Code No.C2206 Re-execution of variant coding



caution
  • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be stored. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
  • If diagnosis code No.C2206 is stored in ASC-ECU, always diagnose the CAN bus line. If there is any fault in the CAN bus lines, an incorrect diagnosis code may be stored. In this case, the stored diagnosis code is not highly reliable.
  • Before replacing the ECU, ensure that the communication circuit is normal.
  • When diagnosis code No.C2206 is stored in ASC-ECU, the diagnosis code may also be stored in ETACS-ECU. When the diagnosis code is stored in ETACS-ECU, carry out the diagnosis of the diagnosis code for ETACS-ECU first.

OPERATION


ASC-ECU receives the vehicle information stored in the ETACS-ECU via CAN bus lines.

DIAGNOSIS CODE SET CONDITIONS


ASC-ECU communicates with ETACS-ECU via CAN bus lines. This diagnosis code is stored if the vehicle information stored in ETACS-ECU varies from the one stored when the ignition switch was last turned on.

PROBABLE CAUSES



  • ETACS-ECU or ASC-ECU which was equipped with other vehicle is used.
  • Malfunction of ETACS-ECU
  • ASC-ECU malfunction
  • External noise interference

DIAGNOSIS PROCEDURE


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


Use M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?

Go to Step 2.
Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ). On completion, go to Step 6.

STEP 2. M.U.T.-III Diagnosis code of other system


Use M.U.T.-III to check that the vehicles information-related diagnosis code is stored in the ETACS-ECU.

Q. Is the diagnosis code stored?

Troubleshoot the relevant diagnosis code, and then go to Step 3.
Go to Step 5.

STEP 3. ETACS-ECU coding data check


Refer to GROUP 00 - Precautions before Service/Coding List .

Q. Is the check result normal?

Go to Step 5.
Go to Step 4.

STEP 4. ETACS-ECU variant coding


Perform the variant coding to the ETACS-ECU.

Q. Does variant coding succeed?

Go to Step 6.
Replace the ETACS-ECU (Refer to GROUP 54A - ETACS-ECU ), and then go to Step 6.

STEP 5. Check whether the diagnosis code is stored again.


(1)Erase the diagnosis code.
(2)Ignition switch "LOCK" (OFF)
(3)Ignition switch "ON"

Q. Is diagnosis code No.C2206 stored?

Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ). Then go to Step 6.
This diagnosis is complete.

STEP 6. Check whether the diagnosis code is stored again.


(1)Erase the diagnosis code.
(2)Ignition switch "LOCK" (OFF)
(3)Ignition switch "ON"

Q. Is diagnosis code No.C2206 stored?

Return to Step 1.
This diagnosis is complete.