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. How to Troubleshoot the Navigation System (With Navigation)

1. Clear the hard error code. How to Troubleshoot the Navigation System (With Navigation)

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

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

4. Select the System Links.

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

NO - Go to step 8.


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

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

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

NO - Repair poor connections or loose terminals.


7. Check for DTCs with the HDS.

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

NO - Go to step 10.


8. Select the Mic in the System Links.

9. Press the navigation Talk switch on the steering wheel switch, then check the Mic Level. Navigation System Diagnostic Mode (With Navigation)

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

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


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

11. Disconnect the HFL-navigation-ANC microphone 7P connector.

12. Turn the ignition switch to ON (II).

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

Is there battery voltage?
YES - Go to step 14.

NO - Repair open in the wire(s).






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

15. Reconnect the HFL-navigation-ANC microphone 7P connector.

16. Turn the ignition switch to ON (II).

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

Is there 0.2 V or less?
YES - Replace the HFL-navigation-ANC microphone. Service and Repair

NO - Repair open or high resistance in the wire between HFL-navigation-ANC microphone 7P connector and body ground (G501).