Air Conditioning (A/C) Clutch

NOTE: This applies to OEM, factory installed A/C systems.

DESCRIPTION
The electromagnetic A/C clutch is energized when the A/C cycling switch closes. The switch is located on the suction accumulator/dryer. The closing of the switch completes the circuit to the clutch and draws it into engagement with the compressor driveshaft. The powertrain control module adjusts Electronic Pressure Control (EPC) pressure when the A/C clutch is engaged to compensate for additional load on the engine.

SYMPTOMS
- Failed "ON"-EPC pressure slightly low with A/C OFF.
- Failed "OFF"-EPC pressure slightly high with A/C ON.

DTC's
P1460