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Home >> Chevrolet >> 2003 >> Impala Base, 3.4 E >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics - 3.4L >> System Tests >> Mil Always On >> Circuit Description

Circuit Description

Ignition voltage is supplied directly to the Malfunction Indicator Light (MIL). The PCM turns the MIL ON by grounding the MIL control circuit.

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