Manufacturer Code Charts: 2707
Navigation System DTC Troubleshooting: 2707
DTC 2707:
MIC Diag
NOTE:
- Check the vehicle battery condition first Battery Test.
- This navigation DTC sets when a problem is detected in the microphone circuit.
- Check any official Honda service website for more service information about the navigation system.
- Before you troubleshoot, make sure to follow the General Troubleshooting Information How To Troubleshoot The Navigation System.
1. Clear the hard error code.
2. 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 press the engine start/stop button to select the ON mode.
3. Go into the System Diagnostic Mode, and select the Self-Diagnosis Mode.
4. Check the System Links.
Is the Mic icon red?
YES -
Go to step 5.
NO -
Go to step 10.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Check for poor connections or loose terminals at the HandsFreeLink control unit 28P connector and the front HFL-navigation-ANC/active sound control microphone 7P connector.
Are there connections or terminals OK?
YES -
Go to step 7.
NO -
Repair poor connections or loose terminals, and recheck.
7. Connect the HDS to the DLC.
8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
9. Check for HFL DTCs with the HDS.
Is DTC B1775 or B1776 indicated?
YES -
Troubleshoot the indicated DTC(s).
NO -
Go to step 13.
10. Go into the System Diagnostic Mode, and select the Self-Diagnosis Mode.
11. Select the Mic in the System Links.
12. 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 front HFL-navigation-ANC/active sound control microphone Front HFL-Navigation-ANC/Active Sound Control Microphone Removal / Installation.
13. Measure the voltage between body ground and front HFL-navigation-ANC/active sound control microphone 7P connector terminals No. 6 and No. 7 individually.
Is there battery voltage?
YES -
Go to step 14.
NO -
If the +B wire does not have voltage, repair an open in the wire between the No. 15 (10 A) fuse in the under-hood fuse/relay box and the front HFL-navigation-ANC/active sound control microphone. If the ACC wire does not have voltage, repair an open in the wire between the No. 18 (7.5 A) fuse in the driver's under-dash fuse/relay box and the front HFL-navigation-ANC/active sound control microphone.
14. Measure the voltage between front HFL-navigation-ANC/active sound control microphone 7P connector terminal No. 1 and body ground.
Is there less than 0.2 V?
YES -
Go to step 15.
NO -
Repair open or high resistance in the wire between the front HFL-navigation-ANC/active sound control microphone and body ground (G402).
15. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
16. Disconnect the HandsFreeLink control unit 28P connector.
17. Disconnect audio-navigation unit connector H (28P).
18. Check for continuity between HandsFreeLink control unit 28P connector terminals No. 27 and No. 28 and audio-navigation unit connector H (28P) terminals No. 28 and No. 27 respectively.
Is there continuity?
YES -
Substitute a known-good HandsFreeLink control unit Service and Repair, and recheck. If the symptom/indication goes away, replace the original HandsFreeLink control unit Service and Repair. If the symptom/indication is still present, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.
NO -
There is an open in the wires between the HandsFreeLink control unit and the audio-navigation unit. Replace the affected shielded harness.