Refrigerant Pressure Sensor / Switch: Testing and Inspection

ON-VEHICLE INSPECTION

1. CHECK A/C PRESSURE SENSOR




a. Check the wire harness.
1. Disconnect the connector from the pressure sensor.




2. Measure the resistance of the wire harness side connector.




3. Measure the voltage of the wire harness side connector.

b. Check the pressure sensor.




1. Set the manifold gauge.
2. Connect the connector to the pressure sensor.
3. Warm up the engine.
4. A/C switch is turned ON.




5. Measure the resistance according to the value(s) in the table.

If the result is not as specified, replace the sensor.