Powertrain Control Module (Pcm)

The A/C compressor clutch is controlled by the PCM. The PCM can enable or disable the compressor clutch based upon inputs from the HVAC module, internal data to the PCM or the A/C pressure transducer.

The gasoline engine PCM is mounted to a bracket on the in-board side of the washer reservoir. The diesel engine PCM is located on a bracket between the battery tray and the PDC in the engine compartment.

Inputs

• A/C pressure transducer signal
• Compressor request

Outputs

• A/C pressure transducer 5-volt supply
• A/C pressure transducer ground
• A/C clutch control