C2200

DTC C2200: Abnormality in ASC-ECU

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 ).
- 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 controls ASC by calculating the data sent from the wheel speed sensor, the steering wheel sensor, and the G and yaw rate sensor.

DTC SET CONDITIONS

This diagnostic trouble code is set when ASC-ECU has malfunction.

PROBABLE CAUSES

ASC-ECU malfunction

DIAGNOSIS

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

Use scan tool MB991958 to 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.) On completion, go to Step 3.
STEP 2. Diagnostic trouble code recheck after resetting CAN bus lines

Erase the DTC.

Q. Is DTC C2200 set?

YES Replace the hydraulic unit (integrated with ASC-ECU) (Refer to Service and Repair). Then go to Step 3.
NO Intermittent malfunction How to Cope With Intermittent Malfunctions).
STEP 3. Diagnostic trouble code recheck after resetting CAN bus lines

Erase the DTC.

Q. Is DTC C2200 set?

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