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Home >> Honda >> 2003 >> Civic HX, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Fuel System & Emissions System (Hatchback)) >> System Description >> Electronic Control System >> Self-diagnosis

Electronic Control System: Self-diagnosis

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When an abnormality occurs in the signal from a sensor, the ECM supplies ground for the malfunction indicator lamp (MIL) and stores the diagnostic trouble code (DTC) in erasable memory. When the ignition is first turned on, the ECM supplies ground to the MIL for 15 to 20 seconds to check the MIL bulb condition. If all readiness code are not set the MIL will flash five times. If readiness codes set to complete the MIL will go out.

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