Refrigerant Pressure Sensor / Switch: Testing and Inspection

ON-VEHICLE INSPECTION
1. Disconnect connector of the dual pressure switch.
2. Install the manifold gauge set.
3. Observe the gauge reading to confirm that refrigerant is sufficient in the air conditioning system.

Dual Pressure Switch (E17):

4. If refrigerant is sufficient, check the continuity between the two terminals of the dual pressure switch shown in the figure. If defective, replace the dual pressure switch.

ADDITIONAL CHECKS
1. Check the condenser fins for brockage or damage. If fins are clogged, clean them with compressed air. If the fins are bent, straighten them with a screwdriver or a pair of pliers.

CAUTION: Be careful not to damage the fins

2. Check the condenser fittings for leakage. Repair or replace it necessary.