Low Pressure Sensor / Switch: Service and Repair

REMOVAL
1. Disconnect and isolate the battery negative cable.

Fig.14 Low Pressure Cycling Clutch Switch Remove/Install - Typical:

2. Unplug the wire harness connector from the A/C low pressure switch on the top of the accumulator.
3. Unscrew the A/C low pressure switch from the fitting on the top of the accumulator.
4. Remove the O-ring seal from the accumulator fitting and discard.

INSTALLATION
1. Lubricate a new O-ring seal with clean refrigerant oil and install it on the accumulator 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 compressor in the vehicle.
2. Install and tighten the A/C low pressure switch on the accumulator fitting. The switch should be hand-tightened onto the accumulator fitting.
3. Plug the wire harness connector into the A/C low pressure switch.
4. Connect the battery negative cable.