AIR CONDITIONING – Chevrolet Forward Control P12 1998 – SYSTEM WIRING DIAGRAMS

AIR CONDITIONING

4.3L

4.3L (VIN W), Air Conditioning Wiring Diagrams for Chevrolet Forward Control P12 1998

List of elements for 4.3L (VIN W), Air Conditioning Wiring Diagrams for Chevrolet Forward Control P12 1998:

• (engine harn, 13 cm from a/c compressor high pressure cutoff switch breakout)
• (engine harn, 30 cm from maf sensor breakout)
• (engine harness, near maf sensor)
• (provisions for body builder hvac system)
• A/c compressor clutch
• A/c compressor clutch relay (engine firewall relay bracket)
• A/c compressor high pressure cutoff switch (rear of a/c compressor)
• A/c compressor refrigerant pressure switch (a/c accumulator)
• A/c compressor refrigerant pressure switch (on a/c accumulator)
• A/c enable
• A/c ground
• A/c request
• Diode
• Eng-bat fuse 15a
• G112 (rear of left cylinder head)
• G200 (left interior bulkhead)
• Gauges fuse 20a
• Hot at all times
• Hot in run or start
• I/p fuse block
• Pnk
• R100 (engine harness, 30 cm from maf sensor breakout)
• S110 (engine harness, near bulkhead grommet)
• S124
• S125 (engine harness, 13 cm from a/c high pressure switch breakout)
• S132 (engine harness, near maf sensor)
• S142
• S143
• S144 (engine harness, near firewall grommet)
• Vehicle control module (left side of engine compt)

5.7L

5.7L (VIN R), Air Conditioning Wiring Diagrams for Chevrolet Forward Control P12 1998

List of elements for 5.7L (VIN R), Air Conditioning Wiring Diagrams for Chevrolet Forward Control P12 1998:

• (engine harn, 13 cm from a/c compressor high pressure cutoff switch breakout)
• (engine harn, 30 cm from maf sensor breakout)
• (engine harness, near maf sensor)
• (provisions for body builder hvac system)
• A/c compressor clutch
• A/c compressor clutch relay (engine firewall relay bracket)
• A/c compressor high pressure cutoff switch (rear of a/c compressor)
• A/c compressor refrigerant pressure switch (a/c accumulator)
• A/c compressor refrigerant pressure switch (on a/c accumulator)
• A/c enable
• A/c ground
• A/c request
• Diode
• Eng-bat fuse 15a
• G112 (rear of left cylinder head)
• G200 (left interior bulkhead)
• Gauges fuse 20a
• Hot at all times
• Hot in run or start
• I/p fuse block
• Pnk
• R100 (engine harness, 30 cm from maf sensor breakout)
• S110 (engine harness, near bulkhead grommet)
• S124
• S125 (engine harness, 13 cm from a/c high pressure switch breakout)
• S132 (engine harness, near maf sensor)
• S142
• S143
• S144 (engine harness, near firewall grommet)
• Vehicle control module (left side of engine compt)

6.5L

6.5L (VIN F), Air Conditioning Wiring Diagrams for Chevrolet Forward Control P12 1998

List of elements for 6.5L (VIN F), Air Conditioning Wiring Diagrams for Chevrolet Forward Control P12 1998:

• (body builder installed)
• (engine harn, near firewall grommet)
• (provisions for body builder hvac system)
• A/c compressor clutch
• A/c compressor control relay (right side of driver's island)
• A/c compressor high pressure cutoff switch (in high pressure line)
• A/c compressor refrigerant pressure switch (rear of a/c compressor)
• A/c enable
• A/c request
• Diode
• Eng-bat fuse 15a
• G206 (below driver's island)
• Gauges fuse 20a
• Hot at all times
• Hot in run
• I/p fuse block
• Pnk
• Powertrain control module (left side of driver's island)
• R100 (engine harness, 30 cm from maf sensor breakout)
• S115 (engine harness, near firewall grommet)
• S122 (engine harness, 20 cm from a/c compressor)
• S123 (engine harness, 25 cm from a/c compressor clutch)
• S140
• S141 (engine harness, near firewall grommet)
• S168
• S203 (i/p harness, near firewall grommet)

6.5L (VIN Y), Air Conditioning Wiring Diagrams for Chevrolet Forward Control P12 1998

List of elements for 6.5L (VIN Y), Air Conditioning Wiring Diagrams for Chevrolet Forward Control P12 1998:

• (engine harn, 13 cm from a/c compressor high pressure cutoff switch breakout)
• (provisions for body builder hvac system)
• A/c compressor clutch
• A/c compressor clutch relay (engine firewall relay bracket)
• A/c compressor high pressure cutoff switch (rear of a/c compressor)
• A/c compressor refrigerant pressure switch (on a/c accumulator)
• Control module)
• Diode
• Eng-bat fuse 15a
• G200 (left interior bulkhead)
• Hot at all times
• I/p fuse block
• S125 (engine harness, 13 cm from a/c high pressure switch breakout)
• S144 (engine harness, 19 cm from a/c compressor clutch relay breakout)
• Vehicle control module (left side of engine compt)
• W/ vcm
• W/o vcm

7.4L

7.4L (VIN J), Air Conditioning Wiring Diagrams for Chevrolet Forward Control P12 1998

List of elements for 7.4L (VIN J), Air Conditioning Wiring Diagrams for Chevrolet Forward Control P12 1998:

• (body builder installed)
• (engine harn, 20 cm from cruise control module breakout)
• (provisions for body builder hvac system)
• A/c compressor clutch
• A/c compressor clutch relay (right side of driver's island)
• A/c compressor high pressure cutoff switch (rear of a/c compressor)
• A/c compressor refrigerant pressure switch (a/c accumulator)
• A/c enable
• A/c ground
• A/c request
• Diode
• Eng-bat fuse 15a
• G206 (below driver's island)
• Gauges fuse 20a
• Hot at all times
• Hot in run
• I/p fuse block
• Pnk
• R100 (engine harness, 30 cm from maf sensor breakout)
• S115 (engine harness, near firewall grommet)
• S122 (engine harness, 15 cm from a/c compressor)
• S123 (engine harness, 15 cm from a/c compressor clutch)
• S126
• S140
• S141 (iengine harness, near firewall grommet)
• S203 (i/p harness, near firewall grommet)
• Vehicle control module (center front of engine compt)