Hands Free Telephone System Symptom Troubleshooting - The HFT messages cannot be heard or are weak
  1. Check for continuity between Hands Free Telephone control unit 28P connector terminal No. 2 and HFT-voice control switch 5P connector terminal No. 3.
Is there continuity?
YES -
Do the HFT-voice control switch Test. ■
NO -
Repair open in the wire between Hands Free Telephone control unit and HFT-voice control switch.■