POWER DISTRIBUTION — Cadillac STS 2005 — SYSTEM WIRING DIAGRAMS

POWER DISTRIBUTION

Power Distribution Wiring Diagram (1 of 7) for Cadillac STS 2005

List of elements for Power Distribution Wiring Diagram (1 of 7) for Cadillac STS 2005:

• (3.6l)
• (3.6l: engine harn, 15cm from fuel injector 5 conn) (4.6l engine harn, 14 cm from fuel injector 7 conn) s101
• (3.6l: engine harn, 30 cm from ebcm connector) (4.6l: engine harn, 25 cm from brake pressure sensor connector)
• (4.6l)
• (ignition coil harn, 30 cm from ignition coil module 1 conn) s142
• (not used)
• (right front side of engine compartment) underhood fuse block
• 3.6l
• 36 cm from tcm connector)
• 4.6l
• Automatic headlamp dimming fuse 10a
• Automatic headlamp dimming relay
• Battery
• Blower relay
• C1 h
• Camshaft position (cmp) actuator solenoid exhaust bank 1
• Camshaft position (cmp) actuator solenoid exhaust bank 2
• Camshaft position (cmp) actuator solenoid intake bank 1
• Camshaft position (cmp) actuator solenoid intake bank 2
• Data link connector (dlc)
• Ebcm fuse 50a
• Ecm/tcm fuse 10a
• Electronic brake control module (ebcm)
• Engine control
• Engine control module (ecm)
• Evaporative emission (evap) canister purge solenoid valve
• Evaporative emission (evap) canister purge solenoid valve (4.6l)
• Front blower fuse 40a
• Fuel injector
• Fusible link
• Generator
• Heated oxygen sensor (ho2s) bank 1 sensor 1
• Heated oxygen sensor (ho2s) bank 2 sensor 1
• Hfv6 ecm fuse 15a
• Hi speed fan fuse 30a
• Hi speed fan relay
• Ignition coil/ module
• Ignition coil/ module 1
• Ignition coil/ module 3
• Ignition coil/ module 5
• Instrument panel cluster (ipc)
• Instrument panel module (ipm)
• Intake manifold tuning valve (imtv) solenoid
• Ipm/ aldl fuse 10a
• Low speed fan fuse 30a
• Low speed fan relay
• Main relay
• Module (ecm) (4.6l)
• Odd inj/ coil fuse 15a
• Pnk/ (engine harn, 14 cm from fuel injector 7 conn) s102
• Pre o2/ cam fuse 15a
• R14
• R19
• R20
• R39
• R40
• R47
• R48
• R49
• R50
• R51
• R52
• Red
• Remote control door lock receiver (rcdlr)
• S/p fan relay
• S109
• S118
• S127 (engine poa harn, 18 cm from ignition coil 1 conn)
• S136
• Spare fuse
• Starter
• To underhood fuse block (horn relay) (diagram 2 of 7)
• To underhood fuse block (post o2 fuse, 10a) (diagram 3 of 7)
• Transmission control module (tcm)
• V8 ecm fuse 10a
• Volt check fuse 10a

Power Distribution Wiring Diagram (2 of 7) for Cadillac STS 2005

List of elements for Power Distribution Wiring Diagram (2 of 7) for Cadillac STS 2005:

• (right front side of engine compartment) underhood fuse block
• (w/ hid headlamps)
• A/c compressor clutch relay
• Accessory relay
• Ccp fuse 10a
• Comp clutch fuse 10a
• Distance sensing cruise control module (w/ auto adaptive cruise control)
• Fog lamp fuse 15a
• Fog lamp relay
• From instrument panel module (diagram 4 of 7)
• From underhood fuse block a (main relay) (diagram 1 of 7)
• G104 (on right front frame rail, near bumper bracket)
• Hdlp washer circuit breaker 30a
• Head up display (hud)
• Headlamp leveling module
• Headlamp washer fluid pump fluid
• Headlamp washer fluid pump relay
• High beam relay
• Horn fuse 15a
• Horn relay
• Hud fuse 10a
• Hvac control module
• L rear fuse 60a
• Low beam relay
• Outside moisture sensor
• Park lamp relay
• R rear fuse 60a
• R31
• R32
• R36
• R37
• R56
• Rain sensor hdlp fuse 7.5a
• S411
• Spare fuse
• Spare relay
• Tilt/ telescope switch
• Tilt/lk lmp/clm relay coils fuse 10a
• Tire pressure monitor module
• To left rear fuse block (alc relay fuse, 10a) (diagram 5 of 7)
• To left rear fuse block (driver door module fuse, 10a) (diagram 5 of 7)
• To right rear fuse block (ign 1 relay) (diagram 7 of 7)
• To right rear fuse block (power windows motor circuit breaker, 30a) (diagram 6 of 7)
• Windshield wiper/ washer module
• Windshield wiper/ washer switch
• Wpr mod fuse 30a
• Wpr sw vics fuse 7.5a

Power Distribution Wiring Diagram (3 of 7) for Cadillac STS 2005

List of elements for Power Distribution Wiring Diagram (3 of 7) for Cadillac STS 2005:

• (3.6l: engine harn, 52 cm from ho2s bank 1 sensor 2 conn) (4.6l: engine harn, 34 cm from c102) s104
• (engine harn, 16 cm from fuel injector 8 conn) s103
• (engine harn, 39 cm from brake pressure sensor conn)
• (engine poa harn, 25 cm from ignition coil 2 conn) s119
• (ignition coil harn, 36 cm from ignition coil module 2 conn) s131
• (in passenger compt, behind right kick panel)
• (not used)
• (right front side of engine compartment) underhood fuse block
• 3.6l
• 4.6l
• A/c comp clutch relay
• Auxiliary power outlet
• Engine control module (ecm)
• Even inj/ coils fuse 15a
• Fog lamp relay
• From right rear fuse block (ignition 1 fuse, 10a) (diagram 7 of 7)
• From underhood fuse block b (pre o2/cam fuse, 15a) (diagram 1 of 7)
• Front auxiliary power outlet
• Fuel injector (4.6l)
• Fuel injector 2
• Fuel injector 4
• Fuel injector 6
• G104 (on right front frame rail, near bumper bracket)
• G201
• Heated oxygen sensor (ho2s) bank 1 sensor 2
• Heated oxygen sensor (ho2s) bank 2 sensor 2
• 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)
• Outlet fuse 30a
• Pnk
• Post fuse 10a
• R43
• R44
• R45
• R46
• R55
• R64
• Rear auxiliary power outlet
• S105
• S137
• S212
• S311
• S312
• Spare fuse
• Starter fuse 30a
• Starter relay
• Tcm/ipc/ ecm fuse 15a
• To underhood fuse block (wash noz/aqs fuse, 10a) (diagram 4 of 7)
• Transmission control module (tcm)
• Underhood fuse block (right front side of engine compt)

Power Distribution Wiring Diagram (4 of 7) for Cadillac STS 2005

List of elements for Power Distribution Wiring Diagram (4 of 7) for Cadillac STS 2005:

• (not used)
• Abs fuse 15a
• Accessory voltage
• Accy ind cntrl
• Accy led sig
• Air quality sensor
• Backlight lmp cntrl
• Ccp fuse 10a
• Electronic brake control module (ebcm)
• From underhood fuse block (ign 1 relay) (diagram 3 of 7)
• Ground
• Hvac control module
• Ign 1 voltage
• Ign mode sw ref vlt
• Ignition mode switch
• Instrument panel module (right side of dash, behind glove box)
• Interior lights system
• Left heated washer nozzle
• Maf fuse 10a
• Maf/ iat sensor (3.6l)
• Mode control
• Mode control b/u
• Mode voltage
• Off in cntrl
• Off led sig
• Pnk
• Rear defog relay
• Remote control door lock receiver (under rear speaker shelf)
• Right heated washer nozzle
• Right rear fuse block (under right side of rear seat)
• Run ign 3 voltage
• Spare fuse
• Splice pack sp201
• Splice pack sp300
• Start ind cntrl
• Start led sig
• Starter relay
• Starter relay fuse 10a
• To accessory relay (diagram 2 of 7)
• To ign 1 relay (diagram 7 of 7)
• To ign 3 relay (diagram 6 of 7)
• Underhood fuse block (right front of engine compartment)
• Voltage b/u
• Wash noz/ aqs fuse 10a

Power Distribution Wiring Diagram (5 of 7) for Cadillac STS 2005

List of elements for Power Distribution Wiring Diagram (5 of 7) for Cadillac STS 2005:

• (in driver door harn, 54 cm from c500) s502
• (under left side of rear seat) left rear fuse block
• A/t shift shift lever assembly
• Airbag fuse 10a
• Alc relay fuse 30a
• Amp fuse 30a
• Audio amplifier
• Automatic level control (alc) compressor
• Automatic leveling control (alc) compressor relay
• Dpm fuse 10a
• Driver adjuster seat switch
• Driver back cooled seat blower motor
• Driver cushion cooled seat blower motor
• Driver door module (ddm)
• Driver door module fuse 10a
• Driver lumbar adjuster switch
• Elc solenoid fuse 30a
• Electronic suspension control (esc) module
• Electronics suspension control (esc) module fuse 25a
• 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)
• Inflatable restraint sensing & diagnostic module (sdm)
• Joint connector
• Left front door subwoofer speaker
• Left position lamp relay
• Left rear door module (lrdm)
• Left rear fuse block (ign 3 relay) (diagram 6 of 7)
• Memory seat module (msm)
• Nca
• Position lamps fuse 10a
• R15
• R18
• R27
• R29
• R31
• R32
• R36
• R37
• Rear door module fuse 15a
• Rear speaker (subwoofer) fuse 15a
• Rear subwoofer speaker
• Rev lamp relay
• Reverse lamp fuse 10a
• Right position lamp relay
• Right rear door module (rrdm)
• S12
• S13
• S14
• S20
• S21
• S22 (not used)
• S23
• Spare fuse
• Splice pack
• Standing lamp relay
• Theft/ shifter fuse 10a
• Trk dr rel sol relay
• Trunk door/ valet fuse 7.5a
• Tv antenna module
• Tv/vics fuse 10a
• W/ infotainment system 010
• W/ infotainment system 012, 014 & 015

Power Distribution Wiring Diagram (6 of 7) for Cadillac STS 2005

List of elements for Power Distribution Wiring Diagram (6 of 7) for Cadillac STS 2005:

• (body harn, 58 cm from right rear fuse block c1) s302
• (body harn, 86 cm from g306) s303
• (in driver seat harn, 20 cm from driver seat adjuster motor assembly conn)
• (in passenger seat harn, 32 cm from c307) s355
• (not used)
• (under right side of rear seat) right rear fuse block
• A/t shift shift lever assembly
• Automatic leveling control (alc) compressor relay
• Canister vent fuse 10a
• Climate control seat module
• Digital radio receiver
• Driver window motor
• Evaporative emissions (evap) canister vent solenoid valve
• From instrument panel module (via splice pack sp300, pin 31) (diagram 4 of 7)
• From left rear fuse block (trunk door/ valet fuse, 7.5a) (diagram 5 of 7)
• From underhood fuse block (r rear fuse, 60a) (connector c3, pin 2) (diagram 2 of 7)
• Front passenger window motor
• Fuel pump fuse 15a
• Fuel pump relay
• G402 (in rear compt, to rear of left rear shock tower)
• Ign 3 fuse 10a
• Ign 3 relay
• Left front seat belt retractor
• Left rear fuse block (under left side of rear seat)
• Left rear window motor
• Memory seat module (msm)
• Nca
• Passenger back cooled seat blower motor
• Passenger climate control seat module
• Passenger cushion cooled seat blower motor
• Passenger lumbar adjuster switch
• Passenger seat adjuster switch
• Power seats circuit breaker 30a
• Power window circuit breaker 30a
• R12
• R21
• R22
• R23
• R25
• R37
• Radio
• Radio/ onstar fuse 10a
• Rear heated seat control module
• Rear heated seat fuse 20a
• Rear integration module (rim)
• Rf htd st/ s-band fuse 20a
• Right front seat belt retractor
• Right rear window motor
• Right turn signal fuse 10a
• S15
• S16
• S17
• S352
• Spare fuse
• Splice pack
• Stop lamp relay
• Stop lamps fuse 10a
• Sunroof control module
• Sunroof fuse 20a
• Vehicle communication interface module (vcim)
• W/ power lumbar control seats
• W/o power lumbar control seats

Power Distribution Wiring Diagram (7 of 7) for Cadillac STS 2005

List of elements for Power Distribution Wiring Diagram (7 of 7) for Cadillac STS 2005:

• (in passenger door harn, 34 cm from front passenger window motor conn) s602
• (in steering column harn) s221
• After boil fuse 10a
• After boil relay (4.6l)
• Air bag fuse 10a
• From instrument panel module (via splice pack sp201, pin 8) (diagram 4 of 7)
• From underhood fuse block (r rear fuse, 60a) (diagram 2 of 7)
• Front passenger door module (fpdm)
• Fuse 7.5a
• G401 (in rear compt, to rear of right rear shock tower)
• Heated steering wheel control module
• Htd stg/ clm fuse 15a
• Ign 1 fuse 10a
• Ign 1 relay
• Inflatable restraint sensing & diagnostic module (sdm)
• Inflatable restraint steering wheel module coil
• Inside rear view mirror
• Int lamp relay
• Interior lamp fuse 10a
• Left turn signal fuse 10a
• Nca
• Pnk
• R16
• R17
• R21
• R22
• R23
• R25
• R26
• R27
• Rear defog fuse 40a
• Rear defog relay
• Rear integration module (rim)
• Rear object sensor control module
• Right front door subwoofer speaker
• Right rear fuse block (under right side of rear seat)
• Rim fuse 10a
• Rt frt dr mod fuse 10a
• S10 (not used)
• S11
• S22
• S23
• S25
• S3 (not used)
• Splice pack
• Steering column lock control module
• Theft deterrent alarm siren
• To underhood fuse block (a/c comp clutch relay) (diagram 3 of 7)
• W/ infotainment system 010
• W/ infotainment system 012, 011, 014 & 015