DTC B1792: HandsFreeLink control module error (without navigation)

NOTE:

Check the vehicle battery condition first (see 12 VOLT BATTERY TEST ).
If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN system diagnosis test mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Connect the HDS to the DLC (see HOW TO CHECK FOR DTCS WITH THE HDS (WITHOUT NAVIGATION) ).
Clear the DTCs with the HDS.
Turn the ignition switch to LOCK (0), and then back to ON (II).
Check for DTCs with the HDS.
Is DTC B1792 indicated?

YES -Replace the HandsFreeLink control unit (see CONTROL UNIT INPUT TEST/REPLACEMENT ).

NO -Intermittent failure, the system is OK at this time.