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Home >> Chevrolet >> 2002 >> Impala Police >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.8L >> System Tests >> Mil Inoperative >> Description

Mil Inoperative: Description

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Battery positive voltage is supplied directly to the Malfunction Indicator Lamp (MIL). The Powertrain Control Module (PCM) turns the MIL on by grounding the MIL control circuit. There should be a steady MIL with the ignition on and the engine off.