DTC Troubleshooting: B1792
DTC B1792:
 Hands Free Telephone Control Unit Internal Error
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch OFF, and then back ON (II).
  1. Check for DTCs with the HDS.
Is DTC B1792 indicated?
YES -
Replace the Hands Free Telephone control unit .■
NO -
Intermittent failure, the system is OK at this time.■