High Pressure Sensor / Switch: Service and Repair
A/C HIGH PRESSURE SWITCHNOTE: LHD model shown in illustration. RHD models similar.
REMOVAL
NOTE: It is not necessary to discharge the refrigerant system to replace the A/C high pressure switch.
1. Disconnect and isolate the negative battery cable.
2. Disconnect the wire harness connector (1) from the A/C high pressure switch (2) located on the A/C discharge line (3) near the A/C compressor (4).
3. Remove the A/C high pressure switch from the A/C discharge line and remove and discard the O-ring seal.
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 high pressure switch fitting.
2. Install the A/C high pressure switch (2) onto the A/C discharge line (3) near the A/C compressor (4). Hand-tightened the switch securely.
3. Connect the wire harness connector (1) to the A/C high pressure switch.
4. Reconnect the negative battery cable.