High 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 air filter from the rear A/C evaporator housing.
3. Recover the refrigerant from the rear refrigerant system.
4. Remove the cover from the rear A/C condenser housing.

Rear A/C High Pressure Switch:

5. Disconnect the wire harness connector from the rear A/C high pressure switch.
6. Remove the rear A/C high pressure switch and install a plug into, or tape over the opened rear discharge line fitting.

INSTALLATION

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

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