Code No.U1102 ASC/TCL/ABS timeout/Not equipped


caution
  • If diagnosis code No.U1102 is set in the ETACS, diagnose the CAN main bus line.
  • Whenever the ECU is replaced, ensure that the communication circuit is normal.

TROUBLE JUDGEMENT



PROBABLE CAUSES



  • Malfunction of the ASC-ECU
  • Malfunction of the ETACS-ECU
  • Malfunction of the CAN bus

DIAGNOSIS PROCEDURE


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



Q. Is the check result normal?





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



Q. Is the diagnosis code set?





STEP 3. Check whether the diagnosis code is reset.



(1)Erase the diagnosis code.
(2)Turn the electric motor switch from "LOCK" (OFF) position to "ON" position.
(3)On completion, check that the diagnosis code is reset.

Q. Is the diagnosis code set?





STEP 4. Check whether the diagnosis code is reset.



(1)Erase the diagnosis code.
(2)Turn the electric motor switch from "LOCK" (OFF) position to "ON" position.
(3)On completion, check that the diagnosis code is reset.

Q. Is the diagnosis code set?





STEP 5. Check whether the diagnosis code is reset.



(1)Erase the diagnosis code.
(2)Turn the electric motor switch from "LOCK" (OFF) position to "ON" position.
(3)On completion, check that the diagnosis code is reset.

Q. Is the diagnosis code set?