Refrigerant Pressure Sensor / Switch: Testing and Inspection

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

ON-VEHICLE INSPECTION

1. INSPECT A/C PRESSURE SENSOR
(a) Start the engine.
(b) Operate the air conditioning system.
(c) Disconnect the connector from A/C pressure sensor.
(d) Install the manifold gauge set Refrigerant.






(e) Connect the positive (+) lead from the three 1.5 V dry cell batteries to terminal 3 and negative (-) lead to terminal 1.
(f) Check the voltage between terminals 2 and 1 of A/C pressure sensor.
Voltage:
The voltage depends on the refrigerant pressure as shown in the chart.
If the voltage is not as specified, replace the sensor.