Navigation System 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, microphone 3P 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 microphone 3P connector.
  1. Turn the ignition switch to ON (II).
  1. Check for continuity between Hands Free Telephone control unit 28P connector terminals No. 13, No. 12, and terminals No. 14 to No. 12.
Is there continuity?
YES -
There is a short in the harness. Replace the affected shielded harness.■
NO -