AIR CONDITIONING – Hummer H2 2003 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 2) for Hummer H2 2003

List of elements for Automatic A/C Wiring Diagram (1 of 2) for Hummer H2 2003:

• 5v ref
• A/c comp cl rly ctrl
• A/c comp fuse 10a
• A/c compressor clutch
• A/c compressor clutch relay
• A/c low pressure switch (right side of accumulator)
• A/c on
• A/c recirc
• A/c ref pre sens sig
• A/c refrigerant pressure sensor (in rear of a/c compressor)
• A10
• A11
• A12
• A5 c1
• Amb air temp sig
• Ambient air temperature sensor (right of radiator support)
• B c5
• B(+)
• B10
• B11
• B12
• Blower fuse 40a
• Blower motor (on hvac assembly)
• Blower motor control processor (behind right side of dash)
• Blower speed ctrl
• C4 e
• Class 2 ser data
• Class 2 serial data
• D red
• F8 c1
• Frt def
• G104 (on top left rear of engine)
• G200 (near left kick panel)
• G203 (near right kick panel)
• Ground
• Hot at all times
• Hot in run
• Hot in run or start
• Hvac 1 fuse 10a
• Hvac control module (behind center of dash)
• Hvac/ ecas fuse 10a
• I/p fuse block (lower left side of dash)
• I/p junction block (lower right side of dash)
• I/p relay block (left side of dash)
• Ign 3
• Ign e fuse 10a
• Inside air temp sig
• Inside air temperature sensor assembly
• Inst lamp dim ctrl
• Interior lights system
• Left temp control
• Lo lt air temp sig
• Lo press sens sig
• Lo rt air temp sig
• Logic
• Low ref
• Lower left air temperature sensor (middle left side of dash, under left round discharge duct)
• Lower right air temperature sensor (middle right side of dash, in front of rectangular discharge duct)
• Lt temp door ctrl
• Mirrors system
• Mode
• Mode door ctrl
• Powertrain control module (left front of engine compt)
• Rear def
• Recir
• Recir door ctrl
• Recirc door po sig
• Red
• Right temp control
• Rt temp door ctrl
• S102 (in engine harn, 4 cm from knock sensor connector)
• S214 (i/p harn, 50.4 cm from junction of instrument cluster connector harn to i/p harn)
• S216 (i/p harn, 2.5 cm from junction of air temp- erature sensor)
• S301
• Sp205 (on left side of dash)
• Speed ctrl
• Tan
• Temp sen ass ctrl
• Underhood fuse block (left side of engine compt, near battery)
• Up lt air temp sig
• Up rt air temp sig
• Upper left air temperature sensor (at left side of dash panel)
• Upper right air temperature sensor (at right side of dash panel)

Automatic A/C Wiring Diagram (2 of 2) for Hummer H2 2003

List of elements for Automatic A/C Wiring Diagram (2 of 2) for Hummer H2 2003:

• Ambient light sens lo ref
• Ambient light sens sig
• Ambient light sensor
• Ambient light/ sunload sensor assembly (top center of dash)
• B12
• Body control module (top left side of dash, above i/p fuse block)
• Class 2 serial data
• I/p junction block (lower right side of dash)
• Lefft sunload sensor sig
• Left air temperature actuator (lower middle underside of hvac assembly)
• Left solar sensor
• Logic
• Mode actuator (left side of hvac assembly)
• Recirculation actuator (top front of hvac assembly)
• Right air temperature actuator (middle top of hvac assembly)
• Right solar sensor
• Right sunload sensor sig
• Tan

Compressor Wiring Diagram for Hummer H2 2003

List of elements for Compressor Wiring Diagram for Hummer H2 2003:

• 5v ref
• A/c comp cl rly ctrl
• A/c comp fuse 10a
• A/c compressor clutch
• A/c compressor clutch relay
• A/c low pressure switch (right side of accumulator)
• A/c on switch
• A/c ref pre sens sig
• A/c refrigerant pressure sensor (in rear of a/c compressor)
• A12
• B11
• Class 2 ser data
• Class 2 serial data
• G104 (on top left rear of engine)
• Hot at all times
• Hot in run or start
• Hvac control module (behind center of dash)
• Ign e fuse 10a
• Lo press sens sig
• Logic
• Low ref
• Powertrain control module (left front of engine compt)
• S102 (in engine harn, 4 cm from knock sensor connector)
• Sp205 (on left side of dash)
• Underhood fuse block (left side of engine compt, near battery)