Final DTC Checking

Information 

After repairing the problem using the DTC guide, it is essential to verify if the troubles have been corrected.

1. After connecting the GDS, perform self-diagnosis to check the "Fault code (DTC)".
2. Clear the stored fault code by using the diagnostic device.
3. The vehicle is driven according to the DTC detection condition of the failure determination condition.
4. Using GDS, see if the DTC returns.
5. Does the DTC recur?

   OK 

   System is now working properly.

   Release the vehicle.

   NG 

   Case 1) some of the procedures is missing on the flow chart,

   • Go on to the missing procedure.

   Case 2) If the same DTC returns, even though mechanic has completed the whole procedure in the flow chart,

   • It is possible to suspect a failure of the controller unit. Refer to the following to proceed with the controller pass/fail decision.

Information 

Controller Quality Judgement Procedure

1. Replace with a good AWD ECU by referring to the appropriate service information.
2. If the fault code is cleared after installing the good AWD ECU: It is determined that the controller is defective and the vehicle is shipped with the good AWD ECU installed.
3. If the fault code is not cleared after installing the non-defective AWD ECU: The existing controller cannot be determined as the cause of the fault. In this case, re-install the existing AWD ECU and recheck the entire inspection flow.

   * In case of exchanging AWD ECU, perform the procedure of "Backup and input learning value when replacing AWD ECU" in the "SW Management".