Grand Caravan V6-3.8L VIN L (2007)
Refrigerant Pressure Sensor / Switch: Testing and Inspection
A/C PRESSURE TRANSDUCER
The A/C pressure transducer is diagnosed using a DRBIII(R) scan tool.
Before testing the A/C pressure transducer, be certain that the transducer wire harness connection is clean of corrosion and properly connected. For the
A/C 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 A/C compressor. Refer to the A/C Pressure Transducer Voltage chart for the possible conditions
indicated by the transducer voltage reading.
