Refrigerant Pressure Sensor / Switch: Service and Repair

A/C PRESSURE TRANSDUCER

REMOVAL

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

1. Disconnect and isolate the battery negative cable.

A/C Pressure Transducer - Typical:

2. Disconnect the wire harness connector from the A/C pressure transducer.
3. Remove the A/C pressure transducer from the fitting on the A/C discharge line.
4. Remove the O-ring seal from the A/C pressure transducer fitting and discard.

INSTALLATION

NOTE: Use only the specified O-ring as it is made of special material for R-134a. Use only refrigerant oil of the type required for the A/C compressor.

1. Lubricate a new rubber O-ring seal with clean refrigerant oil and install it on the A/C pressure transducer fitting.
2. Install the A/C pressure transducer onto the A/C discharge line. Hand-tighten the transducer securely.
3. Connect the wire harness connector to the A/C pressure transducer.
4. Reconnect the negative battery cable.