Low Pressure Sensor / Switch: Service and Repair

REMOVAL

WARNING: REFER TO THE APPLICABLE WARNINGS AND CAUTIONS FOR THIS SYSTEM BEFORE PERFORMING THE FOLLOWING OPERATION. FAILURE TO FOLLOW THE WARNINGS AND CAUTIONS COULD RESULT IN POSSIBLE PERSONAL INJURY OR DEATH.

1. Disconnect and isolate the negative battery cable.
2. Remove the cover from the rear A/C evaporator housing.
3. Recover the refrigerant from the rear refrigerant system.

Rear A/C Low Pressure Switch:

4. Remove the insulating tape from around the area of the rear A/C low pressure switch.
5. Disconnect the wire harness connector from the rear A/C low pressure switch.
6. Remove the rear A/C low pressure switch and install a plug into, or tape over the opened rear suction line fitting.

INSTALLATION

NOTE: Replacement of the PTFE thread sealing tape is required anytime the rear A/C low pressure switch is removed from the rear suction line line. Failure to replace the sealing tape could result in a rear refrigerant system leak.

1. Remove the tape or plug from the rear suction line fitting.
2. Install PTFE thread sealing tape onto the rear A/C low pressure switch and install the switch onto the rear suction line. Tightened the A/C low pressure switch to 10 N.m (88 in. lbs.).
3. Connect the wiring harness connector to the rear A/C low pressure switch.
4. Install new insulating tape around the rear A/C low pressure switch area.
5. Reconnect the negative battery cable.
6. Evacuate the rear refrigerant system.
7. Charge the rear refrigerant system.
8. Install the cover onto the rear A/C evaporator housing.