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DTC 2705: HFL Diag

WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Check the vehicle battery condition first (see 12 VOLT BATTERY TEST ).
  • This navigation DTC sets when a problem is detected in the connecting lines (open/short) or in the HandsFreeLink control unit.
  • Before you troubleshoot, make sure to follow the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION  ).
  1. Clear the hard error code (see HOW TO CLEAR ERROR HISTORY ).
  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 (see SYSTEM DIAGNOSTIC MODE  ).
  4. Select the System Links.

    Is the HFL icon red? 

    YES  -Go to step 5.

    NO  -Intermittent failure, the system is OK at this time.

  5. Turn the ignition switch to LOCK (0).
  6. Connect the HDS to the DLC (see GENERAL TROUBLESHOOTING INFORMATION ).
  7. Turn the ignition switch to LOCK (0).
  8. Check for DTCs with the HDS.

    Are there any HFL DTCs indicated? 

    YES  -Do the HFL DTC troubleshooting.

    NO  -Go to step 9.

  9. Turn the ignition switch to LOCK (0).
  10. Remove the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION  ), and disconnect audio-navigation unit connector B (24P).
  11. Disconnect the HandsFreeLink control unit 28P connector.
  12. Connect HandsFreeLink control unit 28P connector terminals No. 6 and No. 7 with a jumper wire, then connect terminals No. 20 and No. 21 with a jumper wire.
    Fig 1: Connecting HandsFreeLink Control Unit 28P Connector Terminals No. 6 And No. 7 With Jumper Wire
    G06431979Courtesy of AMERICAN HONDA MOTOR CO., INC.
  13. Check for continuity between audio-navigation unit connector B (24P) terminals No. 11 and No. 23, and between terminals No. 12 and No. 24.
    Fig 2: Checking Continuity Between Audio-Navigation Unit Connector B (24P) Terminals No. 11 And No. 23
    G06431980Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Go to step 14.

    NO  -There is an open in the wire(s) between the audio-navigation unit and the HandsFreeLink control unit. Replace the affected shielded harness.

  14. Disconnect the jumper wire.
  15. Check for continuity between the terminals of audio-navigation unit connector B (24P) according to the table.
    CONTINUITY CHART

    From terminal To terminals
    B10 (GRY) B11 (LT BLU), B12 (LT GRN), B23 (ORN), B24 (PNK)
    B11 (LT BLU) B12 (LT GRN), B23 (ORN), B24 (PNK)
    B12 (LT GRN) B23 (ORN), B24 (PNK)
    B23 (ORN) B24 (PNK)
    Fig 3: Audio-Navigation Unit Connector B (24P)
    G06431981Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -There is a short in the wire(s) between the audio-navigation unit and the HandsFreeLink control unit. Replace the affected shielded harness.

    NO  -Go to step 16.

  16. Check for continuity between body ground and audio-navigation unit connector B (24P) according to the table.
    CONTINUITY CHART

    Audio-navigation unit connector Wire color
    B11 LT BLU
    B12 LT GRN
    B23 ORN
    B24 PNK
    Fig 4: Audio-Navigation Unit Connector B (24P)
    G06431982Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -There is a short to body ground in the wire(s) between the audio-navigation unit and the HandsFreeLink control unit. Replace the affected shielded harness.

    NO  -Replace the HandsFreeLink control unit (see CONTROL UNIT INPUT TEST/REPLACEMENT ).

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