AIR CONDITIONING – Hummer H2 2009 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 3) for Hummer H2 2009

List of elements for Automatic A/C Wiring Diagram (1 of 3) for Hummer H2 2009:

• (rear hvac harness) j442
• (rear hvac harness) j443
• (rear of center console) rear seat audio (rsa) controller
• 5-volt reference
• A/c low pressure switch (right side of a/c a
• A/c on ind
• A/c on switch
• Accumulator)
• Air request ind
• Air request switch
• Assembly ctrl
• Auto switch
• Aux hvac ign fuse 41 10a
• Auxiliary air temperature actuator (front of auxiliary hvac module)
• Auxiliary blower motor (rear of auxiliary hvac module)
• Auxiliary blower motor control module (rear of auxiliary hvac module)
• Auxiliary mode actuator (auxiliary hvac assembly)
• B(+)
• Computer data lines system
• Ctrl
• Defog rly ctrl
• Defogger system
• Door position sig
• Fan down switch
• Fan up switch
• Front defogger ind
• Front defogger switch
• G103 (on front of right cylinder head)
• G200 (on left side of dash, behind left kick panel)
• G203 (lower right side of dash, behind right kick panel)
• G410 (on passenger side rear of body, near "d" pillar behind trim panel)
• Gmlan serial data
• Gnd
• Ground
• Hot at all times
• Hot w/ run/crank relay energized
• Hvac batt fuse 33 10a
• Hvac blwr fuse 61 40a
• Hvac control module
• Hvac ign fuse 46 10a
• I/p fuse block (lower left of i/p)
• Ig voltage
• J215
• J441
• Left i/p junction block (lower left of dash)
• Left i/p junction block x11 (lower left of dash)
• Left temperature control
• Lo press sens sig
• Logic
• Logic speed down
• Low reference
• Mode
• Mode door ctrl
• Mode down switch
• Mode up switch
• Motor speed ctrl
• Off switch
• On/ off
• Pnk
• Position sens sig
• Power distribution system
• Rear defogger ind
• Rear defogger switch
• Rear hvac fuse 30a
• Recir door ctrl
• Recir- culation ind
• Recir- culation switch
• Red
• Right sw sig
• Right temperature control
• Sens sig
• Serial data
• Speed ctrl
• Speed up
• Sunload sens sig
• Tan
• Temp door ctrl
• Temp down
• Temp sens sig
• Temp up
• Underhood fuse block (left of engine compt)

Automatic A/C Wiring Diagram (2 of 3) for Hummer H2 2009

List of elements for Automatic A/C Wiring Diagram (2 of 3) for Hummer H2 2009:

• (battery & fuse block underhood) engine control module (ecm)
• (left side engine block) engine coolant temperature (ect) sensor
• (right lower dash) blower motor
• (right side of dash) blower motor control module
• (top center of dash) ambient light/ sunload sensor assembly
• 4a1
• 4a4
• 4a5
• 4a6
• 4b2
• 4b3
• 4b5
• 4b6
• 5v ref
• A/c clutch
• A/c cmprsr fuse 15 10a
• A/c cmprsr relay
• Ect sig
• G200 (on left side of dash, behind left kick panel)
• G203 (lower right side of dash, behind right kick panel)
• Gnd
• Headlights system
• Hi spd fan
• Hot at all times
• Left air temperature actuator (center of hvac module assembly)
• Left i/p junction block (lower left of dash)
• Left sunload sensor
• Lo spd fan
• Logic
• Low ref
• Mode actuator (left side of hvac assembly)
• Pnk
• Recirculation actuator (top front of hvac assembly)
• Red
• Right air temperature actuator (middle top of hvac assembly)
• Right i/p junction block (right of dash)
• Right sunload sensor
• Rly ctrl
• Sens sig
• Spd ctrl
• Tan
• Underhood fuse block (left of engine compt)

Automatic A/C Wiring Diagram (3 of 3) for Hummer H2 2009

List of elements for Automatic A/C Wiring Diagram (3 of 3) for Hummer H2 2009:

• (on high pressure line) a/c refrigerant pressure sensor
• (right front corner of vehicle on frame rail near front tow hook) g101
• (right front of engine) a/c compressor clutch
• 4a2
• 4a3
• 87a
• Cooling fan diode 1
• Cooling fan diode 2
• Fan 1 fuse 50 40a
• Fan 2 fuse 53 40a
• Fan control relay
• Fan hi relay
• Fan lo relay
• G100 (on left front frame body mount)
• G104 (at rear of left cylinder head)
• G203 (lower right side of dash, behind right kick panel)
• Hot at all times
• Hvac ambient air temperature sensor (right of radiator support)
• Inside air temperature sensor (left front headliner)
• J100
• J101
• J102
• J206
• J301
• Left engine cooling fan (left front of engine compt)
• Left i/p junction block (lower left of dash) x9
• Lower left air temperature sensor (middle left of dash)
• Lower right air temperature sensor (middle right of dash)
• Pwr/ trn relay
• Right engine cooling fan (right front of engine compt)
• Right i/p junction block (right of dash) x4
• Tan
• Underhood fuse block (left of engine compt)
• Upper left air temperature sensor (top rear of dash)
• Upper right air temperature sensor (top rear of dash)

Compressor Wiring Diagram for Hummer H2 2009

List of elements for Compressor Wiring Diagram for Hummer H2 2009:

• 5v ref
• A/c cmprsr fuse 15 10a
• A/c cmprsr relay
• A/c comp
• A/c compressor clutch (right front of engine)
• A/c low pressure switch (right side of a/c accumulator)
• A/c on ind
• A/c on switch
• A/c ref pre
• A/c refrigerant pressure sensor (on high pressure line)
• Cl rly ctrl
• Computer data lines system
• Data-
• G103 (on front of right cylinder head)
• G104 (at rear of left cylinder head)
• Gmlan ser data
• Hot at all times
• Hvac control module
• J102
• J103
• Lo press sens sig
• Logic
• Low ref
• Serial
• Serial data+
• Tan
• Underhood fuse block (left of engine compt)
• X1 sens sig engine control module (ecm) (battery & fuse block underhood)