Refrigerant Pressure Sensor / Switch: Testing and Inspection

A/C Dual Pressure Switch

1. Turn ignition switch OFF.







2. Connect manifold gauge set and measure high pressure side refrigerant pressure.

High-pressure side: Above 88 psi (608 kPa)

3. If not as specified, check refrigerant system.
4. If correct, go to next step.
5. Disconnect A/C dual pressure switch connector.




6. Check for continuity of switch.




7. If not as specified, replace switch.