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Home >> Oldsmobile >> 2003 >> Aurora >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> System Tests >> Mil Always On >> Description

Mil Always On: Description

Voltage is supplied to the Malfunction Indicator Lamp (MIL). The Powertrain Control Module (PCM) turns the MIL ON by grounding the MIL control circuit.

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