ENGINE PERFORMANCE – Cadillac CTS 2004 – SYSTEM WIRING DIAGRAMS

ENGINE PERFORMANCE

3.2L VIN N

3.2L VIN N, Engine Performance Wiring Diagram (1 of 3) for Cadillac CTS 2004

List of elements for 3.2L VIN N, Engine Performance Wiring Diagram (1 of 3) for Cadillac CTS 2004:

• (in engine harness, 120 cm from ho2s 21)
• (in fuel injector harness, near c112)
• (left rear of intake plenum) intake manifold runner control solenoid
• (near ignition coils)
• +5v ref
• Case ground
• Ckp hi
• Ckp low
• Cmp sig
• Coil 1 ctrl
• Coil 2 ctrl
• Coil 3 ctrl
• Coil 4 ctrl
• Coil 5 ctrl
• Coil 6 ctrl
• Crankshaft position sensor
• Dk red/
• Ect sens
• Elec- tronic ignition module (bank 2)
• Electronic ignition module (bank 1)
• Engine control module (front of right valve cover)
• Evap purge
• Fuel inj 1
• Fuel inj 2
• Fuel inj 4
• Fuel inj 5
• Fuel inj 6
• Fuel injectors
• G100 (near starter motor)
• G107
• Heated oxygen sensor bank 1 sensor 1 (on right exhaust pipe)
• Heated oxygen sensor bank 1 sensor 2 (on right catalytic converter)
• Heated oxygen sensor bank 2 sensor 1 (on left exhaust pipe)
• Heated oxygen sensor bank 2 sensor 2 (on left catalytic converter)
• Ho2s 1,1 htr
• Ho2s 1,1 low
• Ho2s 1,1 sig
• Ho2s 1,2 hi
• Ho2s 1,2 htr
• Ho2s 1,2 lo
• Ho2s 2,1 htr
• Ho2s 2,1 low
• Ho2s 2,1 sig
• Ho2s 2,2 hi
• Ho2s 2,2 lo
• Iat sig
• Inj 3 ctrl
• Intk out 1
• Intk out 2
• Knock sensor (bank 1) (right side of engine)
• Knock sensor (bank 2) (left side of engine)
• Ks1 sig
• Ks2 sig
• Lo ref
• Low ref
• Maf sig
• Mass airflow sensor (right side of air cleaner)
• Nca
• Oil pres sig
• Pnk
• S108
• S111
• Shld ground
• Tac mtr ctrl
• Tan
• Tan/red
• To spark plugs
• Tps sens 1
• Tps sens 2

3.2L VIN N, Engine Performance Wiring Diagram (2 of 3) for Cadillac CTS 2004

List of elements for 3.2L VIN N, Engine Performance Wiring Diagram (2 of 3) for Cadillac CTS 2004:

• (in front of underhood fuse box)
• Camshaft position sensor (left front of engine)
• Canister vent fuse 10a
• Ecm fuse 15a
• Ecm/tcm fuse 10a
• Engine coolant temperature sensor (top rear of intake manifold)
• Engine oil pressure sensor (aboe oil filter)
• Evap canister purge solenoid (right side of engine)
• Even inj/ coil fuse 15a
• Fuel pump relay
• Fuse a 15a
• G100 (near starter motor)
• G104 (near right head- lamp)
• G401 (rear of right shock tower)
• Hot at all times
• Hot in run or start
• Ign 1 relay
• Ign mod/ maf fuse 15a
• Intake manifold tuning valve solenoid (rear side of intake duct)
• Main relay
• Odd inj/ coil fuse 15a
• Pnk
• Post fuse 15a
• Pre 02/ cam fuse 15a
• R36
• R37
• R38
• R40
• R43
• R44
• R45
• R46
• R47
• R48
• R49
• R50
• Right rear fuse block (below right rear seat)
• S132
• Sp102
• Tan
• Tcm/ ipc fuse 15a
• Theft fuse 7.5a
• Throttle position sensor (top right front of engine)
• Tos fuse 10a
• Under- hood fuse block (left front of eng compt)
• Vehicle speed sensor (m/t) (near rear of transmission assembly)

3.2L VIN N, Engine Performance Wiring Diagram (3 of 3) for Cadillac CTS 2004

List of elements for 3.2L VIN N, Engine Performance Wiring Diagram (3 of 3) for Cadillac CTS 2004:

• (engine harn, 160 cm from ecm ground)
• (in rear compt lid harn, 237 cm from c401)
• +5v ref
• 1786 (or 1035)
• 2000 ser dat
• A/c pres
• A/c rly ctrl
• A/c system
• A/t
• Acc
• Acc volt
• Accelerator pedal
• Anti-lock brakes system
• App 2 sig
• App sens1
• Automatic transmission manual shift shaft switch assembly
• Bas rly ctrl
• Battery
• Charging system
• Class 2 data
• Computer data lines system
• Cooling fans system
• Cpp sw sig
• Crank
• Cruise control system
• Data bus
• Data link connector (under left side of dash)
• Del tor sig
• Eng spd sig
• Engine control module (front of right valve cover)
• Engine speed
• Evap canister vent solenoid (above rear differential)
• Evap ctrl
• Ext brk sig
• F lev sig
• Fuel lev sns
• Fuel level sensor
• Fuel pump/ sender assembly
• Fuel tank pressure sensor (in fuel tank)
• G100 (near starter motor)
• G401 (rear of right shock tower)
• Gen on sig
• Gen signal
• Gmlan data
• Hot at all times
• Ign 1
• Ign 1 volt
• Ign voltage
• Ignition switch
• Instrument panel cluster
• Lan bus +
• Lan bus -
• Logic
• Low red
• Low ref
• M/t
• Main rly ctrl
• Malfunction indicator lamp
• Mil ctrl
• Off/ lock
• P/n sig
• Pnk
• Position sensor (above accelerator pedal)
• Req torq
• Res/accel
• Rly coil ctrl
• Rly ctrl
• Run
• S114
• S400
• Secondary fuel sender assembly
• Ser data
• Sound system
• Sp102 (in front of underhood fuse box)
• Start
• Starting system
• Tan
• Tnk pres sig
• Trac ctrl
• Transmission control module (right front side of engine compt)
• Vss
• Vss signal

3.6L VIN 7

3.6L VIN 7, Engine Performance Wiring Diagram (1 of 4) for Cadillac CTS 2004

List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (1 of 4) for Cadillac CTS 2004:

• (engine harn, 20 cm from c1 conn of pcm)
• (inj harn, 10 cm from c121)
• (left rear of intake plenum) intake manifold runner control solenoid
• +5v
• +5v ref
• Baro sig
• Charging system
• Ckp hi
• Ckp sens lo
• Cmp sig
• Cmp sol ctrl
• Crankshaft position sensor
• Drain
• Ect sig
• Engine control module (front of right valve cover)
• Engine oil level/temperature sensor (in oil pan)
• Engine oil pressure sensor (in oil filter housing)
• Evap sol ctrl
• Fuel injectors
• G133 (right front of engine)
• Gen fdc sig
• Gen to sig
• Heated oxygen sensor bank 1 sensor 1 (on right exhaust pipe)
• Heated oxygen sensor bank 1 sensor 2 (on right catalytic converter)
• Heated oxygen sensor bank 2 sensor 1 (on left exhaust pipe)
• Heated oxygen sensor bank 2 sensor 2 (on left catalytic converter)
• Ho2s hi sig
• Ho2s lo ctrl
• Ho2s lo sig
• Ho2s pmp ct
• Ic 1 sig
• Ic 2 ctrl
• Ic 3 ctrl
• Ic 4 sig
• Ic 5 ctrl
• Ic 6 ctrl
• Imrc sol ctrl
• Inj 1 ctrl
• Inj 2 ctrl
• Inj 3 ctrl
• Inj 4 ctrl
• Inj 5 ctrl
• Inj 6 ctrl
• Knock sensor (bank 1) (right side of engine)
• Knock sensor (bank 2) (left side of engine)
• Ks 1 sig
• Ks 2 sig
• Low ref
• Nca
• Oil lev sig
• Oil pres sig
• Oil tmp sig
• Pnk
• S140
• Tac mtr ctrl
• Tan
• Tan a
• Tp sig
• Tp2 sig

3.6L VIN 7, Engine Performance Wiring Diagram (2 of 4) for Cadillac CTS 2004

List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (2 of 4) for Cadillac CTS 2004:

• (engine harn 24.5 cm from ect sensor)
• (engine harn, 15 cm from coil 1)
• (engine harn, 15 cm from coil 5)
• (left rear of eng)
• Canister vent fuse 10a
• Ecm fuse 15a
• Ecm/tcm fuse 10a
• Even inj/ coil fuse 15a
• Fuel pump relay
• Fuse a 15a
• G104 (near right head- lamp)
• G130 (rear of right cyl head)
• G131
• G401 (rear of right shock tower)
• Hot at all times
• Hot in run or start
• Ign 1 relay
• Ign mod/ maf fuse 15a
• Ignition coil 1 (top right of engine)
• Ignition coil 2 (top left of engine)
• Ignition coil 3 (top right of engine)
• Ignition coil 4 (top left of engine)
• Ignition coil 5 (top right of engine)
• Ignition coil 6 (top left of engine)
• Main relay
• Nca
• Odd inj/ coil fuse 15a
• Pnk
• Post fuse 15a
• Pre 02/ cam fuse 15a
• R36
• R37
• R38
• R40
• R43
• R44
• R45
• R46
• R47
• R48
• R49
• R50
• Right rear fuse block (below right rear seat)
• S142
• S144
• S145
• S146
• S149
• S150
• Spark plug
• Tan
• Tcm/ ipc fuse 15a
• Theft fuse 7.5a
• Under- hood fuse block (left front of eng compt)

3.6L VIN 7, Engine Performance Wiring Diagram (3 of 4) for Cadillac CTS 2004

List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (3 of 4) for Cadillac CTS 2004:

• (front of left cyl head) camshaft position actuator solenoid (exhaust bank 2)
• (front of left cyl head) camshaft position actuator solenoid (intake bank 2)
• (front of left cyl head) camshaft position sensor (exhaust bank 1)
• (front of left cyl head) camshaft position sensor (intake bank 2)
• (front of right cyl head) camshaft position actuator solenoid (exhaust bank 1)
• (front of right cyl head) camshaft position actuator solenoid (intake bank 1)
• (front of right cyl head) camshaft position sensor (exhaust bank 1)
• (front of right cyl head) camshaft position sensor (intake bank 1)
• +5v
• A/c refrigerant pressure sensor (near left front strut tower)
• Barometric pressure sensor (top rear of engine)
• Engine coolant temperature sensor (top rear of intake manifold)
• Evap canister purge solenoid (right side of engine)
• Low ref
• Mass airflow sensor (right side of air cleaner)
• Pnk
• S148
• Signal
• Tan
• Throttle position sensor (top right front of engine)

3.6L VIN 7, Engine Performance Wiring Diagram (4 of 4) for Cadillac CTS 2004

List of elements for 3.6L VIN 7, Engine Performance Wiring Diagram (4 of 4) for Cadillac CTS 2004:

• (front of right cyl head)
• (fuel tank harn, 40 cm from c420)
• +5v ref
• +5v ref a
• +5v ref c
• A/c ref pres
• A/c system
• Acc
• Acc volt
• Accelerator pedal
• Anti-lock brake system
• App sens 2 sig
• App sens sig
• Automatic transmission manual shift shaft switch assembly
• Battery +
• Brk sw sig
• Cc sw sig
• Class 2 data
• Clu rly ctrl
• Computer data lines system
• Cooling fans system
• Crank volt
• Cruise control system
• Delv torque sig
• Eng spd sig
• Engine control module (front of right valve cover)
• Engine speed
• Evap canister vent solenoid (above rear differential)
• Evap sol ctrl
• Fan rly ctrl
• Fuel lev sens
• Fuel lev sig
• Fuel level sensor
• Fuel pump/ sender assembly
• Fuel tank pressure sensor (in fuel tank)
• G132
• G401 (rear of right shock tower)
• Gmlan bus
• Ho2s hi sig
• Ho2s lo ctrl
• Ho2s lo sig
• Hot at all times
• Iat sig
• Ign 1 volt
• Ignition switch
• Instrument panel cluster
• Lan bus +
• Lan bus -
• Logic
• Low ref
• Maf sig
• Main rly ctrl
• Malfunction indicator lamp
• Mil ctrl
• Off/ lock
• P/n sig
• Pnk
• Position sensor (above accelerator pedal)
• Req torq sig
• Rly coil ctrl
• Rly coil supp
• Rly ctrl
• Run
• S156
• S400
• Secondary fuel sender assembly
• Ser data bus
• Sound system
• Sp102 (in front of underhood fuse box)
• Start
• Starting system
• Tan
• Tank pres sig
• Tc data sig
• Transmission control module (right front side of engine compt)
• Vss

5.7L VIN P

5.7L VIN P, Engine Performance Wiring Diagram (1 of 4) for Cadillac CTS 2004

List of elements for 5.7L VIN P, Engine Performance Wiring Diagram (1 of 4) for Cadillac CTS 2004:

• (center of eng, below intake manifold)
• (engine harn, 15.5 cm from c101)
• (engine harn, 20 cm from underhood fuse block breakout)
• (rear of left cyl head)
• +5v ref a
• +5v ref b
• 5v ref
• Acc voltage
• Anti-lock brake system
• Ckp sen b+
• Ckp sen sig
• Cmp sen sig
• Computer data lines system
• Cooling fans system
• Cpp sw sig
• Ect sen sig
• Eng cool fan rly 1 ctrl
• Engine coolant temperature sensor (left side of of eng, below generator)
• Extended travel brake sw
• Fuel inj n04 ctrl
• Fuel inj n06
• Fuel inj n07 ctrl
• Fuel inj no1
• Fuel inj no2 ctrl
• Fuel inj no3 ctrl
• Fuel inj no5 ctrl
• Fuel inj no8 ctrl
• Fuel injectors
• G140
• G141 (rear of left cylinder head)
• G142 (rear of right cylinder head)
• Ground
• Heated oxygen sensor, bank 1 sensor 1 (forward of catalytic converter)
• Heated oxygen sensor, bank 1 sensor 2 (rear of catalytic converter)
• Heated oxygen sensor, bank 2 sensor 1 (forward of catalytic converter)
• Heated oxygen sensor, bank 2 sensor 2 (rear of catalytic converter)
• Ho2s sig hi bank 1 sen1
• Ho2s sig hi bank1 sen1
• Ho2s sig hi bank2 sen1
• Ho2s sig hi bank2 sen2
• Ho2s sig lo bank1 sen1
• Ho2s sig lo bank1 sen2
• Ho2s sig lo bank2 sen1
• Ho2s sig lo bank2 sen2
• Knock sen sig 1
• Knock sen sig 2
• Knock sensor
• Low oil level sw sig
• Low ref
• Nca
• Pcm gnd
• Pnk
• Powertrain control module (behind right front fender)
• Request torque sig
• Rly coil ctrl
• S160
• S161
• S162
• S169
• S170
• Serial data
• Skip shift sol ctrl
• Starting system
• Tan
• Tan a
• Uart serial data

5.7L VIN P, Engine Performance Wiring Diagram (2 of 4) for Cadillac CTS 2004

List of elements for 5.7L VIN P, Engine Performance Wiring Diagram (2 of 4) for Cadillac CTS 2004:

• (rear compt lid harn, 237 cm from c401)
• (rear of right shock tower) g401
• Canister vent fuse 10a
• Ecm/tcm fuse 10a
• Evaporative emission canister purge solenoid valve (top left side of eng, on intake manifold)
• Even inj/ coil fuse 15a
• Fuel level sensor
• Fuel pump motor fuse 20a r37
• Fuel pump relay
• Fuel pump/ sender assembly
• G104 (near right head- lamp)
• G401 (rear of right shock tower)
• Hot at all times
• Hot in run or start
• Ign 1 relay
• Ign mod/ maf fuse 15a
• Main relay
• Manifold absolute pressure sensor (on top rear of intake manifold)
• Odd inj/ coil fuse 15a
• Pnk
• Post fuse 15a
• Pre 02/ cam fuse 15a
• R36
• R38
• R40
• R43
• R44
• R45
• R46
• R47
• R48
• R49
• R50
• Right rear fuse block (below right rear seat)
• S400
• Secondary fuel sender assembly
• Sp102 (right front corner of engine compt)
• Tan
• Tcm/ ipc fuse 15a
• Theft fuse 7.5a
• Tos fuse 10a
• Transmission fluid temperature sensor (in transmission)
• Under- hood fuse block (left front of eng compt)

5.7L VIN P, Engine Performance Wiring Diagram (3 of 4) for Cadillac CTS 2004

List of elements for 5.7L VIN P, Engine Performance Wiring Diagram (3 of 4) for Cadillac CTS 2004:

• (attached to pcm below battery) throttle actuator control module
• (ign coil module, on left valve cover)
• (lower right side of eng) crankshaft position sensor
• (on left side of throttle body) throttle actuator control motor
• (on left side of transmission) reverse lockout solenoid
• (on right side of throttle body) throttle position sensor
• (on top of accelerator pedal, part of mounting bracket) accelerator pedal position sensor
• (rear of right cylinder head)
• (top center rear of eng) camshaft position sensor
• (under vehicle, on left side of transmission) skip shift solenoid
• +5v ref
• 5v ref
• A/c refrigerant pressure sensor (near left front strut tower)
• Anti-lock brake system
• App no1 sig
• App no2 sig
• App no3 sig
• Bas rly supp
• Cruise control system
• Engine oil level/temper- ature sensor (in oil pan)
• Engine oil pressure sensor (on top center rear of eng)
• G141 (rear of left cylinder head)
• G142
• G142 (rear of right cylinder head)
• Gnd
• Ign
• Ign 1
• Ignition coil/module 1 (top of cylinder)
• Ignition coil/module 3 (top of cylinder)
• Ignition coil/module 5 (top of cylinder)
• Ignition coil/module 7 (top of cylinder)
• Low ref
• On/off sig
• Plug spark
• Pnk
• Red
• Red c ign ctrl
• Ref lo
• Res/acc sig
• S163
• S165
• S167
• Set/coast sig
• Spark plug
• Tac ctrl no1
• Tac ctrl no2
• Tan
• Tan a
• Tps no1 sig
• Tps no2 sig
• Uart ser data

5.7L VIN P, Engine Performance Wiring Diagram (4 of 4) for Cadillac CTS 2004

List of elements for 5.7L VIN P, Engine Performance Wiring Diagram (4 of 4) for Cadillac CTS 2004:

• (ign coil module, on left valve cover)
• (inside right rear wheelhouse panel) evaporative emission canister vent solenoid valve
• (on air intake assembly) mass air flow sensor
• (on right of differential) vehicle speed sensor
• +12v ref
• A gnd
• A tan
• A/c clutch rly ctrl
• A/c refrig press sen sig
• A/c system
• Acc
• Alt term l
• Anti-lock brake system
• B ref lo
• Charging system
• Cooling fans system
• Crank voltage
• D ign
• D pnk
• Eng oil press sen sig
• Eng speed (tach) out sig
• Engine speed
• Evap can purge sol ctrl
• Evap can vent valve ctrl
• Fuel level sen sig
• Fuel levl sen sig (second)
• Fuel pump rly ctrl
• Fuel tank press sen sig
• Fuel tank pressure sensor (in right fuel tank)
• G140 (rear of left cyl head)
• G142 (rear of right cylinder head)
• Gen field duty sig
• Ground
• Hi spd fan rly ctrl
• Ho2s htr low ctrl
• Hot at all times
• Iat sen sig
• Ign ctrl 1
• Ign ctrl 2
• Ign ctrl 3
• Ign ctrl 4
• Ign ctrl 5
• Ign ctrl 6
• Ign ctrl 7
• Ign ctrl 8
• Ignition coil/ module 2 (top of cylinder)
• Ignition coil/ module 4 (top of cylinder)
• Ignition coil/ module 6 (top of cylinder)
• Ignition coil/ module 8 (top of cylinder)
• Ignition switch
• Instrument panel cluster
• Logic
• Low ref
• Maf sen sig
• Main rly ctrl
• Malfunction indicator lamp
• Map sen sig
• Mil ctrl
• Off/ lock
• Oil temp
• Plug spark
• Pnk
• Powertrain control module (behind right front fender)
• Red
• Reverse inhibit sol ctrl
• Run
• S164
• S166
• S168
• Sound system
• Spark plug
• Ss ind
• Ss lamp ctrl
• Start
• Starting system
• Tan
• Tft sen sig
• Torque delivered
• Vehicle speed out
• Vss
• Vss ref lo
• Vss sig hi