Serial Data Link Illumination

If the Engine Control Module (ECM) -- recognizes a malfunction that leads to increased emissions values, it indicates them by lighting the Malfunction Indicator Lamp (MIL) -- which is located in the instrument cluster.

The Engine Control Module (ECM) -- switches on the Malfunction Indicator Lamp (MIL) -- after the ignition is switched on. Shortly after the engine is started, The Malfunction Indicator Lamp (MIL) -- goes out if the Engine Control Module (ECM) -- does not detect a malfunction that increases the emissions values.

If the Engine Control Module (ECM) -- recognizes a malfunction that leads to increased emissions during the operation of the engine, the Engine Control Module (ECM) -- switches on the Malfunction Indicator Lamp (MIL) -- and an entry is stored in the DTC memory of the Engine Control Module (ECM) --.