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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 126 (Engine Controls And Fuel - 3.6L (LF4) - Description And Operation) >> Description and Operation >> Engine Control Module Description >> Malfunction Indicator Lamp (MIL)

Malfunction Indicator Lamp (MIL)

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The malfunction indicator lamp (MIL) is inside the instrument panel cluster (IPC). The MIL is controlled by the ECM and illuminates when the ECM detects a condition that affects vehicle emissions.

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