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Home >> Saturn >> 2003 >> LW300 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> System Test >> Malfunction Indicator Light Always On >> Circuit Description
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Circuit Description

Battery positive voltage is supplied directly to the Malfunction Indicator Light (MIL). The Engine Control Module (ECM) turns the MIL ON by grounding the MIL control circuit.

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