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DTC C2206 Re-execution of Variant Coding
 
 
caution
  • If there is any problem in the CAN bus lines, an incorrect DTC may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
  • If DTC C2206 is set in ASC-ECU, always diagnose the CAN bus line. If there is any fault in the CAN bus lines, an incorrect DTC may be set. In this case, the set DTC is not highly reliable.
  • Before replacing the ECU, ensure that the communication circuit is normal.
  • When DTC C2206 is set in ASC-ECU, the DTC may also be set in ETACS-ECU. When the DTC is set in ETACS-ECU, carry out the diagnosis of the DTC for ETACS-ECU first.
 
 
OPERATION
ASC-ECU receives the vehicle information set in the ETACS-ECU via CAN bus lines.
 
 
 
DTC SET CONDITIONS
ASC-ECU communicates with ETACS-ECU via CAN bus lines. This DTC is set 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
STEP 1. Using scan tool (M.U.T.-IIISE), diagnose the CAN bus line.
Use scan tool (M.U.T.-IIISE) to diagnose the CAN bus lines.
Is the check result normal?
Go to Step 2.
Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
 
STEP 2. Using scan tool (M.U.T.-IIISE), check DTC of other system.
Use scan tool (M.U.T.-IIISE) to check that the vehicles information-related DTC is set in the ETACS-ECU (Refer to GROUP 54A - ETACS-ECU/Diagnostic trouble code chart ).
Is the DTC set?
Troubleshoot the relevant DTC.
Perform the variant coding to the ETACS-ECU and then go to Step 3.
 
STEP 3. Check whether the DTC is set again.
(1) Ignition switch "LOCK" (OFF)
(2) Ignition switch "ON"
Is DTC C2206 set?
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ).
This diagnosis is complete.