Code No.U1109 ETACS CAN Timeout


caution
  • If diagnosis code No. U1109 is set in the CAN converter-ECU, diagnose the CAN bus lines.
  • Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

TROUBLE JUDGMENT



COMMENTS ON TROUBLE SYMPTOM



PROBABLE CAUSES



  • Malfunction of ETACS-ECU
  • Malfunction of the CAN converter-ECU
  • Malfunction of wiring harness or connector

DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III CAN bus diagnostics



Q. Is the check result satisfactory?





STEP 2. M.U.T.-III other system diagnosis code



Q. Is the diagnosis code set?





STEP 3. M.U.T.-III other system diagnosis code




  • Combination meter

      • Code No.U1109: ETACS-ECU timeout
  • Multi-centre display

      • Code No.U1109: ETACS-ECU timeout

Q. Is the diagnosis code set?





STEP 4. Check whether the diagnosis code is reset.



(1)Erase the diagnosis code.
(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(3)Check if the diagnosis code is set.

Q. Is the diagnosis code set?





STEP 5. Check whether the diagnosis code is reset.



(1)Erase the diagnosis code.
(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(3)Check if the diagnosis code is set.

Q. Is the diagnosis code set?