High-Pressure Cutoff Switch

High-Pressure Cutoff Switch

The high-pressure cutoff switch is used to interrupt A/C operation in the event of high system discharge pressures.

- The high-pressure cutoff switch is mounted on a Schrader valve-type fitting on the high-pressure side of the compressor manifold and tube assembly (3.0L and 4.0L engines) or the compressor to condenser discharge line (2.3L engine only).
- A valve depressor, located inside the threaded end of the high-pressure cutoff switch, presses on the Schrader valve stem.
- This allows the high-pressure cutoff switch to monitor the compressor discharge pressure.
- When the compressor discharge pressure rises, the switch contacts open, interrupting A/C operation. When the pressure drops, the contacts close. For specifications regarding operating pressure(s), refer to Heating and Air Conditioning.
- It is not necessary to recover the refrigerant to remove the pressure cutoff switch.