DTC 2707

DTC 2707: MIC Diag

NOTE: Before you troubleshoot, make sure to follow the general troubleshooting information.

1. Clear the hard error code.
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.
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 6.

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. 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 - Replace the HFL/navigation/ANC microphone.

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.






Are there battery voltage?

YES - Go to step 14.

NO - Repair open in the wire(s).

14. Turn the ignition switch to LOCK (0).
15. Check for continuity between the HFL/navigation/ANC microphone 7P connector terminal No. 1 and body ground.






Is there continuity?

YES - Replace the HFL/navigation/ANC microphone.

NO - Repair open in the ground wire to G501.