Fleetwood V8-5.7L VIN P (1994)
A/C Signal: Description and Operation
A/C Request, Input
A/C Compressor Wiring Diagram.
Purpose:
This signal tells the PCM that the A/C selector switch in turned "ON". The PCM uses this information to adjust idle speed when the A/C is
working. If this signal is not available to the PCM, the A/C compressor will not engage.
Operation:
When the HVAC control assembly is placed in the A/C mode, a signal is sent to the A/C pressure cycling switch. If a predetermined amount of
pressure is present in the system, the pressure switch will allow the signal to pass to the PCM.