S-AWC

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. Diagnostic Trouble Code Descriptions
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.