A/C System Inspection

A/C System Inspection

Before troubleshooting any problem with the air conditioning system, do the following.

1. With the ignition switch in the LOCK (0) position, inspect the A/C components, pressure lines and hoses for stains that may indicate a refrigerant or a compressor oil leak.






2. Check the condenser for material clogging the fins or for damage to the fins:

- Carefully clean any material from the condenser fins with water and detergent.
- Be sure to dry the condenser completely.






3. Inspect the drive belt.
4. Make sure no material is blocking the airflow to the condenser.
5. Check the dust and pollen filter, and replace it if it is clogged.
6. Check the operation of the heater valve. Make sure the cable is adjusted properly.
7. Start the engine, turn the air conditioning system on, and allow it to normalize for a few minutes:

- Check that the A/C operates at each position of the blower fan switch (except OFF).
- Check that the compressor clutch is engaged. The pressure plate should be rotating at the same speed as the pulley.
- Check that the cooling fans operate when the compressor clutch is engaged.
- Check that the engine idle speed is correctly maintained when the A/C is switched on and off and the compressor clutch is engaged and disengaged.