C2203

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 CAN Bus Line Diagnostics Flow ).
- When other diagnostic trouble code for ASC-ECU is set, troubleshoot that diagnostic trouble code first.
- Whenever ECU is replaced, ensure that the CAN bus lines are normal.
- When the hydraulic unit (integrated with ASC-ECU) is replaced, always carry out the calibration of the steering wheel sensor, the G and yaw rate sensor and brake fluid pressure sensor (Refer to Testing and Inspection , Testing and Inspection and Testing and Inspection ).

OPERATION

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

DTC SET CONDITIONS

This diagnostic trouble code is set when ASC-ECU cannot receive the vehicle information from the engine control module.

PROBABLE CAUSES

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

DIAGNOSIS

STEP 1. Using scan tool MB991958, diagnose the CAN bus lines.

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 CAN Bus Diagnostics Chart).
On completion, go to Step 2.
STEP 2. Diagnostic trouble code recheck after resetting CAN bus lines

(1)Ignition switch "LOCK" (OFF)

(2)Ignition switch "ON"

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 that the engine control module sets a diagnostic trouble code.

Q. Is any DTC set?

YES Troubleshoot the engine control module diagnostic trouble code Multiport Fuel Injection (MFI)), and then go to Step 5.
NO Go to Step 4.
STEP 4. Check whether the diagnostic trouble code is reset.

(1)Erase the DTC.

(2)Ignition switch: "LOCK" (OFF) position

(3)Ignition switch: "ON" position

Q. Is DTC C2203 set?

YES Replace the hydraulic unit (integrated with ASC-ECU) (Refer to Service and Repair), and then go to Step 5.
NO If a trouble is solved, it is determined that there is an intermittent malfunction such as poor engaged connector(s) or open circuit How to Cope With Intermittent Malfunctions).
STEP 5. Check whether the diagnostic trouble code is reset.

(1)Erase the DTC.

(2)Ignition switch: "LOCK" (OFF) position

(3)Ignition switch: "ON" position

Q. Is DTC C2203 set?

YES Return to Step 1.
NO The procedure is complete.