Compressor HVAC: Testing and Inspection
ON-VEHICLE INSPECTION1. INSPECT COMPRESSOR FOR METALLIC SOUND
a. Check if there is abnormal metallic sound from the compressor when the A/C switch is ON and the compressor operates.
If abnormal metallic sound is heard, replace the compressor assembly.
2. INSPECT REFRIGERANT PRESSURE
3. INSPECT FOR LEAKAGE OF REFRIGERANT
a. Using a gas leak detector, check for leakage of refrigerant. If there is any leakage, replace the compressor assembly.
4. INSPECT W/PULLEY COMPRESSOR ASSEMBLY
a. Check operation of w/ pulley compressor assembly.
1. Start the engine.
2. Inspect the compressor pulley.
Standard: The compressor shaft rotates along with the pulley
5. INSPECT SOLENOID OF THE EXTERNALLY CHANGEABLE COMPRESSOR
a. Turn the ignition switch off.
b. Disconnect the connector.
c. Measure resistance between terminals 1 and 2.
Standard resistance: 10 to 11 Ohms
HINT: If resistance is not within the specified range, replace the compressor.