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Home >> Mercury >> 1994 >> Tracer L4-116 1.9L SOHC >> Repair and Diagnosis >> Heating and Air Conditioning >> Compressor HVAC >> Compressor Clutch >> Description and Operation >> A/C Clutch (ACC) Signal Operation

A/C Clutch (ACC) Signal Operation

OPERATION
The Powertrain Control Module (PCM) monitors the A/C Clutch (ACC) apply signal.

The PCM uses this signal to adjust the Idle Air Control-Bypass Air (IAC-BPA) valve to maintain the proper idle speed.
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