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Home >> Toyota >> 2020 >> Corolla L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 29 (Engine Control System (M20A-FKS) - Circuit Tests (5 Of 6)) >> SFI System >> MIL Circuit [09/2022 - 11/2022] >> Description

MIL Circuit [09/2022 - 11/2022]: Description

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The Malfunction Indicator Lamp (MIL) is used to indicate vehicle malfunctions detected by the ECM.

The MIL operation can be checked visually. When the engine switch is first turned on (IG), the MIL should be illuminated and should then turn off after the engine is started. If the MIL remains illuminated or is not illuminated, conduct the following troubleshooting procedure using the Techstream.