AIR CONDITIONING – Pontiac Montana 1999 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

Compressor Wiring Diagram for Pontiac Montana 1999

List of elements for Compressor Wiring Diagram for Pontiac Montana 1999:

• (lower front of engine) g125
• (on dash harness, in center of dash, approx 68 cm (27 in) from cigar lighter)
• (on dash harness, right side of dash, approximately 16 cm (6 in) from relay center breakout) s264
• (on engine harness, on top right side of radiator approximately 20 cm (8 in) from right engine coolant fan 1 motor breakout) s105
• (on right side of dash, secured on underside of cross car beam, left of heater-a/c vent) g201
• A/c clu diode
• A/c clu fuse 10a
• A/c clu relay
• A/c compressor clutch coil (part of a/c compressor)
• A/c compressor relay ctrl
• A/c on ind
• A/c on/off
• A/c request sig
• A/c request signal
• Battery
• Blower switch
• C11
• Defrost/ defogger input
• Fuse block (right side of dash, in right front door opening)
• Gnd
• Heater a/c control
• Hot at all times
• Hot in run
• Hot in run, bulb test & start
• Hvac/drl fuse 10a
• Ignition positive voltage
• Powertrain control module (pcm) (in engine compartment, secured in air cleaner assembly)
• Radio fuse 10a
• S202 (on dash harness, right side of dash, approximately 21 cm (8 in) from radio breakout)
• S213
• Solid state
• Underhood accessory wiring junction block (on right front of engine compartment)

Manual A/C Wiring Diagram (1 of 2) for Pontiac Montana 1999

List of elements for Manual A/C Wiring Diagram (1 of 2) for Pontiac Montana 1999:

• (engine harness, top right side of radiator approx 20 cm (8 in), from right engine coolant fan 1 motor breakout) s105
• (right side of dash) g201
• A/c clu diode
• A/c clu fuse 10a
• A/c clu relay
• A/c comp relay ctrl
• A/c compressor clutch coil (part of a/c compressor)
• A/c on ind
• A/c request signal
• A/c switch
• A10
• Air recirc
• Air source logic
• Blower motor (part of a/c heater module, behind left side of dash)
• Blower motor relay
• Blower motor resistor (part of a/c heater module, in front of blower motor)
• Blower motor resistors
• C10
• C11
• Compressor request logic
• Cool fan 1 maxifuse 30a
• Cool fan 1 relay
• Cool fan 2 maxifuse 30a
• Cool fan 2 relay
• Cool fan relay
• Coolant fan 1 rly ctrl
• Coolant fan 2 rly ctrl
• Defog enable
• Defog indicator
• Defog request
• Defogger indicator
• Defogger logic
• Defogger system
• Defrost/ defog
• F11
• Ground
• Heater-a/c control
• Hot at all times
• Hot in run, bulb test & start
• Ignition
• Illumination
• Interior lights system
• Left engine coolant fan motor 2 (mounted to rear of radiator)
• Nca
• Off
• Powertrain control module (pcm) (in engine compartment, secured in air cleaner assembly)
• Radio fuse 10a
• Rear defogger switch (on/off) momemtary switch
• Right engine coolant fan motor 1 (mounted to rear of radiator)
• Right side of dash, approximately 21 cm (8 in) from radio breakout) s202
• S213 (on dash harness, in center of dash, approximately 68 cm (27 in) from cigar lighter)
• Tan
• Temperature control
• Underhood accessory junction block (on right front of engine compartment)

Manual A/C Wiring Diagram (2 of 2) for Pontiac Montana 1999

List of elements for Manual A/C Wiring Diagram (2 of 2) for Pontiac Montana 1999:

• (body harness, in front of left rear wheelhouse, approx 48 cm (19 in) from left sliding door jamb switch) s345
• (lower left "b" pillar) g308
• (lower left "d" pillar) g999
• (not used)
• (on body harness, in front of left rear wheel- house) s343
• (on body harness, in front of left rear wheelhouse) s341
• (on dash harness, in center of dash, approx 68 cm (27 in) from cigar lighter) s213
• (on dash harness, right side of dash, approximately 16 cm (6 in) from relay center breakout) s264
• (right side of dash) g201
• 4 cm (2 in) from radio breakout) s230
• Auxiliary blower motor (behind left rear wheelhouse, part of auxiliary heater-a/c module)
• Auxiliary blower motor resistor (part of auxiliary heater-a/c module, rear of auxiliary blower motor)
• Auxiliary blower relay
• Auxiliary blower switch
• Auxiliary heater-a/c control
• Auxiliary temperature valve actuator (part of auxiliary heater-a/c module, below auxiliary blower motor)
• Electric air inlet actuator (on right side of dash, above blower motor)
• Electric slave actuator (on left side of heater a/c module)
• Frt hvac hi blwr cb 30a
• Frt hvac low/med blwr fuse 25a
• Fuse block (right side of dash, in right front door opening)
• Hot at all times
• Hot in run
• Hvac/drl fuse 10a
• Illum
• Interior lights system
• Logic
• Nca
• Off
• Rear
• Rear window wiper/washer & multi-function switch
• Rr hvac fuse 25a
• S252 (dash harness, center of dash, approximately 72 cm (28 in) from cigar lighter)
• S339 (on body harness, in front of left b-pillar, approximately 26 cm (10 in) from ground g308 breakout)
• S403 (body harness, left rear of body, on top of wheelwell, 13 cm (5 in) from top & rear clips)
• Temperature control