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DTC C2206: Re-execution of variant coding


caution
  • If diagnostic trouble code No. C2206 is set in ASC-ECU, always diagnose the CAN bus lines. If there is any fault in the CAN bus lines, an incorrect DTC may be set.
  • Whenever the ECU is replaced, ensure that the communication circuit is normal.
  • When diagnostic trouble code No. C2206 is set in ASC-ECU, the diagnostic trouble code may also be set in ETACS-ECU. When the diagnostic trouble code is set in ETACS-ECU, perform the diagnosis of the diagnostic trouble code for ETACS-ECU first.
  • When the hydraulic unit (integrated with ASC-ECU) is replaced, always perform the calibration of steering wheel sensor, G and yaw rate sensor, brake fluid pressure sensor, cut valve, and inlet valve.(Refer to , , , and .)

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

DTC SET CONDITIONS
ASC-ECU communicates with ETACS-ECU via CAN bus lines. This diagnostic trouble code is set if the vehicle information stored in ETACS-ECU has been altered from the one that was stored at the previous ignition switch 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
Required Special Tools:
  • MB991958 Scan Tool (M.U.T.-III Sub Assembly)

    • MB991824: Vehicle Communication Interface (V.C.I.)
    • MB991827 M.U.T.-III USB Cable
    • MB991910 M.U.T.-III Main Harness A

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines.
Using scan tool MB991958, diagnose the CAN bus lines.

Q. Is the check result normal?
Go to Step 2.
Repair the CAN bus lines. (Refer to GROUP 54C - Troubleshooting .) After repairing the CAN bus line, go to Step 7.

STEP 2. Scan tool diagnostic trouble code
Check that the diagnostic trouble code U1415 or U1417 is set in ASC-ECU.

Q. Is any DTC set?
Perform troubleshooting for the diagnostic trouble code that is set. (Refer to .)
Go to Step 3.

STEP 3. Scan tool diagnostic trouble code for other systems
Use scan tool to check that the vehicles information-related DTC is set by the ETACS-ECU.

Q. Is any DTC set?
Troubleshoot the relevant diagnostic trouble code, and then go to Step 4.
Go to Step 4.

STEP 4. ETACS-ECU coding data check
Check the following coding data stored in ETACS-ECU. (Refer to GROUP 00 - Coding Table .)
Vehicle line
    OK: LANCER EVO
Transmission
    OK (Vehicles without TC-SST): 5MT
    OK (Vehicles with TC-SST): TC-SST
Engine type
    OK: D4 V.V.T. 2.0L TC
Engine power
    OK: Normal
Chassis Type for A.S.C.
    OK: Type 1
Final drive
    OK: AWD FF Base
Transfer
    OK: ACD
SAS
    OK: Present
AWD
    OK: Not present
TCM
    OK (Vehicles without TC-SST): Not present
    OK (Vehicles with TC-SST): Present
ACDAYC
    OK: Present

Q. Is the check result normal?
Go to Step 6.
Go to Step 5.

STEP 5. ETACS-ECU variant coding
Perform the variant coding to the ETACS-ECU.

Q. Dose variant coding succeed?
Go to Step 7.
Replace the ETACS-ECU (Refer to GROUP 54A - ETACS-ECU ), and then go to Step 7.

STEP 6. Check whether the DTC is reset.
(1)Ignition switch: "LOCK" (OFF) position.
(2)Ignition switch: "ON" position.

Q. Is DTC C2206 set?
Replace the hydraulic unit (incorporates in ASC-ECU).(Refer to .) Then go to Step 7.
The procedure is complete.

STEP 7. Check whether the DTC is reset.
(1)Ignition switch: "LOCK" (OFF) position.
(2)Ignition switch: "ON" position.

Q. Is DTC C2206 set?
Return to Step 1.
The procedure is complete.