A/C Compressor Clutch Does Not Operate
Step 1 Measure voltage at compressor connector1. Run the engine at idle.
2. Turn A/C and blower switches ON.
3. Measure the voltage at the following terminal wire of the compressor connector.
Step 2 Measure voltage at magnetic clutch connector
1. Measure the voltage at the following terminal wire of the magnetic clutch connector.
Step 3 Check magnetic clutch
1. Disconnect the magnetic clutch connector.
2. Check for continuity between the magnetic clutch and a body ground.
Step 4 Measure voltage at A/C dual pressure switch
1. Measure the voltage at the following terminal wire of the A/C dual pressure switch.
Step 5 Measure refrigerant pressure
1. Turn the ignition switch OFF.
2. Connect the high-pressure hose to the manifold gauge to the high-pressure gauge fitting.
3. Measure the refrigerant pressure at the high- pressure side.
High-pressure side:
Above 65 psi (451 kPa)
4. If not as specified, check the refrigerant system. Refer to Step 2 Checking Refrigerant Pressure.
5. If correct, replace A/C dual pressure switch and cooler pipe No.2.