For 1990-2009 cars only
A/C Refrigerant Pressure Sensor
The electronic A/C refrigerant pressure sensor is mounted to the line between the condenser and the evaporator. The output to the PCM is variable and depends on the pressure inside the line. A higher pressure will result in a higher voltage out.
The PCM constantly monitors the A/C system pressure in order to achieve the following effects:
| • | Disengage the A/C clutch if the pressure is above 2700 kPa (440 psi). |
| • | Disengage the A/C clutch if pressure is below 285 kPa (38 psi). |
| • | Boost the idle air control in order to compensate for the A/C load at idle. |
| • | Control the cooling fan operation. |
Replace the pressure sensor if it fails. It is not repairable.
