Operation CHARM: Car repair manuals for everyone.

A/C Cutout Signal

The 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 NC compressor clutch relay. The PCM allows the NC compressor clutch to operate at customer request except during wide open throttle engine operation.