Description and Operation: Description: Self-Diagnosis
- When the ECM detects an irregularity, it records the diagnostic trouble code, and outputs the signal to the Data Link connector.
- DTC codes are not deleted even if IG OFF.
Information
- Low battery voltage can degrade self-diagnosis and the malfunction cannot be detected, so check the battery voltage and other conditions before inspection.
- If a sensor or actuator connector is disconnected with the IG turned on, the diagnostic trouble code (DTC) is recorded. In this case, disconnect the battery negative terminal (-) for 15 seconds or more, and the diagnosis memory will be erased.