harn, center of dash, 95 cm from radio connection) Start Tan Tcc pwm sol Tcc pwm sol ctrl Tcc switch Tcc/brake sw in Tft sensor (hi) Tft sensor (lo) Throttle position sensor Tp +5v reference Tp sensor gnd Tp sensor signal Tr sw in-a Tr sw in-b Tr sw in-c Tr sw in-p Trans range in-a Trans range in-b Trans range in-c Underhood fuse block Vehicle speed sensor (on transaxle case extension) Vss (hi) Vss (lo)
TRUNK, TAILGATE, FUEL DOOR Trunk & Fuel Door Release Wiring Diagram for Cadillac Seville STS 1999 List of elements for Trunk & Fuel Door Release Wiring Diagram for Cadillac Seville STS 1999: 34 A10 A9 c2 Aldl fuse 10a Body fuse 15a C3 d9 Computer data lines system F/tnkdr rel relay Fuel door release Fuel door release solenoid (left of rear compt) Fuel door release switch Fuel dr rel out G200 G404 H10 Hot at all times Input Instrument panel integration module (ipm) (behind center of dash, above radio) J/b (left kick panel) J/b (left side of rear compt) K10 L10 N10 Output Pnk Rear compartment lid release solenoid (center rear of rear compt lid) Rear compt lid relase switch Rear integration module (rim) (behind right side of rear seat back) Rear junction block (under left rear seat) Release switch assembly Rr compt lid rel Rr compt lid rel out S212 Trk relay Valet switch
WARNING SYSTEMS Warning System Wiring Diagrams for Cadillac Seville STS 1999 List of elements for Warning System Wiring Diagrams for Cadillac Seville STS 1999: 38 A11 A12 B12 Base Belt sw input Bose Chime control Chime input Chime return Class 2 data Computer data lines system Dash integration module (dim) (right side of dash, near blower motor) F11 F12 F13 G200 (left kick panel) G203 (right kick panel) G301 (under right front seat) Ground Headlamp switch Inflatable restraint sensing and diagnostic module (sdm) (under right front seat) Instrument panel integration module (ipm) (behind center of dash) Key in input Key-in-ignition switch Left front door jamb switch Left front door module (front of left front door) Left front seat belt switch (in seat belt buckle) Lf dr open Nca Park Park lp input Radio Radio amplifier (behind left side of rear seat back) S203 S211 S313 Shield ground Tan
WIPER/WASHER Wiper/Washer Wiring Diagram for Cadillac Seville STS 1999 List of elements for Wiper/Washer Wiring Diagram for Cadillac Seville STS 1999: 31 (not used) 150k 24k 270k 39k 680k 82k Acc fuse 10a Dash integration module (right side of dash) G101 G101 (right front of engine compt) G404 Hot in acc or run J/b (left side of rear compt) J/b (right front of of engine compt) Max Min Mist Nca Off Outside moisture sensor (near rear- view mirror) Red S309 Underhood junction block (right side of engine compt) Wash Washer switch Wind- shield washer pump Wind- shield wiper motor Windshield wiper/ washer switch Wiper switch Wsw fuse 30a
