Symptom: Error code [5021-31-7000] occurs during an ECU upgrade.
Cause: The control unit does not respond or the specified timeout is exceeded when executing the erase memory or checkdependency command during the ECU upgrade.
Corrective Action:
1. Check whether any aftermarket equipment is installed in the vehicle.
2. Verify the diagnostic tool connection and confirm that sensor output data from the target control unit is displayed correctly.
3. If the connection and sensor output data are normal, retry the ECU upgrade.
4. If the same failure occurs after retrying, contact GIT to perform a test using a file with adjusted timing.
5. If the control unit cannot be recovered after testing, contact Kia Techline.
Comments
0 comments
Please sign in to leave a comment.