Diagnosis And Testing - A/C Pressure Transducer: Notes
WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
The A/C pressure transducer connector terminals can be damaged by probing tools during system diagnosis and repair. Failure to use the correct mating terminals or pin gauge will cause the terminal contacts to spread and will result in a loss of continuity.
The A/C pressure transducer is tested using a DRBIII(R) scan tool. Refer to ELECTRONIC CONTROL MODULES . 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 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 A/C compressor. Refer to the A/C PRESSURE TRANSDUCER VOLTAGE CHART for the possible conditions indicated by the transducer voltage reading.