High Pressure Sensor / Switch: Service and Repair

Function
Switches A/C compressor clutch OFF if system pressure is too high.
- Switch opens (compressor OFF): 28.2 - 31.0 bar (409 - 449 psi).
- Switch closes (compressor ON): 10.3 - 17.3 bar (149 - 251 psi).
- Switch identified by red housing, located on left side of condenser.

Removing And Installing
- Remove electrical connector and remove high pressure switch. Refrigerant system remains closed (valve under switch).








- Install new O-ring -A- (9.3 mm x 1.8 mm). Tightening torque: 5 Nm (44 in lb).

NOTE: Only use O-rings specified for use with R-12 refrigerant and refrigerant oil.

- DO NOT reuse O-rings, always replace.
- Lubricate O-rings with A/C refrigerant oil before installing
- Always use correct size O-ring.
- During installation, ensure proper seat in groove.
- Keep work area, components and O-rings clean.