Refrigerant Pressure Sensor / Switch: Testing and Inspection

HEATING / AIR CONDITIONING: AIR CONDITIONING PRESSURE SENSOR: ON-VEHICLE INSPECTION

1. INSPECT NO. 1 PRESSURE SWITCH

(a) Connect a manifold gauge set.





(b) Connect the positive (+) lead from the ohmmeter to terminal 1 and the negative (-) lead to terminal 2.

(c) Measure the resistance between terminals when refrigerant pressure is charged, as shown in the illustration.

If operation is not as specified, replace the pressure switch.

Text in Illustration