Refrigerant Pressure Sensor / Switch: Testing and Inspection

1. With engine running and A/C on, conduct continuity test while measuring pressure.
2. For low pressure side, ensure test lamp turns off when pressure is decreasing to 26-31 psi and turns on when pressure is increasing to 26-34 psi.
3. For high pressure side, ensure test lamp turns off when pressure is increasing to 356-412 psi and turns on when pressure is decreasing to 270-327 psi.