B1178

DTC B1178: F-CAN Communication Line Error

1. Clear the DTCs with the HDS.
2. Turn the ignition switch OFF, and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS.

Is DTCs B1168, B1169, B1170, and/or B1173 indicated?

YES - Go to the indicated DTCs troubleshooting.

NO - Intermittent failure, the system is OK at this time. Check for open or short in the wire.