Super All Wheel Control

DTC C2203: VIN not Recorded

CAUTION:
^ If there is any problem in the CAN bus lines, an incorrect diagnostic trouble code may be set. Prior to this diagnosis, diagnose the CAN bus lines.
^ Whenever the ECU is replaced, ensure that the CAN bus lines are normal.

OPERATION
AWC-ECU receives chassis number information from the engine control module. (AWC-ECU receives chassis number information from the engine control module via CAN, and writes to AWC-ECU.))

DTC SET CONDITIONS
When the chassis number is not written.

PROBABLE CAUSES
^ The CAN bus line is defective.
^ Malfunction of engine control module
^ VIN not written
^ Malfunction of AWC-ECU

DIAGNOSTIC PROCEDURE

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

Q: Is the check result normal?
YES: Go to Step 2.
NO: Repair the CAN bus lines. After repairing the CAN bus line, go to Step 2.

STEP 2. Scan tool diagnostic trouble code
Check the engine diagnostic trouble code.

Q: Is the DTC set?
YES: Perform the relevant troubleshooting.
NO: Go to Step 3.

STEP 3. Check whether the DTC is reset.

Q: Is DTC No. C2203 set?
YES: Replace the AWC-ECU. Then go to Step 4.
NO: Intermittent malfunction..

STEP 4. Check whether the DTC is reset.

Q: Is DTC No. C2203 set?
YES: Return to Step 1.
NO: This diagnosis is complete.