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 .■