C2203
DTC C2203: VIN not recordedCAUTION
^ 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.
^ When other diagnostic trouble code for ABS-ECU is set, troubleshoot that diagnostic trouble code first.
CIRCUIT OPERATION
ABS-ECU receives vehicle information number from the engine ECU and stores it.
DTC SET CONDITIONS
This diagnostic trouble code is set when ABS-ECU cannot receive the vehicle information number from the engine-ECU.
PROBABLE CAUSES
^ Malfunction of the CAN bus
^ Engine-ECU malfunction
^ ABS-ECU malfunction
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. M.U.T.-III CAN bus diagnostics
Use scan tool to diagnose the CAN bus lines.
Q: Is the check result normal?
YES: Go to Step 3.
NO: Repair the CAN bus lines. On completion, go to Step 2.
STEP 2. Diagnostic trouble code recheck after resetting CAN bus lines
Q: Is DTC C2203 set?
YES: Go to Step 3.
NO: The procedure is complete.
STEP 3. M.U.T.-III diagnostic trouble code
Check for engine-ECU diagnostic trouble code.
Q: Is any DTC set?
YES: Troubleshoot the engine ECU diagnostic trouble code.
NO: Go to Step 4.
STEP 4. Check whether the diagnostic trouble code is reset.
Q: Is DTC C2203 set?
YES: Replace the ABS-ECU.
NO: The procedure is complete.