Malfunction Indicator Lamp

MALFUNCTION INDICATOR LAMP





Description





When emission-related ECU detects a malfunction in the emission control systems components and/or the powertrain control components (which affect vehicle emissions), it turns on/blinks MIL to inform the driver that a malfunction has been detected.
1. The MIL illuminates when ignition switch is turned ON (engine is not running).

NOTE:
Check the MIL circuit if MIL does not illuminate. SEE Diagnosis Procedure.
2. When the engine is started, the MIL should go off.

NOTE:
If MIL continues to illuminate/blink, perform self-diagnoses and inspect/repair accordingly because an emission-related ECU has detected a malfunction in the emission control systems components and/or the powertrain control components (which affect vehicle emissions).




Component Function Check
1.CHECK MIL FUNCTION
1. Turn ignition switch ON.
2. Check that MIL illuminates.
Is the inspection result normal?
YES - INSPECTION END
NO - Go to SEE Diagnosis Procedure.




Diagnosis Procedure
1.CHECK DTC
Check that DTC UXXXX is not displayed.
Is the inspection result normal?
YES - GO TO 2.
NO - Perform trouble diagnosis for DTC UXXXX.
2.CHECK DTC WITH "UNIFIED METER AND A/C AMP."
.
Is the inspection result normal?
YES - GO TO 3.
NO - Perform trouble diagnosis for DTC indicated.
3.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
Is the inspection result normal?
YES - Replace combination meter. Removal And Installation.
NO - Repair or replace malfunctioning part.