Initial Inspection and Diagnostic Overview

HOW IS THE MAGNETIC CLUTCH IS ENERGIZED





The general process how the magnetic clutch is energized is shown. (MFI only)

ON-VEHICLE INSPECTION





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:
1. 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.





2. Check drive belt tension at regular service intervals and adjust as needed.
4. Start the engine.
5. Turn On the A/C Switch. Check that the A/C operates at each position of the blower switch.
6. Check magnetic clutch operation.
7. Check idle RPM increasing. When the magnetic clutch engaged, idle RPM should be increased.





8. Check condenser fan motor rotation
9. If no cooling or it is insufficient, inspect for leakage. Using a gas leak detector, inspect each component of the refrigeration system.

CHARGING REFRIGERANT SYSTEM

NOTE: This step is to charge the system through the low pressure side with refrigerant in a vapor state. When the refrigerant container is placed right side up, refrigerant will enter the system as a vapor.





1. Attach an Air Conditioning Service Station as shown.
2. Open the low pressure valve. Adjust the valve so that the low pressure gauge does not read over 412 kPa (4.2 kg/Sq.cm, 50 psi)
3. Put the refrigerant in a pan of warm water on heat plate (maximum temperature 40 °C (104 °F)) to keep vapor pressure in the container slightly higher than vapor pressure in the system.





4. Run the engine at fast idle, and operate the air conditioner.

NOTE: Be sure to keep the container upright to prevent liquid refrigerant from being charged into the system through the suction side, resulting in possible damage to the compressor.

5. Charge the system to the specified amount. Then, close the low pressure valve.

Specified amount : 675 - 725g (1.50 - 1.61 lbs)