Clutch

A/C Clutch Circuit Diagrams:

Operation of the A/C compressor clutch is dependent on the ambient temperature and signals from the engine computer. The engine computer will interrupt the A/C compressor operation when certain conditions exist. The A/C compressor clutch can be shut off (or kept off) for several seconds at engine start-up, at high engine speeds, during acceleration when the engine coolant temperature exceeds a predetermined temperature, and during low engine die conditions. Refer to Pinpoint Test A - A/C Compressor Clutch Circuit Diagnosis Pinpoint Tests and, if necessary, the Powertrain Control/Emissions Diagnosis to correct an inoperative compressor clutch condition. The ambient temperature must also be above approximately 10° C (50° F) for the A/C compressor to operate.