DTC B1178: F-CAN Communication Line Error
- Clear the DTCs with the HDS.
- Turn the ignition switch OFF, and then back ON (II).
- Wait for 6 seconds or more.
- 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.