Manufacturer Code Charts: 2707

Navigation System DTC Troubleshooting: 2707

DTC 2707:

MIC Diag

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- This navigation DTC sets when a problem is detected in the microphone circuit.
- Before you troubleshoot, make sure to follow the General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes.

1. Clear the hard error code.

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 11.

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

6. Check for poor connections or loose terminals at HandsFreeLink control unit 28P connector, front HFL-navigation-ANC microphone 7P connector, and navigation unit connector D (5P).

Are the connections OK?

YES -

Go to step 7.

NO -

Repair poor connections or loose terminals.�

7. Connect the HDS to the DLC Initial Inspection and Diagnostic Overview.

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 -

Go to step 13.

11. Select the Mic in the System Links.

12. Check the Mic level by pressing the navigation TALK button on the steering wheel, then say "Testing" in front of the microphone.

Is the microphone level OK?

YES -

Intermittent failure, the system is OK at this time.�

NO -

Replace the front HFL-navigation-ANC microphone Front HFL-Navigation-ANC Microphone Removal/Installation.�

13. Measure the voltage between the body ground and front HFL-navigation-ANC microphone 7P connector terminals No. 6 and No. 7 individually.





Is there battery voltage?

YES -

Go to step 14.

NO -

Repair an open in the wire(s).�

14. Measure the voltage between the front HFL-navigation-ANC microphone 7P connector terminal No. 1 and body ground.





Is there less than 0.2 V?

YES -

Replace the front HFL-navigation-ANC microphone Front HFL-Navigation-ANC Microphone Removal/Installation.�

NO -

Repair an open or high resistance in the wire between the front HFL-navigation-ANC microphone 7P connector and body ground (G501).�