Code No.U1EE1: ECU programming error


caution
  • If diagnosis code U1EE1 is set in the A/T-ECU, always diagnose the CAN main bus line.
  • Whenever the ECU is replaced, ensure that the communication circuit is normal.

DIAGNOSIS CODE SET CONDITIONS


If the A/T-ECU software version does not match, code No.U1EE1 is set.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Using M.U.T.-III, perform CAN bus line diagnosis.

Q. Is the check result normal?
Go to Step 2.
Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ).

STEP 2. Execution of reprogramming
After executing the reprogramming, check again if the diagnosis code is set.

Q. Is code No.U1EE1 set?
Replace the A/T-ECU.
The procedure is complete.