For 1990-2009 cars

### Removal Procedure

1. Discharge and recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
2. Remove the air cleaner. Set the air cleaner aside.
3. Disconnect the electrical connector of the A/C refrigerant pressure switch.
4. Remove the A/C refrigerant pressure switch (1) from the evaporator inlet (4) pipe.

### Installation Procedure

1. Install the A/C refrigerant pressure switch (1) to the evaporator inlet (4) pipe.
2. Connect the electrical connector of the A/C refrigerant pressure switch.
3. Install the air cleaner to the vehicle.
4. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
5. Operate the A/C system, and inspect for refrigerant leaks. Refer to Leak Testing .