Manufacturer Code Charts: 2707
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.
1. Clear the hard error code How to Troubleshoot the Navigation System.
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.
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, 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 -
Troubleshooting the indicated DTC.�
NO -
Go to step 13.
11. Select the Mic in the System Links.
12. Press the navigation Talk switch 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 front HFL-navigation-ANC microphone Front HFL-Navigation-ANC Microphone Removal/Installation (With Navigation).�
13. Turn the ignition switch to LOCK (0).
14. Disconnect the front HFL-navigation-ANC microphone 7P connector.
15. Turn the ignition switch to ON (II).
16. 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 17.
NO -
Repair an open in the wire(s).�
17. Turn the ignition switch to LOCK (0).
18. Reconnect the front HFL-navigation-ANC microphone 7P connector.
19. Turn the ignition switch to ON (II).
20. Measure the voltage between the 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 (With Navigation).�
NO -
Repair an open or high resistance in the wire between front HFL-navigation-ANC microphone 7P connector and body ground (G501).�