Operation CHARM
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Mercury
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1992
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Sable V6-182 3.0L
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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 and adjusts the Idle Speed Control By-Pass Air (ISC-BPA) valve as needed to maintain proper
idle speed
.