U1120: Can Communications System TCL Uncontrollable By Engine Malfunction: Notes
CAUTION:
- If DTC U1120 is set in the ABS/TCL-ECU < FWD > or TCL/ASC-ECU < AWD >, 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 < FWD > or TCL/ASC-ECU < AWD > 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.