RAM 1500 Van V8-5.2L VIN Y (1999)
Low Pressure Sensor / Switch: Pressure, Vacuum and Temperature Specifications
The low pressure cut-off switch contacts are open when the suction pressure is about 48 to 90 kPa (7 to 13 psi) or lower. The switch contacts will close
when the suction pressure rises to about 103 to 172 kPa (15 to 25 psi) or above. Lower ambient temperatures, below about -1° C (30° F), will also cause
the switch contacts to open. This is due to the pressure/temperature relationship of the refrigerant in the system.
