DTC C2256: Stoplight Switch Signal Failure: Notes
CAUTION:
- If there is any problem in the CAN bus lines, an incorrect DTC may be set. Prior to this diagnosis, diagnose the CAN bus lines.
- Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
- When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not registered, the engine cannot be started. Refer to ON-VEHICLE SERVICE .)
- When the ACC/FCM-ECU is replaced, calibrate the radar (refer to RADAR CALIBRATION ).