Compressor HVAC: Testing and Inspection

ON-VEHICLE INSPECTION

1. INSTALL MANIFOLD GAUGE SET

2. START ENGINE
3. INSPECT COMPRESSOR FOR METALLIC SOUND
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.

4. INSPECT PRESSURE OF REFRIGERATION SYSTEM
Refer to Heating and Air Conditioning Testing and Inspection Procedures.
Heating and Air Conditioning

5. STOP ENGINE
6. 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.

7. REMOVE MANIFOLD GAUGE SET