Refrigerant Pressure Sensor / Switch: Service and Repair

REMOVAL

NOTE: It is not necessary to discharge the refrigerant system to replace the A/C pressure transducer.

1. Disconnect and isolate the negative battery cable.
2. Disconnect the wire harness connector from the A/C pressure transducer.

A/C Pressure Transducer:

3. Remove the A/C pressure transducer from the fitting on the liquid line.
4. Remove the O-ring seal from the A/C pressure transducer fitting and discard.

INSTALLATION

NOTE: Replace the O-ring seal before installing the A/C pressure transducer.

1. Lubricate a new rubber O-ring seal with clean refrigerant oil and install it on the A/C pressure transducer fitting. Use only the specified O-rings as they are made of a special material for the R-134a system. Use only refrigerant oil of the type recommended for the A/C compressor in the vehicle.
2. Install the A/C pressure transducer onto the liquid line fitting. The transducer should be hand-tightened securely.
3. Connect the wire harness connector to the A/C pressure transducer.
4. Reconnect the negative battery cable.