Air Conditioning Switch: Testing and Inspection

Refer to Heating and Air Conditioning/Service and Repair service adjustment procedures.AIR CONDITIONING SWITCH AND RELAY




The air conditioning switch relays battery voltage to the ECM when the air conditioning is turned on. When the air conditioning ON signal is input, the ECM drives the ISC Actuator and turns ON the ignition power transistor. Then, the air conditioning power relay coil is energized to turn on the relay switch, which activates the compressor magnetic clutch.

Circuit Diagram:

Using Hi-scan:

Harness Inspection:

AIR CONDITIONING INSPECTION

Refer to Heating and Air Conditioning/Service and Repair service adjustment procedures.