Component Tests and General Diagnostics

1. Perform oil return operation.

2. Remove compressor from vehicle.

Draining Oil From Compressor:

3. Drain the oil from the compressor through the discharge and suction ports, measure and record the amount.

4. If the amount of oil drained is much less than 70 ml (2.35 fl. oz.), some refrigerant may have leaked out

5. Check the compressor oil for contamination.