Error Code Occurs During ECU Upgrade (9000-36-7000)

Symptom:  Error code [9000-36-7000] occurs during an ECU upgrade.

Cause:  This error occurs when the target control unit does not respond to the ECU upgrade data transfer command sent by the ECU app or when the specified response time is exceeded.

Resolution: 

1. Check whether any aftermarket equipment is installed in the vehicle.
2. Verify the diagnostic tool connection and confirm that the sensor output from the target control unit is displayed normally.
3. If the connection and sensor output are normal, disconnect the vehicle power connector, wait 5 minutes, reconnect it, and then retry the ECU upgrade.