DTC Troubleshooting: 2707
DTC 2707:
 MIC Diag
  1. Turn the ignition switch to LOCK (0), and then back to ON (II).
  1. Select the System Links.
Is the Mic icon red?
YES -
Go to Step 5 .
NO -
Go to Step 8 .
  1. Turn the ignition switch to LOCK (0).
  1. Check for poor connections or loose terminals at Hands Free Telephone control unit 28P connector, HFT/navigation microphone 7P connector, and navigation control unit D (5P) connector.
Are the connections OK?
YES -
Go to Step 6 .
NO -
Repair poor connections or loose terminals.■
  1. Check for DTCs with the HDS.
Is DTC B1775 or B1776 indicated?
YES -
Troubleshooting the indicated DTC.■
NO -
Go to Step 10 .
  1. Select the Mic in the System Links.
  1. Select the Talk Switch icon in steering Switch, then check the Mic Level.
Is the microphone level OK?
YES -
Intermittent failure, the system is OK at this time.■
NO -
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect the HFT/navigation microphone 7P connector.
  1. Turn the ignition switch to ON (II).
  1. Measure the voltage between the body ground and HFT/navigation microphone 7P connector terminals No. 6 and No. 7 individually.
Are there battery voltage?
YES -
Go to Step 14 .
NO -
Repair open in the wire(s).■
  1. Turn the ignition switch to LOCK (0).
  1. Check for continuity between the HFT/navigation microphone 7P connector terminal No. 1 and body ground.
Is there continuity?
YES -
NO -
Repair open in the ground wire to G501.■