Initial Inspection and Diagnostic Overview

1. Check condenser fins for blockage or damage. If the fins are clogged, clean them with pressurized water.

NOTE: Be careful not to damage the fins.




2. Make sure that drive belt is installed correctly. Check that the drive belt fits properly in the ribbed grooves.




3. Check drive belt tension. If the proper tensions are not maintained, belt slippage will greatly reduce air conditioning performance and drive belt life. To avoid such adverse effects, the following service procedure should be followed:
- Any belt that has operated for a minimum of one half-hour is considered to be a "used" belt. Adjust air conditioning drive belt at the time of new-car preparation.
- Check drive belt deflection at regular service intervals and adjust as needed.
4. Start the engine.
5. Turn ON the A/C Switch. Check the A/C operation up to each position of the blower switch.
6. Check magnetic clutch operation.
7. Check idle RPM increases.
When the magnetic clutch engages, idle RPM should be increased.




8. Check condenser fan motor operation.




9. If no cooling or is insufficient, inspect for leakage. Using a gas leak detector, inspect each component of the refrigeration system.