AIR CONDITIONING – Cadillac Escalade EXT 2009 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 4) for Cadillac Escalade EXT 2009

List of elements for Automatic A/C Wiring Diagram (1 of 4) for Cadillac Escalade EXT 2009:

• (bottom center of hvac module) blower motor control module
• (center of dash)
• (in headliner harness, approximately 35 cm from inside air temperature sensor front breakout)
• (right front of hvac case) g200
• (under right side of hvac module) blower motor
• 5v ref
• A/c low pressure switch (a/c high pressure hose)
• A/c on ind
• A/c on switch
• Air temp
• Air tmp
• Amb tmp
• Ambient light/ sunload sensor assembly (center of dash)
• B(+)
• Blwr spd
• Computer data lines system
• Defogger system
• Dfrst val
• Fresh air ind
• Fresh air request switch
• Front defogger ind
• Front defogger switch
• Front inside air temperature sensor (left front of headliner)
• G103 (front of right cylinder head)
• G200 (right front of hvac case)
• G201 (left end of dash)
• Gmlan l
• Gnd
• Ground
• Hvac ambient air temperature sensor (right front of engine compt)
• Hvac control module
• Ign volt
• J106
• J203
• J206 (instrument panel harness, approximately 14 cm from c207 breakout)
• J325
• J328
• L air tmp
• Left i/p junction block (left end of dash)
• Left temperature control
• Lf sunld
• Logic
• Low ref
• Lower auxiliary air temperature sensor (rear hvac module)
• Lw prss
• Mode cntrl
• Mode ctrl
• Mode down switch
• Mode up switch
• Pass sunld
• Pnk
• Power distribution system
• R air tmp
• Rear defogger ind
• Rear defogger switch
• Recir ctrl
• Recirc
• Recircu- lation ind
• Recircu- lation switch
• Red
• Rer defg
• Right temperature control
• Sens sig
• Sns sig
• Spd ctrl
• Sw sig
• Tan
• Upper auxiliary air temperature sensor
• Upper left air temperature sensor
• Upper right air temperature sensor
• X11

Automatic A/C Wiring Diagram (2 of 4) for Cadillac Escalade EXT 2009

List of elements for Automatic A/C Wiring Diagram (2 of 4) for Cadillac Escalade EXT 2009:

• (a/c compressor) a/c compressor clutch
• (left side of dash) body control module (bcm)
• (left side of engine compt) engine control module (ecm)
• 4a1
• 4a2
• 4a3
• 4a4
• 4a5
• 4a6
• 4b2
• 4b3
• 4b5
• 4b6
• 5-volt ref
• A/c cmprsr fuse 17 10a
• A/c cmprsr relay
• A4 x5
• Aux hvac-ign fuse 48 10a
• Coil ctrl
• Computer data lines system
• Data bus+
• Data bus-
• E x4
• Engine coolant temperature (ect) sensor (front of left cylinder head) b
• G102 (lower left front of engine)
• Hot at all times
• Hvac batt fuse 39 10a
• Hvac blwr fuse 70 40a
• Hvac-ign fuse 55 10a
• J219 (w/ heated steering wheel)
• Low ref
• Pnk
• Red
• Right i/p junction block (right end of dash)
• Rly ctrl
• Run/ crank relay
• Sens sig
• Tan
• Under- hood fuse block (left side of engine compt)

Automatic A/C Wiring Diagram (3 of 4) for Cadillac Escalade EXT 2009

List of elements for Automatic A/C Wiring Diagram (3 of 4) for Cadillac Escalade EXT 2009:

• (a/c high pressure hose) a/c refrigerant pressure sensor
• (bottom left side of hvac module) lower right air temperature sensor
• (left side of hvac module) lower left air temperature sensor
• 87a
• Fan cntrl relay
• Fan hi relay
• Fan lo relay
• Fan-1 fuse 57 40a
• Fan-2 fuse 60 40a
• G100 (lower left radiator support)
• Hot at all times
• J100
• J101
• Left air temperature actuator (under left side of hvac module)
• Left cooling fan (behind radiator)
• Mode actuator (left side of hvac module)
• Pnk
• Pwr/ trn relay
• Recirculation actuator (upper right of hvac module)
• Right air temperature actuator (top of hvac module)
• Right cooling fan (behind radiator)
• Right radiator support) g101
• Tan
• Under- hood fuse block (left side of engine compt)

Automatic A/C Wiring Diagram (4 of 4) for Cadillac Escalade EXT 2009

List of elements for Automatic A/C Wiring Diagram (4 of 4) for Cadillac Escalade EXT 2009:

• (or pnk)
• (rear hvac blower motor) auxiliary blower motor control module
• 5v ref
• Auto switch
• Auxiliary air temperature actuator (rear hvac module assembly)
• Auxiliary blower motor (long wheel base: rear of rear hvac module) (short wheel base: right rear of passenger compt)
• Auxiliary inside air temperature sensor
• Auxiliary mode actuator (rear hvac module)
• Blower speed down switch
• Blower speed up switch
• Computer data lines system
• G200 (right front of hvac case)
• G402 (right "d" pillar)
• Gmlan
• Gnd
• Hot at all times
• Hvac control module
• I/p fuse block (left end of dash)
• J328
• Logic
• Low ref
• Mde cntrl
• Mode switch
• Mtr cntrl
• Pnk
• Rear hvac fuse 30a
• Rear seat audio (rsa) control (w/ rear seat & earphone jacks)
• Sns cntrl
• Spd ctrl
• Temp cntrl
• Temperature down switch
• Temperature up switch

Compressor Wiring Diagram for Cadillac Escalade EXT 2009

List of elements for Compressor Wiring Diagram for Cadillac Escalade EXT 2009:

• (a/c compressor) a/c compressor clutch
• 5-volt ref
• A/c cmprsr fuse 17 10a
• A/c cmprsr relay
• A/c ind
• A/c low pressure switch (a/c high pressure hose)
• A/c on
• A/c refrigerant pressure sensor (a/c high pressure hose)
• B(+)
• Computer data lines system
• Data bus+
• Data bus-
• Engine control module (ecm) (left side of engine compt)
• G102 (lower left front of engine)
• G103 (front of right cylinder head)
• G200 (right front of hvac case)
• Gmlan l
• Ground
• Hot at all times
• Hvac batt fuse 39 10a
• Hvac control module
• J105
• J106
• J203
• Logic
• Low ref
• Lw prss
• Rly ctrl
• Sens sig
• Tan
• Underhood fuse block (left side of engine compt)

Heated And Cooled Cup Holder Wiring Diagram for Cadillac Escalade EXT 2009

List of elements for Heated And Cooled Cup Holder Wiring Diagram for Cadillac Escalade EXT 2009:

• Backlight dimming ctrl
• Blower motor
• Body control module (bcm) (left side of dash)
• Computer data lines system
• Cool
• Dimming ctrl ind
• Exp/pto fuse 47 15a
• Forward
• G200 (right front of hvac case)
• Gmlan serial data bus +
• Gmlan serial data bus -
• Gnd
• Heat
• Heated & cooled cup holder
• Hot at all times
• Ign
• Ign volt
• Interior lights system
• J334
• Left i/p junction block (left end of dash)
• Logic
• Nca
• Rearward
• Red ind
• Tan
• Underhood fuse block (left side of engine compt)