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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.





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