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 How to Troubleshoot the Navigation System.

1. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, then back to ON (II), or the ON mode.

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

3. Select the System Links.

Is the Mic icon red?

YES -

Go to step 4.

NO -

Go to step 9.

4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

5. Check for poor connections or loose terminals at these items:

- Audio-navigation unit connector H (28P)
- HandsFreeLink control unit 28P connector
- HFL-navigation microphone 7P connector

Are the connections OK?

YES -

Go to step 6.

NO -

Repair poor connections or loose terminals.�

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

7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

8. Check for DTCs with the HDS.

Is DTC B1775 or B1776 indicated?

YES -

Troubleshoot the indicated DTC.�

NO -

Go to step 11.

9. Select the Mic in the System Links.

10. Press the TALK button on the steering wheel 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 microphone HFL-Navigation Microphone Removal/Installation (With Navigation).�

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





Is there battery voltage?

YES -

Go to step 12.

NO -

Repair an open in the wire(s).�

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





Is there less than 0.2 V?

YES -

Go to step 13.

NO -

Repair an open or high resistance in the wire between audio-navigation unit and body ground (G401).�

13. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

14. Disconnect the HFL-navigation microphone 7P connector.

15. Check for continuity between the terminals of the HandsFreeLink control unit 28P connector according to the table.









Is there continuity between any of the terminals?

YES -

There is a short in the wires between the HandsFreeLink control unit and the audio-navigation unit. Replace the affected shielded harness.�

NO -

Replace the HFL-navigation microphone HFL-Navigation Microphone Removal/Installation (With Navigation).�