S-AWC (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. CAN Bus Diagnostics Chart.) After repairing the CAN bus line, go to Step 2.
STEP 2. Scan tool diagnostic trouble code

Check the engine diagnostic trouble code. Multiport Fuel Injection (MFI).)

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.(Refer to Active Center Differential (ACD).) Then go to Step 4.
NO Intermittent malfunction. How to Cope With Intermittent Malfunctions).
STEP 4. Check whether the DTC is reset.

Q. Is DTC No. C2203 set?

YES Return to Step 1.
NO This diagnosis is complete.