DTC Troubleshooting: B1750

DTC B1750: Communication Bus Line Error (BUS-OFF) NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

1. Clear the DTCs with the HDS.

1. Turn the ignition switch OFF, and then back ON (II).

1. Wait for 6 seconds.

1. Check for DTCs with the HDS.

Is DTC B1600 indicated?

YES | - | Go to Step 5 .
NO | - | Intermittent failure, the system is OK at this time. Check for loose or poor connections at hands free telephone control unit connector (22P) and at driver's under-dash fuse/relay box connector X (39P).■

1. Check for DTCs with the HDS.

Is DTC B1000 also indicated?

YES | - | Troubleshoot DTC B1000.■
NO | - | If only B1750 is indicated, replace the hands free telephone control unit .■