Alero L4-144 2.4L DOHC VIN T SFI (2000)
Body Control Module: Description and Operation
A/C Compressor Control
The Powertrain Control Module (PCM) and the BCM share the hardware and the software for control of the A/C compressor clutch. The PCM and the
BCM communicate this information over the Class 2 serial data line The BCM receives an A/C request signal from the heater A/C control assembly and
transmits this signal to the PCM in order to engage the A/C clutch.
