Corvette V8-5.7L VIN G (1997)
A/C Signal: Description and Operation
A/C Request Signal
DESCRIPTION
The A/C request circuit signals the PCM when an A/C mode is selected at the A/C control head. The PCM uses this information enable the A/C
compressor clutch and to adjust the idle speed before turning ON the A/C clutch. If this signal is not available to the PCM, the A/C compressor will be
inoperative. For vehicles equipped with CJ2 A/C, the A/C request is sent via Class 2 Serial Data communications.
