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DTC 2707: MIC Diag

WARNING: This page is about a different car, the 2011 Honda Pilot, 2010 Honda Pilot, and 2009 Honda Pilot. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Check the vehicle battery condition first.
  • 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.
  • Check for any B-CAN DTCs and repair them first.
  • Before you troubleshoot, make sure to follow GENERAL TROUBLESHOOTING INFORMATION  .
  1. Clear the hard error code (see HOW TO CLEAR ERROR HISTORY  ).
  2. Turn the ignition switch to LOCK (0), then back to ON (II).
  3. Go into the Diagnostic Menu and select the Self-Diagnosis Mode in the Select Diagnosis Items menu (see SYSTEM DIAGNOSTIC MODE  ).
  4. Check 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 unit connector D (5P).

    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  - Troubleshoot the indicated DTC.

    NO  - Go to step  10.

  8. Select the Mic in the System Links.
  9. Select the navigation TALK button and 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 (see HFL-NAVIGATION-ANC MICROPHONE REMOVAL/INSTALLATION  ).

  10. Measure the voltage between body ground and HFL-navigation-ANC microphone 7P connector terminals No. 6 and No. 7 individually.
    Fig 1: Checking Voltage Between Body Ground & HFL-Navigation-ANC Microphone 7P Connector Terminals No. 6 & No. 7
    G05967167Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    YES  - '09 model: Go to step  11 '10-11 models: Go to step  12.

    NO  - Repair an open in the wire(s) between the No. 17 (20 A) fuse in the under-hood fuse/relay box, the No. 35 (10 A) fuse in the under-dash fuse/ relay box and the front HFL-navigation-ANC microphone.

  11. Measure the voltage between front HFL-navigation-ANC microphone 7P connector terminal No. 1 and body ground.
    Fig 2: Checking Continuity Between HFL-Navigation-ANC Microphone 7P Connector Terminal No. 1 & Body Ground
    G05967168Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there less than 0.2 V? 

    YES  - Replace the HFL-navigation-ANC microphone (see HFL-NAVIGATION-ANC MICROPHONE REMOVAL/INSTALLATION ).

    NO  - Repair an open or high resistance in the wire between the front HFL-navigation-ANC microphone and body ground (G701).

  12. Turn the ignition switch to LOCK (0).
  13. Check for continuity between HFL-navigation-ANC microphone 7P connector terminal No. 2 and body ground.
    Fig 3: Checking For Continuity Between HFL-Navigation-ANC Microphone 7P Connector Terminal No. 2 & Body Ground
    G00482257Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Replace the HFL-navigation-ANC microphone (see HFL-Navigation-ANC Microphone Removal/Installation ).

    NO  - Go to step 14.

  14. Check for continuity between HandsFreeLink control unit 28P connector terminal No. 14 and body ground.
    Fig 4: Checking For Continuity Between Handsfreelink Control Unit 28P Connector Terminal No. 14 & Body Ground
    G00482258Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - There is an open in the wire between the HFL-navigation-ANC microphone and the HandsFreeLink control unit. Replace the affected shielded harness.

    NO  - Go to step 15.

  15. Disconnect the HandsFreeLink control unit 28P connector.
  16. Check for continuity between HandsFreeLink control unit 28P connector terminal No. 28 and body ground.
    Fig 5: Checking For Continuity Between Handsfreelink Control Unit 28P Connector Terminal No. 28 & Body Ground
    G00482254Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Replace the HandsFreeLink control unit (see HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION ).■

    NO  - Go to step 17.

  17. Check for continuity between navigation unit connector C (16P) terminal No. 16 and body ground.
    Fig 6: Checking For Continuity Between Navigation Unit Connector C (16P) Terminal No. 16 & Body Ground
    G00482255Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - There is an open in the wire between the navigation unit and the HandsFreeLink control unit. Replace the affected shielded harness.

    NO  - Go to step 18.

  18. Check for continuity bettwen navigation unit connector A (8P) terminal No. 4 and body ground.
    Fig 7: Checking For Continuity Bettwen Navigation Unit Connector A (8P) Terminal No. 4 & Body Ground
    G00482256Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Replace the Navigation unit (see Navigation Unit Removal/Installation ).

    NO  - Repair open in the wire between navigation unit connector A (8P) terminal No. 4 and body ground.

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