RAM 1500 Truck 4WD V8-5.9L VIN Z (2002)
Refrigerant Pressure Sensor / Switch: Testing and Inspection
A/C PRESSURE TRANSDUCER
A/C Pressure Transducer Voltage
The A/C pressure transducer is tested using a DRB III scan tool. Refer to the appropriate diagnostic information. Before testing the A/C pressure
transducer, be certain that the transducer wire harness connection is clean of corrosion and properly connected. For the air conditioning system to
operate, an A/C pressure transducer voltage reading between 0.451 and 4.519 volts is required. Voltages outside this range indicate a low or high
refrigerant system pressure condition to the Powertrain Control Module (PCM). The PCM is programmed to respond to a low or high refrigerant
system pressure by suppressing operation of the compressor. Refer to the A/C Pressure Transducer Voltage table for the possible condition indicated
by the transducer voltage readings.
