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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 (Refer to GROUP 54C - CAN Bus Line Diagnostic 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 , and ).
 
 
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.
Is the check result normal?
Go to Step 2.
Repair the CAN bus lines. (Refer to GROUP 54C - CAN Bus Diagnostics Table .) On completion, go to Step 3.
 
STEP 2. Diagnostic trouble code recheck after resetting CAN bus lines
Erase the DTC.
Is DTC C2200 set?
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ). Then go to Step 3.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/How to Cope with Intermittent Malfunctions ).
 
STEP 3. Diagnostic trouble code recheck after resetting CAN bus lines
Erase the DTC.
Is DTC C2200 set?
Return to Step 1.
This diagnosis is complete.