ENGINE PERFORMANCE – Cadillac CTS 2008 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

3.6L VIN 7

3.6L VIN 7, Engine Performance Wiring Diagram (1 of 5) for Cadillac CTS 2008

List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (1 of 5) for Cadillac CTS 2008:

• (in engine harness, near branch for brake booster pump relay)
• (in engine harness, near branch for underhood fuse block)
• (in engine harness, near branch for underhood fuse block) j185
• (in fuel tank harness, near inline con- nector x420) j400
• (on clutch master cylinder) clutch pedal position (cpp) sensor
• (on front right valve cover)
• (on vehicle underbody, above rear differential) evaporative emission (evap) canister vent solenoid valve
• (top right of engine) g132
• (under vehicle, right side of transmission) back up lamp switch
• 5v ref 2
• 5v ref 3
• A/c refrigerant pressure sensor (near left front strut tower, on a/c refrigerant line)
• Air conditioning system
• App sens 1 sig
• App sens 2 sig
• Batt+ volt
• Clutch rly ctrl
• Cnstr/ vent fuse 10a
• Computer data lines system
• Cooling fans system
• Ecm fuse 15a
• Ecm/ tcm ign fuse 15a
• Engine control module (ecm)
• Exterior lights system
• Fan rly ctrl
• Fuel level sens
• Fuel level sensor
• Fuel pump & sender assembly (in fuel tank)
• Fuel tank pressure sensor (in fuel tank)
• G132 (top right of engine)
• G401 (at right rear shock tower)
• Gnd
• H2os hi sig
• Heated oxygen sensor bank 1 sensor 2 (on left exhaust pipe, before catalytic converter)
• Heated oxygen sensor bank 2 sensor 2 (on right exhaust pipe, after catalytic converter)
• Hi volt ctrl cyl 3
• Ho2s htr lo ctrl
• Ho2s lo sig
• Hot at all times
• Hot w/ ign main relay energized
• Ign 1 volt
• J181
• J182
• J187
• Lamp sw sig
• Lo ref
• Maf sens sig
• Main rly ctrl
• Mil ctrl
• Nca
• Pnk
• Press sens sig
• Rear fuse block (right rear of luggage compt)
• Rly ctrl
• Sens lo ref
• Sens sig
• Sens sig position
• Sens volt ref 1
• Serial data bus+
• Serial data bus-
• Starting/ charging system
• Str rly coil ctrl
• Sw sig/sply volt
• Tan
• Temp sens sig
• Underhood fuse block (right front of engine compt)
• Vent sol ctrl
• Vss hi sig
• Wakeup serial data

3.6L VIN 7, Engine Performance Wiring Diagram (2 of 5) for Cadillac CTS 2008

List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (2 of 5) for Cadillac CTS 2008:

• Acc
• Accelerator pedal position (app) sensor (above accelerator pedal)
• Body control module (bcm)
• Camshaft position (cmp) sensor (exhaust bank 1) (front of left cylinder head)
• Camshaft position (cmp) sensor (exhaust bank 2) (front of right cylinder head)
• Camshaft position (cmp) sensor (intake bank 1) (front of right cylinder head)
• Camshaft position (cmp) sensor (intake bank 2) (front of left cylinder head)
• Computer data lines system
• Ecm fuse 10a
• Emis 1 fuse 15a
• Emis 2 fuse 15a
• Even coils fuse 15a
• Fuel pump fuse 20a
• Fuel pump relay
• G132 (top right of engine)
• G401 (at right rear shock tower)
• Gmlan data
• Hot at all times
• Ignition switch
• J183
• J260 (w/o remote start)
• Mass air flow sensor (maf) & intake air temperature (iat) sensors (left front of engine compt)
• Odd coils fuse 15a
• Off
• Pnk
• Pwr/ trn relay
• Run
• Start
• Tan
• Underhood fuse block (right front of engine compt)
• Vehicle speed sensor (on right rear of transmission)

3.6L VIN 7, Engine Performance Wiring Diagram (3 of 5) for Cadillac CTS 2008

List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (3 of 5) for Cadillac CTS 2008:

• (center rear of intake manifold) intake manifold tuning (imt) solenoid valve
• (front of left cylinder head) camshaft position (cmp) actuator solenoid (exhaust bank 2)
• (front of right cylinder head) camshaft position (cmp) actuator solenoid (exhaust bank 1)
• (front of right cylinder head) camshaft position (cmp) actuator solenoid (intake bank 1)
• (top right side of engine) evaporative emission (evap) canister purge solenoid valve
• Camshaft position (cmp) actuator solenoid (intake bank 2) (front of left cylinder head)
• Computer data lines system
• Crankshaft position (ckp) sensor (right side of engine)
• Driver information center (dic)
• Engine oil pressure (eop) sensor (in oil filter housing)
• G132 (top right of engine)
• Gmlan lo spd
• Gnd d
• Heated oxygen sensor bank 1 sensor 1 (on left exhaust pipe, before catalytic converter)
• Imtv ctrl
• Instrument panel cluster (ipc)
• J142
• Lo spd gmlan
• Logic
• Low engine oil pressure ind
• Malfunction ind lamp (mil)
• Nca
• Position sig
• Rly fused sply
• Tan

3.6L VIN 7, Engine Performance Wiring Diagram (4 of 5) for Cadillac CTS 2008

List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (4 of 5) for Cadillac CTS 2008:

• (front center of engine) throttle body
• (in ignition coil/ module harness, near inline connector x132)
• (top of right cylinder bank) ignition coil 2
• (top of right cylinder bank) ignition coil 4
• (top of right cylinder bank) ignition coil 6
• Ect sens sig
• Engine control module (ecm) (on front right valve cover)
• Engine coolant temperature (ect) sensor (side of left cylinder head)
• G131 (left rear of engine)
• Heated oxygen sensor bank 2 sensor 1 (on right exhaust pipe, after catalytic converter)
• Ho2s htr lo ctrl
• Ho2s lo ref
• Ho2s ref volt
• Htr lo ctrl
• Ic 2 ctrl
• Ic 4 ctrl
• Ic 6 ctrl
• Imt position sig
• Knock sens 2 sig
• Knock sens sig
• Lo ref
• Nca
• Oil press sens
• Spark plug
• Tan
• Tp sens 1 sig
• Tp sens 2 sig

3.6L VIN 7, Engine Performance Wiring Diagram (5 of 5) for Cadillac CTS 2008

List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (5 of 5) for Cadillac CTS 2008:

• (in fuel injector harness, near inline connector x121) j151
• (in ignition coil/module harness, near inline connector x131) j165
• (on right side of engine block) knock sensor (ks) 1
• (top of left cylinder bank) fuel injectors 1, 3 & 5
• 5v ref 1
• 5v ref 2
• 5v ref 3
• Ckp sens sig
• Engine control module (ecm) (on front right valve cover)
• Exhaust sens
• Exhaust sens (2)
• Exhaust sol (1)
• Exhaust sol (2)
• Fuel injectors 2, 4 & 6 (top of right cylinder bank)
• G130 (rear of right cylinder head)
• Gen duty cycle sig
• Gen turn on sug
• Hi volt ctrl cyl 1
• Hi volt ctrl cyl 2
• Hi volt ctrl cyl 3
• Hi volt ctrl cyl 4
• Hi volt ctrl cyl 5
• Hi volt ctrl cyl 6
• Ic 1 ctrl
• Ic 3 ctrl
• Ic 5 ctrl
• Ignition coil 1 (top of left cylinder bank)
• Ignition coil 3 (top of left cylinder bank)
• Ignition coil 5 (top of left cylinder bank)
• Imtv ctrl sig
• Intake sens (1)
• Intake sens (2)
• Intake sol
• Intake sol (1)
• J145
• Knock sens sig
• Knock sensor (ks) 2 (side of left cylinder bank)
• Lo ref
• Nca
• Plug spark
• Purge sol ctrl
• Red
• Spark plug
• Starting/ charging system
• Tac mtr ctrl 1
• Tac mtr ctrl 2
• Tan
• X121) j152

3.6L VIN V

3.6L VIN V, Engine Performance Wiring Diagram (1 of 5) for Cadillac CTS 2008

List of elements for 3.6L VIN V, Engine Performance Wiring Diagram (1 of 5) for Cadillac CTS 2008:

• (at right rear shock tower) g401
• (in engine harness, near branch for underhood fuse block) j185
• (in fuel tank harness, near inline con- nector x420) j400
• (top right of engine) g132
• 5v ref 2
• 5v ref 3
• A/c refrigerant pressure sensor (near left front strut tower, on a/c refrigerant line)
• A/t internal mode switch
• Air conditioning system
• App sens 1 sig
• App sens 2 sig
• Automatic transmission
• Batt+ volt
• Clutch rly ctrl
• Cnstr/ vent fuse 10a
• Computer data lines system
• Control solenoid valve assembly
• Cooling fans system
• Ctrl actr sig
• Ecm fuse 15a
• Ecm/ tcm ign fuse 15a
• Engine control module (ecm)
• Evaporative emission (evap) canister vent solenoid valve
• Exterior lights system
• Fan rly ctrl
• Fuel level sens
• Fuel level sensor
• Fuel pump & sender assembly (in fuel tank)
• Fuel tank pressure sensor (in fuel tank)
• Gnd
• H2os hi sig
• Heated oxygen sensor bank 1 sensor 2 (on left exhaust pipe, after catalytic converter)
• Heated oxygen sensor bank 2 sensor 2 (on right exhaust pipe, after catalytic converter)
• Hi volt ctrl cyl 3
• Ho2s htr lo ctrl
• Ho2s lo sig
• Hot at all times
• Hot w/ ign main relay energized
• Ign 1 volt
• J187
• Lo ref
• Maf sens sig
• Main rly ctrl
• Mil ctrl
• Nca
• Pnk
• Press sens sig
• Rear fuse block (right rear of luggage compt)
• Rly ctrl
• Sens lo ref
• Sens sig
• Sens volt ref 1
• Serial data bus+
• Serial data bus-
• Starting/ charging system
• Str rly coil ctrl
• Sw sig/sply volt
• Tan
• Temp sens sig
• Transmissions system
• Underhood fuse block (right front of engine compt)
• Vent sol ctrl
• Wakeup serial data

3.6L VIN V, Engine Performance Wiring Diagram (2 of 5) for Cadillac CTS 2008

List of elements for 3.6L VIN V, Engine Performance Wiring Diagram (2 of 5) for Cadillac CTS 2008:

• 15a
• Acc
• Accelerator pedal position (app) sensor (above accelerator pedal)
• Body control module (bcm)
• Brk vac pump fuse 20a
• Camshaft position (cmp) sensor (exhaust bank 1)
• Camshaft position (cmp) sensor (exhaust bank 2)
• Camshaft position (cmp) sensor (intake bank 1)
• Camshaft position (cmp) sensor (intake bank 2)
• Computer data lines system
• Ecm fuse 10a
• Emis 1 fuse 15a
• Emis 2 fuse 15a
• Even coils fuse
• Fuel pump fuse 20a
• Fuel pump relay
• G132 (top right of engine)
• G401 (at right rear shock tower)
• Gmlan data gmlan data x3
• Hot at all times
• Ignition switch
• J183
• J260 (w/o remote start)
• Mass air flow sensor (maf) & intake air temperature (iat) sensors (left front of engine compt)
• Odd coils fuse
• Off
• Pnk
• Pwr/ trn relay
• Run
• Start
• Tan
• Underhood fuse block (right front of engine compt)

3.6L VIN V, Engine Performance Wiring Diagram (3 of 5) for Cadillac CTS 2008

List of elements for 3.6L VIN V, Engine Performance Wiring Diagram (3 of 5) for Cadillac CTS 2008:

• (top right side of engine) evaporative emission (evap) canister purge solenoid valve
• Auxiliary brake booster pump
• Brake booster pump relay
• Camshaft position (cmp) actuator solenoid valve (exhaust bank 1)
• Camshaft position (cmp) actuator solenoid valve (exhaust bank 2)
• Camshaft position (cmp) actuator solenoid valve (intake bank 1)
• Camshaft position (cmp) actuator solenoid valve (intake bank 2)
• Computer data lines system
• Crankshaft position (ckp) sensor (right side of engine)
• Driver information center (dic)
• Engine oil pressure (eop) sensor (in oil filter housing)
• Fuel rail pressure (frp) sensor
• G132 (top right of engine)
• Gmlan lo spd
• Heated oxygen sensor bank 1 sensor 1 (on left exhaust pipe, before catalytic converter)
• Instrument panel cluster (ipc)
• J142
• J184
• Logic
• Low engine oil pressure ind
• Malfunction ind lamp (mil)
• Nca
• Tan

3.6L VIN V, Engine Performance Wiring Diagram (4 of 5) for Cadillac CTS 2008

List of elements for 3.6L VIN V, Engine Performance Wiring Diagram (4 of 5) for Cadillac CTS 2008:

• (front center of engine) throttle body
• (top of right cylinder bank) ignition coil 2
• (top of right cylinder bank) ignition coil 4
• (top of right cylinder bank) ignition coil 6
• Actr lo ctrl
• Ect sens sig
• Engine control module (ecm)
• Engine coolant temperature (ect) sensor (side of left cylinder head)
• G131 (left rear of engine)
• Heated oxygen sensor bank 2 sensor 1 (on right exhaust pipe, before catalytic converter)
• Hi volt sply cyl 1
• Hi volt sply cyl 4
• Ho2s htr lo ctrl
• Ho2s lo ref
• Ho2s ref volt
• Htr lo ctrl
• Ic 2 ctrl
• Ic 4 ctrl
• Ic 6 ctrl
• Ign 1 volt
• J162
• Knock sens 2 sig
• Knock sens sig
• Lo ref
• Nca
• Oil press sens
• Plug spark
• Spark plug
• Tan
• Tp sens 1 sig
• Tp sens 2 sig

3.6L VIN V, Engine Performance Wiring Diagram (5 of 5) for Cadillac CTS 2008

List of elements for 3.6L VIN V, Engine Performance Wiring Diagram (5 of 5) for Cadillac CTS 2008:

• (on right side of engine block) knock sensor (ks) 1
• (rear of right cylinder head) g130
• (top of left cylinder bank) fuel injector 3
• (top of left cylinder bank) fuel injector 5
• (top of right cylinder bank)
• (top of right cylinder bank) fuel injector 6
• 5v ref 1
• 5v ref 2
• 5v ref 3
• Actr hi ctrl
• Ckp sens sig
• Cooling fans system
• Engine control module (ecm)
• Exhaust sens
• Exhaust sens (2)
• Exhaust sol (1)
• Exhaust sol (2)
• Frp sens sig
• Fuel injector 1 (top of left cylinder bank)
• Fuel injector 2
• Fuel injector 4
• Gen duty cycle sig
• Gen turn on sug
• Hi volt ctrl cyl 1
• Hi volt ctrl cyl 2
• Hi volt ctrl cyl 3
• Hi volt ctrl cyl 4
• Hi volt ctrl cyl 5
• Hi volt ctrl cyl 6
• Hi volt sply cyl 2
• Hi volt sply cyl 3
• Hi volt sply cyl 5
• Hi volt sply cyl 6
• High pressure fuel pump
• Htr rly ctrl
• Ic 1 ctrl
• Ic 3 ctrl
• Ic 5 ctrl
• Ignition coil 1 (top of left cylinder bank)
• Ignition coil 3 (top of left cylinder bank)
• Ignition coil 5 (top of left cylinder bank)
• Intake sens (1)
• Intake sens (2)
• Intake sol
• Intake sol (1)
• J161
• Knock sens sig
• Knock sensor (ks) 2 (side of left cylinder bank)
• Lo ref
• Nca
• Plug spark
• Purge sol ctrl
• Red
• Rly coil ctrl
• Spark plug
• Starting/charging system
• Tac mtr ctrl 1
• Tac mtr ctrl 2
• Tan