B1178

DTC Troubleshooting: B1178

DTC B1178:

F-CAN Communication Circuit Error

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0) and then back to ON (II).

3. Check for DTCs with the HDS.

Are DTCs B1168, B1169, B1170, B1173, B1178, B1185 and B1187 indicated?

YES -

Go to the indicated DTCs troubleshooting.

NO -

Intermittent failure, the F-CAN communication line is OK at this time. Check for worn or shorted wires.