AIR CONDITIONING

(behind front grille, below hood latch) (w/ filter, air auto recirculating) air quality sensor
(in hvac harness, approximately 45 cm (15.7 in) from c321)
(on top right side engine manifold block) (3.6l) g106
A/c compressor clutch (at left front of engine, on a/c compressor)
Blower motor (at right side of hvac)
Blower motor control module (at lower left side of blower motor)
Blower mtr speed ctrl
Evaporator temperature sensor (at right top side of evaporator core)
G100 (4.6l) (on right rear of engine)
G104 (right body rail, behind washer reservoir)
G201 (behind right kick panel)
Ground
Hot w/ run relay energized
Inside air temperature sensor (below hvac control module)
Left air temperature actuator (at left center of hvac module, below mode actuator)
Mode actuator (at left side of hvac module)
Nca
Pnk
Right air temperature actuator (at right center of hvac case)
Right rear fuse block (near right side of rear seat, under carpet)
Run fuse 7.5a
S218
Speed ctrl
Tan

(left front frame rail, near engine control module) a/c refrigerant pressure sensor
(right body rail, behind washer reservoir) g104
3.6l 4.6l
4.6l 3.6l
5v reference
A/c cmprsr
A/c refrig press sensor
Ambient air temperature sensor (at front center of engine compt)
Clutch relay ctrl c2
Computer data lines system
Ect sensor signal
Engine control module (ecm) (4.6l: on left front frame rail, under left headlight assembly) (3.6l: left front side of engine)
Engine coolant temperature (ect) sensor (3.6l: at left side of engine) (4.6l: at rear of right cylinder head)
Fan 1 fuse 30a
Fan 1 relay
Fan 2 fuse 30a
Fan 2 relay
High speed fan relay ctrl
Hot at all times
Left cooling fan (except 4.6l: behind left side of front bumper) (4.6l: behind left side of front bumper, in front of a/c condenser)
Low ref
Low reference
Low speed fan relay ctrl
Main relay ctrl
Pwr/trn relay
R51
R52
R53
R54
R67
R68
R69
R70
R75
R76
R77
R78
R79
R80
R81
R82
R83
Right cooling fan (except 4.6l: behind right side of front bumper) (4.6l: behind right side of front bumper, in front of a/c condenser)
S/p fan relay
S105
Serial data bus +
Serial data bus -
Tan
Underhood fuse block (at right front of engine compt)
W/ auto recirculating air, filter
W/o auto recirculating air, filter

(approximately 38 cm (15 in) from courtesy/reading lamp-center)
(in body harness, approximately 8 cm (3.1 in) from right inflatable restraint roof rail module)
(in headliner harness, approximately 31 cm (10.6 in) from courtesy/reading lamp-center) s307
(on auxiliary blower motor) auxiliary blower motor resistor assembly
(rear of right rear shock tower on "d" pillar) g401
Auxiliary blower motor (at left rear corner of cargo compt)
Auxiliary blower motor switch
Body control module (on lower left side of dash)
G401 (rear of right rear shock tower on "d" pillar)
High
Hot at all times
Interior lights system
Joint connector
Low
Med
Med high
Med low
Off
R21
R22
Rear
Rear a/c fuse 30a
Rear auxiliary blower motor switch
Rear auxiliary mode door control
Right rear fuse block (near right side of rear seat, under carpet)
Run relay
S308
S311
S406
S408 (in headliner harness, approxi- mately 45 cm (17.7 in) from courtesy/ reading lamp-center)
Tan

(on top right side engine manifold block) (3.6l) g106
4.6l 3.6l
5v reference
A/c cltch fuse 10a
A/c cmprsr
A/c cmprsr clutch relay
A/c compressor clutch (at left front of engine, on a/c compressor)
A/c refrig press sens sig
A/c refrigerant pressure sensor (left front frame rail, near engine control module)
Clutch relay ctrl c2
Computer data lines system
Emission 2 fuse 15a
Engine control module (ecm) (4.6l: on left front frame rail, under left headlamp assembly) (3.6l: left front side of engine)
G100 (4.6l) (on right rear of engine)
Hot at all times
Hot w/ pwr/trn relay energize
Hvac control module (center of dash, under radio)
Low reference
Low speed gmlan serial data
Nca
R10
R11
R12
Serial data bus +
Serial data bus -
Tan
Underhood fuse block (at right front of engine compt)

AIR CONDITIONING – Cadillac SRX 2007 – SYSTEM WIRING DIAGRAMS