DTC Troubleshooting: B1775
  1. Check for continuity between Hands Free Telephone control unit 22P connector terminal No. 9 and microphone 3P connector terminal No. 1.
Is there continuity?
YES -
Go to Step 11 .
NO -
Repair open in the wire between the Hands Free Telephone control unit and the roof console.■
  1. Disconnect the 14P connector from the navigation unit.
  1. Turn the ignition switch ON (II).