Camry XLE Sedan V6-3.0L (1MZ-FE) (1998)
Compressor Clutch: Testing and Inspection
1. INSPECT COMPRESSOR FOR METALLIC SOUND
a. Start engine.
b. Check if there is a metallic sound from the compressor when the A/C switch is on.
If metallic sound is heard, replace the compressor assembly.
2. INSPECT REFRIGERANT PRESSURE
See "ON-VEHICLE INSPECTION" of AIR CONDITIONING SYSTEM.
3. INSPECT COMPRESSOR LOCK SENSOR RESISTANCE
a. Disconnect the connector.
b. Measure resistance between terminals 1 and 2.
Standard resistance: 65 - 125 Ohms at 20 °C (68 °F)
If resistance is not as specified, replace the compressor assembly.
4. INSPECT VISUALLY FOR LEAKAGE OF REFRIGERANT FROM SAFETY SEAL
Using a gas leak detector, check for leakage of refrigerant. If there is any leakage, replace the compressor assembly.
5. MAKE THESE VISUAL CHECK:
a. Leakage of grease from the clutch bearing.
b. Signs of oil on the pressure plate If necessary, repair or replace.
6. INSPECT MAGNETIC CLUTCH BEARING FOR NOISE
a. Start engine.
b. Check for abnormal noise from near the compressor when the A/C switch is OFF.
If abnormal noise is being emitted, replace the magnetic clutch.
7. INSPECT MAGNETIC CLUTCH OPERATION
a. Disconnect the connector.
b. Connect the positive (+) lead from the battery to terminal 4 and the negative (-) lead to the body ground.
c. Check that the magnetic clutch is energized.
If operation is not as specified, replace the magnetic clutch.