AIR CONDITIONING – Cadillac CTS 2004 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 3) for Cadillac CTS 2004

List of elements for Automatic A/C Wiring Diagram (1 of 3) for Cadillac CTS 2004:

• 3.2l
• 5 volt reference
• After boil pump relay ctrl
• Air inlet motor
• Amb air temp sensor sig
• Ambient light sensor signal
• Battery
• Blower fuse 40a
• Blower mtr speed ctrl
• Blower relay
• Blower relay ctrl
• Ccp fuse 10a
• Cmp clu relay
• Comp clutch fuse 10a
• Computer data lines system
• Coolant level switch signal
• Door a
• Door b
• Dr air temp door ctrl b
• Driver air temp door ctrl a
• Driver air temp posit signal
• E10
• E11
• E12
• E13
• E14
• E15
• E16
• Evap low temp sens signal
• Evaporator temperature sensor (on right side of evaporator case)
• F10
• F11
• F12
• F13
• F14
• F15
• F16
• G201 (behind right kick panel)
• Ground
• Hot at all times
• Hot in run
• Hvac control module (behind center of dash, below radio)
• Ign 3 fuse 10a
• Ignition 3 voltage
• Inside air temp sensor sig
• Inside air temperature sensor
• Joint connector
• Left rear fuse block (below left rear seat)
• Left sunload sensor signal
• Low reference
• Mode door ctrl a
• Mode door ctrl b
• Mode door position signal
• Nca
• Pass air temp door ctrl a
• Pass air temp door ctrl b
• Pass air temp posit signal
• Pnk
• R51
• R52
• R53
• R54
• R55
• R56
• R57
• R58
• Recirc door ctrl a
• Recirc door ctrl b
• Recirculation actuator (left side of the blower motor)
• Right sunload sensor signal
• S117
• Serial data
• Solid state
• Splice pack sp302
• Sunload sensor (top center of i/p, on defrost grill)
• Tan
• Underhood fuse block (right front of engine compartment)
• Volt

Automatic A/C Wiring Diagram (2 of 3) for Cadillac CTS 2004

List of elements for Automatic A/C Wiring Diagram (2 of 3) for Cadillac CTS 2004:

• (3.2l)
• (3.6l)
• (5.7l)
• (in blower motor harness, 115 cm from c323) s323
• (in hvac module harness, 6 cm from c321)
• 3.2l
• A/c
• A/c compressor clutch
• Acc
• After boil coolant pump (on right side of engine block)
• After boil fuse 10a
• After boil relay (3.2l)
• Blower motor (on right side of hvac module)
• Blower motor control processor (on lower left side of blower motor)
• Blower mtr speed ctrl
• Cold
• Def
• Driver air temperature actuator (on hvac module)
• Dry air temp signal
• G100 (left rear side of engine)
• G100 (left rear side of engine) g132 (front of right cylinder head) g142 (rear of right cylinder head)
• G201 (behind right kick panel)
• Hot
• Hot at all times
• Ignition switch
• Lock
• Logic
• Mix motor
• Mode actuator
• Mode actuator (on left side of hvac module)
• Mode valve signal
• Nca
• Off
• Pass air temp signal
• Passenger air temperature actuator (on hvac module)
• Pnk
• R11
• R12
• R13
• R15
• Right rear fuse block (below right rear seat)
• Run
• S118
• S202 (in the i/p harness, 48 cm from hazard switch connector)
• Splice pack sp200 (in right front of passenger compt, under dash, above steering column)
• Start
• Tan

Automatic A/C Wiring Diagram (3 of 3) for Cadillac CTS 2004

List of elements for Automatic A/C Wiring Diagram (3 of 3) for Cadillac CTS 2004:

• (3.2l)
• (except 3.2l) a
• (left rear side of engine) g100
• (near left front strut tower) g101
• (on right body rail, near right headlamp) g104
• (or 452)
• (or 470)
• 26 cm from starter motor connector)
• 3.2l
• 3.2l 3.6l
• 3.6l
• 5.7l
• 5v reference
• A/c clutch relay ctrl
• A/c refrig press sensor
• A/c refrigerant pressure sensor (near the left front strut tower)
• Ambient air temperature sensor (under front bumper, near front grille)
• Coolant bypass solenoid
• Coolant level switch (in left front corner of coolant surge tank)
• Ect sensor signal
• Engine control module (ecm) (3.6l (vin 7): front of right valve cover)
• Engine controls system
• Engine coolant low level
• Engine coolant temperature (ect) sensor (3.2l: rear of intake manifold) (3.6l: side of left cylinder head) (5.7l: front of left cylinder head)
• Except 5.7l
• Feed
• Hi speed fan relay
• Hi speed fan relay ctrl
• High fan fuse 30a
• Hot at all times
• Hot in on or start
• Htr vlv/cltch fuse 10a
• Left cooling fan (left side of radiator)
• Lo speed fan relay
• Logic
• Low fan fuse 30a
• Low reference
• Low speed fan relay ctrl
• Main relay
• Main relay ctrl
• Message center
• Pnk
• Powertrain control module
• R14
• R15
• R16
• R17
• R18
• R19
• R20
• R21
• R22
• R39
• R40
• R41
• R42
• R47
• R48
• R49
• R50
• Radio
• Right cooling fan (right side of radiator)
• Rtn
• S/p fan relay
• S111 s148 (3.6l) (3.2l) (in engine harness, (in engine harness under throttle body, 11.5 cm towards the right)
• S156 (3.6l (vin 7)) (in engine harness, approximately 24 cm from ebcm connector)
• Serial data
• Sig
• Splice pack sp102 (except 5.7l) (right front corner of engine compt)
• Tan
• Underhood fuse block (right front of engine compartment)

Compressor Wiring Diagram for Cadillac CTS 2004

List of elements for Compressor Wiring Diagram for Cadillac CTS 2004:

• (3.2l)
• (3.6l)
• (5.7l)
• (in engine harness, approximately 24 cm from ebcm connector) (3.6l (vin 7)) s156
• (or tan)
• 3.2l
• 3.6l
• 470 (or 452)
• 5.7l
• 5v reference
• A/c clutch relay ctrl
• A/c compressor clutch
• A/c refrig press sens sig
• A/c refrigerant pressure sensor (near the left front strut tower)
• Acc
• Comp clutch fuse 10a
• Comp clutch relay
• Computer data lines system
• Engine control module (ecm) (3.6l: front of right valve cover)
• Except 3.2l
• Except 5.7l
• Feed
• G100 (left rear side of engine) g132 (front of right cylinder head) g142 (rear of right cylinder head)
• Hot at all times
• Ignition switch
• Lock
• Low reference
• Nca
• Off
• Pnk
• Powertrain control module (pcm)
• R55
• R56
• R57
• R58
• Return
• Run
• Sig
• Splice pack sp102 (except 5.7l) (right front corner of engine compartment)
• Splice pack sp200 (in right front of passenger compt, under dash, above steering column)
• Start
• Tan
• Underhood fuse block (right front of engine compartment)