AIR CONDITIONING – Cadillac STS 2007 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 3) for Cadillac STS 2007

List of elements for Automatic A/C Wiring Diagram (1 of 3) for Cadillac STS 2007:

• (in dash harness, 35 cm from c214)
• (in dash harness, 51 cm from left front dash speaker connector)
• 5 volt ref
• A10
• A11
• A12
• Air quality hc sens sig
• Air quality nox sens sig
• Amb air temp sens sig
• Ambient light sens sig
• Ambient light sensor sig
• Aux inside air temp sens sig
• B10
• B11
• B12
• Battery
• Blower fuse 40a
• Blower mtr spd ctrl
• Blower relay
• Ccp fuse 10a
• Cmp clu relay
• Comp cltch fuse 10a
• Drv air temp dr ctrl b
• Drv air temp dr pos sig
• Drv temp dr ctrl a
• Evap low temp sens sig
• Evaporator temperature sensor (inside hvac case, at evaporator core)
• G201 (behind right kick panel)
• Gnd
• Hot at all times
• Hot in run or start
• Hot w/ run/ crank relay energized
• Hvac control module (in center of dash, below radio)
• Ign 1 volt
• Ign 3 volt
• Inside air temp sens ctrl
• Inside air temp sens sig
• Inside air temperature sensor (on dash, right of steering column)
• Interior lights system
• L sunload sens sig
• Led backlight dimming cntrl
• Left sunload sensor signal
• Low ref
• Low reference
• Low spd gmlan serial data
• Med blower motor ctrl
• Mode dr ctrl a
• Mode dr ctrl b
• Mode dr pos sig
• Nca
• Pass air temp dr ctrl a
• Pass air temp dr ctrl b
• Pass air temp dr pos sig
• Pnk
• Power distribution system
• R sunload sens sig
• R51
• R52
• R53
• R54
• R55
• R56
• R57
• R58
• Rear mode dr ctrl a
• Rear mode dr ctrl b
• Rear mode dr pos sig
• Rear mode sw sig
• Rear temp sw sig
• Recirc dr ctrl b
• Recirc dr pos sig
• Recirculation actuator (on hvac module, left of blower motor)
• Right sunload sensor signal
• S202
• S210
• S211 (in dash harness, 28 cm from c214)
• S222 (in hvac motor assembly harness)
• Seats system
• Solid state
• Sunload sensor (center of dash, in defroster grille)
• Tan
• Underhood fuse block (right front side of engine compt)
• Wash noz/ aqs fuse 10a

Automatic A/C Wiring Diagram (2 of 3) for Cadillac STS 2007

List of elements for Automatic A/C Wiring Diagram (2 of 3) for Cadillac STS 2007:

• (front center of right front cylinder head) (3.6l) g113
• (in engine poa harness, 39 cm from g113) (3.6l) s148
• (in hvac motor assembly harness)
• (inside center console, on right rear side) auxiliary mode actuator
• (left center of dash, on lower left side of hvac module) rear passenger air temperature actuator
• A/c compressor clutch
• Air qual hc sens
• Air qual nox sens
• Air quality sensor (if equipped) (under front facia, near front grille center)
• Blower controller (in the passenger compt, under the dash, behind the glove box)
• Blower motor (under dash, behind glove box)
• Blower mtr fan ctrl
• Blower mtr resistor
• Blower mtr spd ctrl
• Blower mtr sply volt
• Cold
• Def
• Driver air temperature actuator (left center of dash, on left side of hvac module)
• Dry air temp signal
• Front passenger air temperature actuator (right center of dash, on right side of hvac module)
• G100 (except 3.6l) (on rear side of right cylinder head)
• G104 (on right front frame rail, near bumper bracket)
• G201 (in passenger compt, behind right kick panel)
• Gnd
• Ground
• Hot
• Hot w/ ign 1 relay energized
• Ign 1 voltage
• Logic
• Low ref
• Mode actuator (on top left side of hvac module)
• Mode valve signal
• Pass air temp signal
• Pnk
• Right rear fuse block (under right side of rear seat)
• Run/crank fuse 10a
• S212 (in dash harness, 38 cm from ipm c3)
• S223
• Seats system
• Splice pack
• Tan
• Tan/ red
• Vent

Automatic A/C Wiring Diagram (3 of 3) for Cadillac STS 2007

List of elements for Automatic A/C Wiring Diagram (3 of 3) for Cadillac STS 2007:

• (on left front frame rail, below left headlamp assembly) engine control module (ecm)
• 3.6l
• 5v ref
• A/c clutch relay ctrl
• A/c refrig press sens
• A/c refrigerant pressure sensor (near left front strut tower, on a/c refrigerant line)
• Ambient air temperature sensor (under front facia, near center of grille)
• Computer data lines system
• Connector)
• Ect sens sig
• Engine control module (ecm) (front of engine, on right valve cover)
• Engine controls system
• Engine coolant temperature (ect) sensor (3.6l: in center of left cylinder head) (4.6l: in rear side of right cylinder head)
• Except 3.6l
• Feed
• G104 (on right front frame rail, near bumper bracket)
• Hi spd fan relay ctrl
• Hi speed fan relay
• High fan fuse 30a
• Hot at all times
• Instrument panel cluster (ipc)
• Left cooling fan (behind radiator)
• Logic
• Low fan fuse 30a
• Low ref
• Low spd fan relay ctrl
• Low spd gmlan serial data
• Low speed fan relay
• Powertrain relay
• Powertrain relay ctrl
• R14
• R15
• R16
• R17
• R18
• R19
• R20
• R21
• R22
• R39
• R40
• R41
• R42
• R47
• R48
• R49
• R50
• Radio
• Right cooling fan (behind radiator)
• Rtn
• S/p fan relay
• S108 (3.6l) (in engine harness, 28 cm from maf sensor connector)
• S120 (3.6l) (in engine poa harness, 21 cm from throttle body assembly connector)
• Serial data
• Sig
• Splice pack sp201 (on dash harness, under dashboard, near firewall grommet)
• Tan
• Underhood fuse block (right front side of engine compt)

Compressor Wiring Diagram for Cadillac STS 2007

List of elements for Compressor Wiring Diagram for Cadillac STS 2007:

• (front center of right front cylinder head) (3.6l) g113
• (in engine poa harness, 39 cm from g113) (3.6l) s148
• 3.6l
• 5v reference
• A/c clutch relay ctrl
• A/c compressor clutch
• A/c refrig press sensor
• A/c refrigerant pressure sensor (near left front strut tower, on a/c refrigerant line)
• Cmp clu relay
• Comp cltch fuse 10a
• Computer data lines system
• Connector)
• Engine control module (ecm) (front of engine, on right valve cover)
• Engine control module (ecm) (on left front frame rail, below left headlight assembly)
• Engine controls system
• Except 3.6l
• Feed
• G100 (except 3.6l) (on rear side of right cylinder head)
• Hot at all times
• Hot w/ ign 1 relay energized
• Low reference
• Pnk
• R55
• R56
• R57
• R58
• Right rear fuse block (under right side of rear seat)
• Rtn
• Run/crank fuse 10a
• S108 (3.6l) (in engine harness, 28 cm from maf sensor connector)
• Serial data
• Sig
• Splice pack
• Tan
• Underhood fuse block (right front side of engine compt)