FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM
:
Car repair manuals for everyone.
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Mercury
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1992
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Cougar/XR7 V6-232 3.8L
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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A/C Signal
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Description and Operation
A/C Signal: Description and Operation
The Electronic Control Assembly
(ECA)
monitors the A/C clutch apply signal. The ECA uses this signal to adjust the Idle Speed Control By-Pass Air
(ISC-BPA)
valve to maintain the proper
idle speed
.