Inspection of Air Conditioning Components Installed on the Vehicle

PROCEDURE

1. Inspect the condenser fins for blockage and damage. If the fins are clogged, clean them with a pressurized stream of water.

Use care not to damage the fins.

2. Make sure the air conditioning compressor drive belt is installed correctly.

3. Check the tension of the air conditioning compressor drive belt. If the belt slips on the pulleys, the performance of the air conditioning system and the service life of the belt will decrease.

To prevent this, observe the following belt service procedure:

– any belt that has operated for at least 30 minutes is considered a used belt;
– check belt tension at the specified service intervals.
Check belt tension by applying a force of 98 N at a point midway between the pulleys, and measure the belt deflection.
Air conditioning compressor drive belt deflection when checking tension:
After belt operation: 8 mm
Used belt: 6–7 mm
New belt: 5–5.5 mm

4. Start the engine.
5. Turn on the air conditioning system by pressing the A/C switch. Check the operation of the air conditioning system in all fan speed switch positions.
6. Check the operation of the electromagnetic clutch.
7. Check the engine idle speed. When the electromagnetic clutch engages, the engine speed should increase.
8. Check the operation of the condenser fan.
9. If there is no cooling or cooling is insufficient, check the air conditioning system for leaks.