AIR CONDITIONING – Buick LeSabre Custom 2003 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Automatic A/C Wiring Diagram (1 of 2) for Buick LeSabre Custom 2003

List of elements for Automatic A/C Wiring Diagram (1 of 2) for Buick LeSabre Custom 2003:

• (hvac harn, 23.5 cm from c204 breakout)
• (hvac harn, 30 cm from c204 breakout) s221
• (hvac harn, 36.5 cm from c204 break- out)
• (i/p harn, 13 cm from sunload sensor assembly breakout)
• (i/p harn, 13.5 cm from hvac breakout)
• (i/p harn, 6.5 cm from sunload sensor assembly breakout)
• (i/p harn, 6.5 cm outside from radio breakout)
• (on right front door pillar)
• 5v ref
• A10
• A11
• A12
• Air temperature actuator (left) (on left side of hvac module)
• Air temperature actuator (right) (on right side of hvac module)
• Air temperature sensor (inside) (on dash, right of steering column)
• Air temperature sensor (lower left) (behind left dash air discharge vent)
• Air temperature sensor (lower right) (behind right dash air discharge vent)
• Air temperature sensor (outside) (on hood latch support)
• Air temperature sensor (upper left) (behind left dash air discharge vent)
• Air temperature sensor (upper right) (behind right dash air discharge vent)
• Amb air temp sig
• Amb light sens
• Backlight lamps ctrl
• Battery
• Blwr sp ctrl
• C1 a1
• C11
• C12
• C13
• C3 a7
• C3 d12
• Class 2 serial
• Clock sig
• Computer data lines system
• D11
• D16
• Driver solar sig
• G100 (left side of engine)
• G201
• Grd
• Ground
• Hot at all times
• Hot in on
• Hvac (batt) fuse 37 10a
• Hvac blo fuse 2 30a
• Hvac control module
• Hvac fuse 33 10a
• Ign 3 fuse 34 10a
• Ign 3 volt
• In air temp sig
• Instrument panel integration module (ipm) (behind left side of dash)
• Interior lights system
• Lft air door sig
• Lft temp dr ctrl
• Low ref
• Lower lft temp sig
• Lower rt temp sig
• Mod sig
• Mode actuator (on left side of hvac module)
• Mode door ctrl
• Mode dr pos sens
• Pass mdl fuse 25 10a
• Pass solar sig
• Rear fuse block (under left rear seat)
• Recirc door ctrl
• Recirc door sig
• Recirculation actuator (under right side of dash, right of blower motor)
• Rt air door sig
• Rt temp dr ctrl
• S204
• S205
• S208
• S222
• S253
• Solid state
• Splice pack sp100
• Splice pack sp201
• Sunload sensor assembly (on top center of dash)
• Tan
• Upper lh temp sig
• Upper rt temp sig

Automatic A/C Wiring Diagram (2 of 2) for Buick LeSabre Custom 2003

List of elements for Automatic A/C Wiring Diagram (2 of 2) for Buick LeSabre Custom 2003:

• (engine harn, 6.5 cm from iac valve breakout)
• 5v ref
• A/c clu fuse 26 15a
• A/c clu relay 32
• A/c compressor clutch
• A/c compressor clutch diode
• A/c refrigerant pressure sensor (behind a/c compressor, on a/c line)
• A10
• A11
• A12
• B10
• B11
• Bat
• Battery
• Blower control processor (at right front side of blower motor)
• Blower motor (under right side of dash, above sound insulator)
• Blwr mtr grd
• Blwr sp input
• Blwr volt
• C10
• C11
• Class 2 serial
• Clutch rly ctrl
• Cntl sig
• Computer data lines system
• Cool fan 1 fuse 30a
• Cool fan 2 fuse 46 30a
• Coolfan 1 (low speed) relay 40
• Coolfan 2 (high speed) relay 37
• Coolfan s/p relay 39
• D10
• Dash integration module (dim) (behind right side of dash, under sound insulator)
• E10
• E11
• Ect sens grd
• Ect sens sig
• Engine controls system
• Engine coolant temperature sensor (on rear of
• Engine, near thermostat housing)
• F11
• Front passenger door module (fpdm)
• G10
• G100 (left side of engine)
• G103 (on inner body panel)
• G11
• G201 (on right front door pillar)
• Grd
• Ground
• High spd fan ctrl
• Hot at all times
• Hot in on
• Inflatable restraint steering wheel module coil
• Interior lights system
• Left cooling fan
• Low spd fan ctrl
• Passenger temperature control assembly
• Pdm low side input
• Pnk
• Powertrain control module (pcm) (in air cleaner housing)
• Right cooling fan
• Right side steering wheel controls
• S106
• S602 (right front door harn, 10 cm from door module connector breakout)
• Sensor grd
• Sensor signal
• Sound systems
• Speed cntl
• Splice pack sp100
• Splice pack sp103
• Splice pack sp201
• Steering column fuse holder
• Sw grd
• Sw1
• Sw2
• Sw3
• Sw4
• Switch fuse 2a
• T10
• T11
• Tan
• Underhood fuse block (right front side of engine compt)
• V10
• V11

Compressor Wiring Diagram for Buick LeSabre Custom 2003

List of elements for Compressor Wiring Diagram for Buick LeSabre Custom 2003:

• (engine harn, 6.5 cm from iac valve breakout)
• (in engine harn, 18 cm from a/c compressor clutch connector breakout) s108
• 5v ref
• A/c clu fuse 26 15a
• A/c clu relay
• A/c compressor clutch
• A/c compressor clutch diode (near a/c compressor)
• A/c refrigerant pressure sensor (behind a/c compressor, on a/c line)
• Class 2 serial
• Clutch rly ctrl
• Computer data lines system
• Engine controls system
• G100 (left side of engine)
• Hot at all times
• Hot in on
• Low ref
• Powertrain control module (pcm) (in air cleaner housing)
• S106
• Sensor signal
• Splice pack sp100
• T10
• T11
• Underhood fuse block (right front side of engine compartment)
• V10
• V11

Manual A/C Wiring Diagram (1 of 2) for Buick LeSabre Custom 2003

List of elements for Manual A/C Wiring Diagram (1 of 2) for Buick LeSabre Custom 2003:

• (hvac harn, 30 cm from c204 breakout) s221
• (i/p harn, 6.5 cm outside from radio breakout)
• 5v ref
• A10
• A11
• A12
• A13
• A14
• A15
• A16
• Air temp dr ctrl
• Air temperature actuator (left front side of blower motor)
• Ambient light
• Anti-lock brakes system
• B10
• B11
• B12
• B13
• B14
• B15
• B16
• Backlight ctrl
• Batt
• Battery
• Blower control module (under right side of dash, above blower motor)
• Blower motor (under right side of dash, above sound insulator)
• Blwr mtr grd
• Blwr sp input
• Blwr speed cntrl
• Blwr volt
• C1 a10
• Class 2 serial
• Computer data lines system
• D12
• Dimmer sw sig
• G200 (on left front door pillar)
• G201 (on right front door pillar)
• Grd
• Headlights system
• Hot at all times
• Hot in on
• Hvac batt fuse 37 10a
• Hvac blo fuse 2 30a
• Hvac control module
• Hvac fuse 33 10a
• Ign 3 voltage
• Int lamp sw sig
• Interior lights system
• Key reminder sw
• Low ref
• Mode actuator (left side of hvac assembly)
• Motor low ref
• Rear fuse block (under left rear seat)
• Recirc dr mtr
• Recirculation actuator (under right side of dash, to right of blower motor)
• S208 (i/p harn, 13 cm from sunload sensor assembly breakout)
• S222 (hvac harn, 23.5 cm from c204 breakout)
• S253
• Solid state
• Speed cntl
• Splice pack sp200
• Splice pack sp201
• Trac cntrl sw
• Twilight sentinel
• Warnings system

Manual A/C Wiring Diagram (2 of 2) for Buick LeSabre Custom 2003

List of elements for Manual A/C Wiring Diagram (2 of 2) for Buick LeSabre Custom 2003:

• (engine harn, 6.5 cm from iac valve breakout)
• (in engine harn, 18 cm from a/c clutch connector breakout) s108
• 5v ref
• A/c clu fuse 26 15a
• A/c clu relay 32
• A/c compressor clutch
• A/c compressor clutch diode (near a/c compressor)
• A/c refrigerant pressure sensor (behind a/c compressor, on a/c line)
• A10
• A11
• B10
• B11
• C10
• C11
• Class 2 serial
• Clutch rly ctrl
• Computer data lines system
• Cool fan 1 fuse 47 30a
• Cool fan 2 fuse 46 30a
• Coolfan 1 (low speed) relay 40
• Coolfan 2 (high speed) relay 37
• Coolfan s/p relay 39
• D10
• E10
• E11
• Ect sens grd
• Ect sens sig
• Engine controls system
• Engine coolant temperature (ect) sensor (on rear of
• Engine, near thermostat housing)
• F11
• G10
• G100 (left side of engine)
• G103 (on inner body panel)
• G11
• High spd fan ctrl
• Hot at all times
• Hot in on
• Left cooling fan motor
• Low ref
• Low spd fan ctrl
• Powertrain control module (pcm) (in air cleaner housing)
• Right cooling fan motor
• S106
• Sensor signal
• Splice pack sp100
• Splice pack sp103
• T10
• T11
• Underhood fuse block (right front side of engine compartment)
• V10
• V11