• When the customer reports a vehicle malfunction, check the malfunction indicator lamp (MIL) indication and diagnostic trouble code (DTC), then diagnose the malfunction according to following flowchart.
― If the DTC exists, diagnose the applicable DTC inspection. (See DTC TABLE [MZI-3.7].)
― If the DTC does not exist and the MIL does not illuminate, diagnose the applicable symptom troubleshooting.