Code No. C2203 VIN not recorded


caution
  • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C, Trouble code diagnosis ).
  • When other diagnosis code for ABS-ECU is set, troubleshoot that diagnosis code first.

OPERATION
ABS-ECU receives vehicle information from the engine ECU and stores it.

DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set when ABS-ECU cannot receive the vehicle information from the engine ECU.

PROBABLE CAUSES

  • Malfunction of the CAN bus
  • Engine ECU malfunction
  • ABS-ECU malfunction
  • When the ignition switch is turned to the "ON" position for the first time after the ABS-ECU is replaced.

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?
Go to Step 3.
Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnosis table ). On completion, go to Step 2.

STEP 2. Diagnosis code recheck after resetting CAN bus lines

Q. Is the diagnosis code No.C2203 set?
Go to Step 3.
This diagnosis is complete.

STEP 3. M.U.T.-III diagnosis code
Check that the engine ECU sets a diagnosis code.

Q. Is the diagnosis code set?
Troubleshoot the engine ECU diagnosis code <Refer to GROUP 13A - Troubleshooting (4A9), GROUP 13B - Troubleshooting (4B1), GROUP 13D - Troubleshooting (BWC)>. Then go to Step 5.
Go to Step 4.

STEP 4. Check whether the diagnosis code is reset.

Q. Is the diagnosis code No.C2203 set?
Replace the hydraulic unit (ABS-ECU) (Refer to ). Then go to Step 5.
If a trouble is solved, it is determined that there is an intermittent malfunction such as poor engaged connector(s) or open circuit (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).

STEP 5. Check whether the diagnosis code is reset.

Q. Is the diagnosis code No.C2203 set?
Return to Step 1.
This diagnosis is complete.