How to Troubleshoot the Hands Free Telephone System

The hands free telephone (HFT) works only with Bluetooth enabled cell phones with the Hands Free Profile. If you are not sure if your cell phone is compatible with the HFT.
The HFT gives the user the convenience of hands-free operation. It can't control the phone's performance (call quality and signal strength). To avoid performance problems, don't put the phone in a metal briefcase or in a purse under the seat.
This guide shows you just a few of the HFT's many features. You will see how to pair your phone to the HFT and then make and receive calls, all using simple voice commands. If you want a complete description of this system, please refer to the owner's manual and quick start guide.
Voice Control Tips
To give any voice command, press and release the Talk button. Always wait for the beep, then give your command in a clear, natural voice. The HFT microphone is on the ceiling, by the front spotlights.
If the HFT doesn't recognize your voice command, you'll hear ‘‘Pardon.'' If after repeating your command, it still doesn't recognize it, you'll hear ‘‘Please repeat.'' If after repeating your command again, it still doesn't recognize it, the HFT sends you to the Help menu.
To hear a list of available options at any time, say ‘‘Hands free help.''
You can give many voice commands together. For example, you can say ‘‘Dial 123-456-7890.''
To give a string of numbers in a call or dial voice command, you can say them all at once, or separate them into blocks of 3, 4, 7, 10, or 11.
To skip a voice prompt, press and release the Talk button while the HFT is speaking. The HFT begins listening for your next voice command.
To go back a step in a voice command sequence, press and release the Back button, or say ‘‘Go back.''
If you don't say anything while the HFT is listening for your voice command, it will time out and stop its voice recognition. The next time you press and release the Talk button, the HFT begins listening from the point where it timed out.
To stop a voice command sequence at any time, press and hold the Back button, or press and release the Talk button, wait for the beep, and say ‘‘Cancel.'' The next time you press and release the Talk button, the HFT begins from its main menu. You'll see MAIN on the multi-information display (MID) in the instrument panel.
When you're done with a voice command sequence, the HFT goes back to its main menu. The next time you press and release the Talk button, you'll be at the main menu and you'll see MAIN on the MID.
Remember to press and hold the Back button until you exit the main menu, otherwise, the audio system stays muted.
Self-diagnostic Function
NOTE: This procedure should be used only if HDS is unavailable.
To run the self-diagnostic function, do the following:
  1. Turn the ignition switch ACC (I).
  1. Press and hold the HFT BACK button for more than 5 seconds.
  1. When the hands free telephone system enters the self-diagnostic function, the word ‘‘DIAGNOSTIC MODE'' is displayed on the multi-information display (MID) on the gauge control module.
    • If the system has not completed testing for DTCs, the hands free telephone control unit audibly outputs ‘‘The hands free system test is in progress''.
    • If there is no DTC, the hands free telephone control unit audibly outputs ‘‘The hands free system is OK''.
    • If there is any DTC, the hands free telephone control unit audibly outputs ‘‘The hands free system needs to be serviced''.
  • The self-diagnostic function can only be initiated while the HFT is in its idle state.
  • The self-diagnostic function is considered to start once the 5 seconds press and hold is detected, and ends when the units returns to idle state.
Exiting the Self-diagnostic Mode
Press the HFT BACK button and exit the self-diagnostic mode.

Symptom Troubleshooting

Problem area
Nothing happens
Switch failure, harness failure (HFT-voice control switch, Switch ground, HFT power (ACC, +B, ground)) or Combinations of harness failure (HFT mute, HFT Audio, B-CAN), Audio unit failure, Gauge control module failure
Use the HDS to check for DTCs
MID changes, but radio continues to play
Harness failure (HFT mute), Audio unit failure
MID changes and radio mute, but no audio prompt
Harness failure (HFT Audio+, HFT Audio−), Audio unit failure
Audio prompt plays, but no MID change
Harness failure (B-CAN), Gauge control module failure
All system responses occur but the prompt is ‘‘The system is no good''
Harness failure (MIC In+, MIC In−, MIC Out+, MIC Out−), a DTC remains set from history

Pairing Your Cell Phone (A One Time Procedure)
You must pair a Bluetooth compatible phone to the HFT before you can make and receive calls. The following steps show you what you need to do. You can also refer to the phone's operating manual or call the phone retailer. Make sure the vehicle is stationary when you pair the phone;
  • You cannot pair a phone if the vehicle is moving.
  • Your phone must be in its Discovery mode.
  • Up to six Bluetooth compatible phones can be paired by the HFT.
  1. Turn on your phone, and follow the prompts to activate Bluetooth.
  1. Give these voice commands to the HFL by pressing the talk button.
    You say
    You'll hear
    ‘‘Phone setup''
    ‘‘Phone setup options are status, pair, edit, delete, and list.''
    ‘‘The pairing process requires operation of your mobile phone. For safety, only perform this function while the vehicle is stopped. State a four-digit code for pairing. Note this code, it will be requested by the phone.''
    ‘‘1. 2. 3. 4.'' (This can be any four-digit code you want.)
    ‘‘1. 2. 3. 4. is this correct?''
    ‘‘Searching for a Bluetooth phone. Make sure the phone you are trying to pair is in Discovery mode!''

  1. Follow the cell phone manufucturer's instructions to put the phone in its Discovery mode. The phone will search for the HFT. When you see HANDS FREE TELEPHONE in the device list on the phone, select it.
  1. When prompted, enter the four-digit PIN from step 2 into the phone. You will hear the HFT say ‘‘A new phone has been found. Would you like to name this phone?''
  1. Press and release the Talk button, and say what the phone name will be. For example, say ‘‘John's phone''. You'll hear ‘‘John's phone has been successfully paired''. Returning to the main menu.
  1. To pair another phone, repeat step 1 thru 5.