DTC U1120: Can Communications System TCL Uncontrollable By Engine Malfunction: Notes
CAUTION:
- If DTC U1120 is set in the ABS/TCL-ECU, always diagnose the CAN main bus line. If there is any fault in the CAN bus lines, an incorrect DTC may be set.
- Whenever the ABS/TCL-ECU is replaced, ensure that the communication circuit is normal.
- The engine control system-related DTC may be set when DTC U1120 is set. (For details refer to, INTERSYSTEM AFFILIATED DTC REFERENCE TABLE ). Diagnose the engine control system first when the engine control system-related DTC is set.