Code No. C2203 Chassis No. 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 ASC-ECU is set, troubleshoot that diagnosis code first.

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

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

PROBABLE CAUSES

  • Malfunction of the CAN bus
  • Engine ECU malfunction
  • ASC-ECU malfunction

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnosis
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 - Troubleshooting ). 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 ).
Go to Step 4.

STEP 4. Check whether the diagnosis code is reset.

Q. Is the diagnosis code No. C2203 set?
Replace the ASC-ECU.
This diagnosis is complete.