Low Pressure Sensor / Switch: Service and Repair

LOW PRESSURE CUT-OFF SWITCH

REMOVAL

1. Disconnect and isolate the battery negative cable.

Low Pressure Cut-Off Switch Remove/Install:

2. Unplug the wire harness connector from the low pressure cut-off switch on the suction line jumper near the filter-drier.

3. Unscrew the low pressure cut-off switch from the fitting on the suction line jumper.

4. Remove the O-ring seal from the suction line jumper fitting and discard.

INSTALLATION

1. Lubricate a new O-ring seal with clean refrigerant oil and install it on the suction line jumper 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 low pressure cut-off switch on the suction line jumper fitting. Tighten the switch to 4 Nm (2.9 ft. lbs.).

3. Plug the wire harness connector into the low pressure cut-off switch.

4. Connect the battery negative cable.