AIR CONDITIONING – Chevrolet Cobalt LT 2009 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

2.0L VIN X

2.0L VIN X, Compressor Wiring Diagram for Chevrolet Cobalt LT 2009

List of elements for 2.0L VIN X, Compressor Wiring Diagram for Chevrolet Cobalt LT 2009:

• 5v ref
• A/c cltch fuse 10a
• A/c cltch relay
• A/c compressor clutch (lower left front of engine)
• A/c compressor clutch diode
• A/c refrigerant pressure sensor (right front of engine compt, on a/c line, near compressor)
• A/c req sig
• A/c request indicator
• A/c request sig
• A/c request switch
• A4 x5
• Batt
• Body control module (bcm) (under center dash)
• Computer data lines system
• Ect sig
• Engine control module (ecm) (left side of engine compt)
• Engine coolant temperature (ect) sensor (right rear of engine block)
• G101 (left side of engine compt, under coolant reservoir)
• G203 (behind right side of dash)
• Gnd
• Hot at all times
• Hot w/ pwr/ trn relay energized
• Hot w/ run/ crank relay energized
• Hvac control module (center of dash, below radio)
• Hvac/ ip ign fuse 16 10a
• Hvac/pk3 fuse 10 10a
• Ign voltage
• Logic
• Low ref
• Pnk
• Power distribution system
• Press sens sig
• Rly ctrl
• Serial data
• Tan
• Underhood fuse block (engine compt, next to left strut tower)
• X3 f2

2.0L VIN X, Manual A/C Wiring Diagram (1 of 2) for Chevrolet Cobalt LT 2009

List of elements for 2.0L VIN X, Manual A/C Wiring Diagram (1 of 2) for Chevrolet Cobalt LT 2009:

• (hvac jumper harness, 4.9 cm from hvac control assembly) j261
• (not used)
• 5 volt ref
• A/c req sig
• A/c request indicator
• A/c request sig
• A/c request switch
• Air temp dr cntrl
• Air temp dr pos
• Batt
• Bcm 3 fuse 30a
• Blower motor (under right side of dash)
• Blower motor resistor (under right side of dash, next to blower motor)
• Blower motor switch
• Body control module (bcm) (under center dash)
• C2 x4
• Close recir door
• Computer data lines system
• Defogger system
• Fresh air indicator
• Fresh air switch
• G203 (behind right side of dash)
• Gnd
• Ground
• High
• Hot at all times
• Hot w/ run/ crank relay energized
• Hvac control module (center of dash, below radio)
• Hvac relay
• Hvac/ ip ign fuse 16 10a
• Hvac/pk3 + fuse 10 10a
• Ign voltage
• Interior lights system
• Logic
• Low
• Mode door cntrl
• Mode door pos sig
• Mode switch
• Off
• Open recir door
• Pnk
• Power distribution system
• Recir- culation indicator
• Recir- culation switch
• Rr defog relay cntrl
• Rr defog switch sig
• Serial data
• Tan
• Temperature control switch
• Underhood fuse block (engine compt, next to left strut tower)

2.0L VIN X, Manual A/C Wiring Diagram (2 of 2) for Chevrolet Cobalt LT 2009

List of elements for 2.0L VIN X, Manual A/C Wiring Diagram (2 of 2) for Chevrolet Cobalt LT 2009:

• 5v ref
• 87a
• A/c cltch fuse 10a
• A/c cltch relay
• A/c compressor clutch (lower left front of engine)
• A/c compressor clutch diode
• A/c refrigerant pressure sensor (right front of engine compt, on a/c line, near compressor)
• A1 x5
• A4 x5
• A6 x1
• Air temperature actuator (center of dash, left side of hvac module)
• Computer data lines system
• Cool fan 1 fuse 30a
• Cool fan 1 relay
• Cool fan 2 fuse 30a
• Cool fan 2 relay
• Cool fans relay
• Cooling fan rly ctrl hi sp cooling fan rly ctrl
• E10 x1
• Ect sig
• Engine control module (ecm) (left side of engine compt)
• Engine coolant temperature (ect) sensor (right rear of engine block)
• F10
• F2 x3
• G101 (left side of engine compt, under coolant reservoir)
• G111 (front of engine compt near cooling fans)
• Hot at all times
• Hot w/ pwr/ trn relay energized
• Left engine cooling fan
• Logic
• Low ref
• Mode actuator (center of dash, left side of hvac module)
• Pnk
• Press sens sig
• Recirculation actuator (right side of dash, above blower motor)
• Right engine cooling fan
• Rly ctrl
• Serial data
• Tan
• Underhood fuse block (engine compt, next to left strut tower)
• X1 a11

2.2L VIN H

2.2L VIN H, Compressor Wiring Diagram for Chevrolet Cobalt LT 2009

List of elements for 2.2L VIN H, Compressor Wiring Diagram for Chevrolet Cobalt LT 2009:

• 5v ref
• A/c cltch relay
• A/c clutch fuse 10a
• A/c compressor clutch (left front of engine)
• A/c compressor clutch diode
• A/c refrigerant pressure sensor (right front of engine compt, on a/c line, near compressor)
• A/c req sig
• A/c request indicator
• A/c request sig
• A/c request switch
• Batt
• Body control module (bcm) (under center dash)
• Computer data lines system
• Ect sig
• Engine control module (ecm) (left side of engine compt)
• Engine coolant temperature (ect) sensor (rear of engine)
• G101 (left side of engine compt, under coolant reservoir)
• G203 (behind right side of dash)
• Gnd
• Hot at all times
• Hot w/ pwr/ trn relay energized
• Hot w/ run/ crnk relay energized
• Hvac control module (center of dash, below radio)
• Hvac/ ip ign fuse 16 10a
• Hvac/pk3 + fuse 10 10a
• Ign voltage
• Logic
• Low ref
• Pnk
• Power distribution system
• Press sens sig
• Rly ctrl
• Serial data
• Tan
• Underhood fuse block (engine compt, next to left strut tower)
• X3 f2
• X5 a4

2.2L VIN H, Manual A/C Wiring Diagram (1 of 2) for Chevrolet Cobalt LT 2009

List of elements for 2.2L VIN H, Manual A/C Wiring Diagram (1 of 2) for Chevrolet Cobalt LT 2009:

• (in hvac jumper harness, 4.9 cm from hvac control assembly) j261
• (not used)
• 5 volt ref
• A/c req sig
• A/c request indicator
• A/c request sig
• A/c request switch
• Air temp dr cntrl
• Air temp dr pos
• Batt
• Bcm 3 fuse 30a
• Blower motor (under right side of dash)
• Blower motor resistor (under right side of dash, next to blower motor)
• Blower motor switch
• Body control module (bcm) (under center dash)
• Close recir door
• Computer data lines system
• Defogger system
• Fresh air indicator
• Fresh air switch
• G203 (behind right side of dash)
• Gnd
• Ground
• High
• Hot at all times
• Hot w/ run/ crnk relay energized
• Hvac control module (center of dash, below radio)
• Hvac relay
• Hvac/ ip ign fuse 16 10a
• Hvac/pk3 + fuse 10 10a
• Ign voltage
• Interior lights system
• Logic
• Low
• Mode door cntrl
• Mode door pos sig
• Mode switch
• Off
• Open recir door
• Pnk
• Power distribution system
• Recir- culation indicator
• Recir- culation switch
• Rr defog relay cntrl
• Rr defog switch sig
• Serial data
• Tan
• Temperature control switch
• Underhood fuse block (engine compt, next to left strut tower)
• X4 c2
• X4 f4

2.2L VIN H, Manual A/C Wiring Diagram (2 of 2) for Chevrolet Cobalt LT 2009

List of elements for 2.2L VIN H, Manual A/C Wiring Diagram (2 of 2) for Chevrolet Cobalt LT 2009:

• 5v ref
• A/c cltch fuse 10a
• A/c cltch relay
• A/c compressor clutch (left front of engine)
• A/c compressor clutch diode
• A/c refrigerant pressure sensor (right front of engine compt, on a/c line, near compressor)
• A1 x5
• A11
• Air temperature actuator (center of dash, left side of hvac module)
• Computer data lines system
• Cool fan 1 fuse 30a
• Cool fan 1 relay
• Cool fan 2 fuse 30a
• Cool fan 2 relay
• E10
• Ect sig
• Engine control module (ecm) (left side of engine compt)
• Engine coolant temperature (ect) sensor (rear of engine)
• Engine cooling fan
• F10
• G101 (left side of engine compt, under coolant reservoir)
• G111 (front of engine compt, near cooling fans)
• Hot at all times
• Hot w/ pwr/ trn relay energized
• Logic
• Low ref
• Mode actuator (center of dash, left side of hvac module)
• Pnk
• Press sens sig
• Recirculation actuator (right side of dash, above blower motor)
• Rly ctrl
• Rly out
• Serial data
• Tan
• Underhood fuse block (engine compt, next to left strut tower)
• X3 f2
• X5 a4