Manufacturer Code Charts: 2707

Navigation System DTC Troubleshooting: 2707

DTC 2707: MIC Diag

NOTE: Before you troubleshoot, make sure to follow the General Troubleshooting Information. Reading and Clearing Diagnostic Trouble Codes

1. Clear the hard error code. Reading and Clearing Diagnostic Trouble Codes

2. Turn the ignition switch to LOCK (0), and then back to ON (II).

3. Go into the System Diagnostic Mode, and select the Self-Diagnosis Mode in the Select Diagnosis items menu. Navigation System Diagnostic Mode

4. Check the System Links.

Is the Mic icon red?
YES - Go to step 5.

NO - Go to step 12.


5. Turn the ignition switch to LOCK (0).

6. Check for poor connections or loose terminals at the HandsFreeLink control unit 28P connector, the HFL-navigation microphone 3P connector, and audio-navigation unit connector B (24P).

Are the connections OK?
YES - Go to step 7.

NO - Repair the poor connections or loose terminals.


7. Connect the HDS to the DLC. Reading and Clearing Diagnostic Trouble Codes

8. Clear the DTCs with the HDS.

9. Turn the ignition switch to LOCK (0), and then back to ON (II).

10. Check for DTCs with the HDS.

Is DTC B1775 or B1776 indicated?
YES - Troubleshoot the indicated DTC.

NO - Replace the HFL-navigation microphone. Service and Repair


11. Select the Mic in the System Links.

12. Press the navigation TALK button on the steering wheel switch, then check the Mic Level. Navigation System Diagnostic Mode

Is the microphone level OK?
YES - Intermittent failure, the system is OK at this time.

NO - Replace the HFL-navigation microphone. Service and Repair