Low Pressure Sensor / Switch: Service and Repair
SWITCH-A/C LOW PRESSUREREMOVAL
NOTE: It is not necessary to discharge the refrigerant system to replace the A/C low pressure switch.
1. Disconnect and isolate the battery negative cable.
2. Disconnect the wire harness connector (3) from the A/C low pressure switch (2).
3. Remove the A/C low pressure switch from the A/C accumulator (1) and remove and discard the O-ring seal.
INSTALLATION
1. Lubricate a new O-ring seal with clean refrigerant oil and install it onto 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 A/C compressor in the vehicle.
2. Install the A/C low pressure switch (2) onto the top of the A/C accumulator (1). Hand-tightened the switch securely.
3. Connect the wiring harness connector (3) to the A/C low pressure switch.
4. Reconnect the battery negative cable.