On-Board Diagnostics Foreword

FOREWORD [AUDIO]

- If there is any vehicle malfunction complaint lodged by a customer, perform malfunction diagnosis according to the troubleshooting procedure.

Troubleshooting Procedure





*1
Controller Area Network (CAN) Malfunction Diagnosis Flow [Multiplex Communication System]
*2
DTC Inspection Note

Action for Non-repeatable Malfunction

- If the malfunction does not recur, verify the malfunction cause by performing the following actions:

- Based on the repair order form, attempt to drive the vehicle or perform tests to replicate the malfunction, record the data at that time, and detect the malfunction cause.
- Shake the wiring harness or connector of the electrical component which is suspected to be the cause of the malfunction, and inspect for malfunction or occurrence of any DTCs.





- Inspect the female terminals on the connector of the electric component which is suspected to be the cause of the malfunction for poor connection.






DTC Inspection Note

- There are two methods of DTC inspection for the audio system: The on-board diagnostic test mode by operating the audio unit to activate the on-board diagnostic function, and using the M-MDS. DTC Inspection - Audio

CAUTION:
- Because there are DTCs which are not available in the on-board diagnostic test mode, the displayed DTC may differ depending on whether the on-board diagnostic test mode or the M-MDS is used. If there is a malfunction in the audio system even though a DTC is not displayed in the on-board diagnostic test mode, perform the DTC inspection using the M-MDS. Audio - DTC Table