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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Controls - 3.6L - Introduction) >> Description and Operation >> Engine Control Module (ECM) Description >> Malfunction Indicator Lamp (MIL)

Malfunction Indicator Lamp (MIL)

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

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