Code No.U1206 Communication standby command the flag malfunction


caution If diagnosis code U1206 is set in the combination meter, diagnose the CAN main bus line.

TROUBLE JUDGMENT



COMMENTS ON TROUBLE SYMPTOM


Current trouble
  • The door switch system of the ETACS-ECU, the ETACS-ECU, or the combination meter may be defective.
Past trouble
  • Carry out diagnosis with particular emphasis on connector(s) or wiring harness between the ETACS-ECU and the door switch, and the power supply system to the ETACS-ECU. For diagnosis procedures, refer to "How to cope with past trouble" (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points ).

PROBABLE CAUSES



  • Damaged harness wires and connectors
  • Malfunction of ETACS-ECU
  • Malfunction of combination meter

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.



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 to "ON" position.
(3)On completion, check that the diagnosis code is not reset.

Q. Is the diagnosis code set?