A/C Cutout Signal

The Powertrain Control Module (PCM) can prevent the engagement of the A/C compressor clutch through the A/C compressor control module. The PCM provides a ground signal to the A/C compressor control module that enables the A/C compressor control module to operate the A/C compressor clutch relay. The PCM allows the A/C compressor clutch to operate at customer request except during any of the following conditions:
^ The PCM did not receive the A/C request input (idle-up signal) from the A/C compressor control module.
^ Wide open throttle (WOT) engine operation.
^ ECT sensor indicates that the engine coolant temperature is more than 110°C (230°F).
^ Engine speed is less than 500 RPM or more than 6500 RPM.