LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Honda >> 2014 >> Accord Plug-In >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Navigation System - Testing & Troubleshooting (Hybrid) >> Symptom Troubleshooting >> Navigation System Symptom Troubleshooting - Voice Control Does Not Work/Respond (With Display Audio) (2017)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Navigation System Symptom Troubleshooting - Voice Control Does Not Work/Respond (With Display Audio) (2017)

NOTE:
  • Check the vehicle 12 volt battery condition first .
  • Make sure that the latest navigation software is installed.
  • Before assuming that a voice complaint is hardware related, ensure that the voice control system is being operated correctly:
    • Make sure you are on the correct screen when trying to issue a voice command. For instance, the command "Find the nearest Italian Restaurant" only works on Map screen (see the Navigation Manual for a complete list of allowed voice commands for the information being displayed)
    • Close the windows and moonroof
    • Pause after pressing the TALK button then give a voice command clearly in a natural speaking voice. If the system cannot recognize your command, speak louder
    • If you speak a command with something in your mouth, or your voice is too husky, or high pitched, the system may misunderstand your command
  • Determine if the problem only happens to one person, or everyone who uses the system.
  • If the system only has a problem with one person's voice, this should be considered a system limitation.
  • Check the connectors for poor connections or loose terminals.
  1. HFL-navigation voice control switch operation check

    -1. Turn the vehicle to the ON mode.

    - 2. Go into the System Diagnostic Mode, and use the Hard Key to check the HFL switch.

    Do all the HFL-navigation voice control switch buttons respond?

    YES 

    Go to step 2.

    NO 

    Go to step 11.

  2. Microphone operation check

    -1. Go into the System Diagnostic Mode, and use the Mic to check the microphone.

    - 2. Press the TALK button, then say "testing" in front of the microphone to check the Mic level.

    Is the microphone level OK?

    YES 

    Go to step 3.

    NO 

    Go to step 4.

  3. Problem verification

    -1. Turn the vehicle to the OFF (LOCK) mode then the ON mode.

    - 2. Pressing the TALK button, then give a voice command "Audio" clearly in a natural speaking voice.

    Does the audio system turn on by the voice command?

    YES 

    Intermittent failure, the system is OK at this time.

    NO 

    Replace the audio-navigation unit - Refer to: Audio-Navigation Unit Removal and Installation (2014 2015), or Audio-Navigation Unit Removal and Installation (With Display Audio) (2017) .

  4. Determine possible failure area (MIC+ line, others)

    -1. Turn the vehicle to the OFF (LOCK) mode.

    - 2. Disconnect the following connector.

    Front HFL-navigation-ANC/active sound control microphone 8P connector

    - 3. Turn the vehicle to the ON mode.

    - 4. Measure the voltage between test points 1 and 2.

    Test condition Vehicle ON mode
      Front HFL-navigation-ANC/active sound control microphone 8P connector: disconnected
    Test point 1 Front HFL-navigation-ANC/active sound control microphone 8P connector No. 1 - Refer to: HFL-Navigation Microphone Connector for Inputs and Outputs, or HFL-Navigation Microphone Connector for Inputs and Outputs (With Display Audio) (2017)
    Test point 2 Front HFL-navigation-ANC/active sound control microphone 8P connector No. 2 - Refer to: HFL-Navigation Microphone Connector for Inputs and Outputs, or HFL-Navigation Microphone Connector for Inputs and Outputs (With Display Audio) (2017)

    Is there about 8.0 V?

    YES 

    Go to step 5.

    NO 

    Go to step 9.

  5. Open wire check (MIC+ line)

    -1. Turn the vehicle to the OFF (LOCK) mode.

    - 2. Disconnect the following connector.

    Audio-navigation unit connector J (28P)

    - 3. Check for continuity between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
      Front HFL-navigation-ANC/active sound control microphone 8P connector: disconnected
      Audio-navigation unit connector J (28P): disconnected
    Test point 1 Front HFL-navigation-ANC/active sound control microphone 8P connector No. 2 - Refer to: HFL-Navigation Microphone Connector for Inputs and Outputs, or HFL-Navigation Microphone Connector for Inputs and Outputs (With Display Audio) (2017)
    Test point 2 Audio-navigation unit connector J (28P) No. 11 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (2014), or Audio-Navigation Unit Connector for Inputs and Outputs (2015), or Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)

    Is there continuity?

    YES 

    The MIC+ wire is not open. Go to step 6.

    NO 

    There is an open in the wire between the front HFL-navigation-ANC/active sound control microphone and the audio-navigation unit. Replace the affected shielded harness.

  6. Shorted wire check (MIC+ line)

    -1. Check for continuity between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
      Front HFL-navigation-ANC/active sound control microphone 8P connector: disconnected
      Audio-navigation unit connector J (28P): disconnected
    Test point 1 Audio-navigation unit connector J (28P) No. 11 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (2014), or Audio-Navigation Unit Connector for Inputs and Outputs (2015), or Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)
    Test point 2 Body ground

    Is there continuity?

    YES 

    There is a short to body ground in the wire between the front HFL-navigation-ANC/active sound control microphone and the audio-navigation unit. Replace the affected shielded harness.

    NO 

    The MIC+ wire is not shorted. Go to step 7.

  7. Shorted wire check (MIC+ line to MIC- line, SH MIC line)

    -1. Check for continuity between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
      Front HFL-navigation-ANC/active sound control microphone 8P connector: disconnected
      Audio-navigation unit connector J (28P): disconnected
    Test circuit 1  
    Test point 1 Audio-navigation unit connector J (28P) No. 10 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (2014), or Audio-Navigation Unit Connector for Inputs and Outputs (2015), or Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)
    Test point 2 Audio-navigation unit connector J (28P) No. 11 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (2014), or Audio-Navigation Unit Connector for Inputs and Outputs (2015), or Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)
    Test circuit 2  
    Test point 1 Audio-navigation unit connector J (28P) No. 11 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (2014), or Audio-Navigation Unit Connector for Inputs and Outputs (2015), or Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)
    Test point 2 Audio-navigation unit connector J (28P) No. 12 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (2014), or Audio-Navigation Unit Connector for Inputs and Outputs (2015), or Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)

    Is there continuity?

    YES 

    There is a short in the wires between the front HFL-navigation-ANC/active sound control microphone and the audio-navigation unit. Replace the affected shielded harness.

    NO 

    The MIC+ wire is OK. Go to step 8.

  8. Microphone check (substitution)

    -1. Substitute a known-good front HFL-navigation-ANC/active sound control microphone, and recheck.

    Does the symptom go away?

    YES 

    Replace the original front HFL-navigation-ANC/active sound control microphone .

    NO 

    Replace the audio-navigation unit - Refer to: Audio-Navigation Unit Removal and Installation (2014 2015), or Audio-Navigation Unit Removal and Installation (With Display Audio) (2017) .

  9. Determine possible failure area (MIC PWR line, MIC- line)

    -1. Measure the voltage between test points 1 and 2.

    Test condition Vehicle ON mode
      Front HFL-navigation-ANC/active sound control microphone 8P connector: disconnected
    Test point 1 Front HFL-navigation-ANC/active sound control microphone 8P connector No. 4 - Refer to: HFL-Navigation Microphone Connector for Inputs and Outputs, or HFL-Navigation Microphone Connector for Inputs and Outputs (With Display Audio) (2017)
    Test point 2 Body ground

    Is there about 8.0 V?

    YES 

    There is an open in the wire between the front HFL-navigation-ANC/active sound control microphone and the audio-navigation unit. Replace the affected shielded harness.

    NO 

    Go to step 10.

  10. Open wire check (MIC PWR line)

    -1. Measure the voltage between test points 1 and 2.

    Test condition Vehicle ON mode
      Front HFL-navigation-ANC/active sound control microphone 8P connector: disconnected
    Test point 1 Audio-navigation unit connector J (28P) No. 25 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (2014), or Audio-Navigation Unit Connector for Inputs and Outputs (2015), or Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)
    Test point 2 Body ground

    Is there about 8.0 V?

    YES 

    Repair an open in the wire between the front HFL-navigation-ANC/active sound control microphone and the audio-navigation unit.

    NO 

    Replace the audio-navigation unit - Refer to: Audio-Navigation Unit Removal and Installation (2014 2015), or Audio-Navigation Unit Removal and Installation (With Display Audio) (2017) .

  11. Determine possible failure area (Audio remote switch circuit, others)

    -1. Go into the System Diagnostic Mode, and use the Hard Key to check the audio remote switch.

    Does all the audio remote switch buttons respond?

    YES 

    Go to step 12.

    NO 

    AUDIO REMOTE SWITCH DOES NOT WORK PROPERLY (AUDIO PANEL BUTTONS WORK) (WITH NAVIGATION) .

  12. HFL switch check

    -1. Turn the vehicle to the OFF (LOCK) mode.

    - 2. Do the HFL Switch Test.

    Is the HFL switch OK?

    YES 

    Go to step 13.

    NO 

    Replace the HFL switch .

  13. Determine possible failure area (Audio-navigation unit, others)

    -1. Reconnect the HFL switch 6P connector.

    - 2. Disconnect the following connectors.

    Audio-navigation unit connector A (24P)
    Audio-navigation unit connector B (20P)

    - 3. Measure the resistance between test points 1 and 2 as specified in the table.

    Test condition Vehicle OFF (LOCK) mode
      Audio-navigation unit connector A (24P): disconnected
      Audio-navigation unit connector B (20P): disconnected
    Test point 1 Audio-navigation unit connector A (24P) No. 11 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (2014), or Audio-Navigation Unit Connector for Inputs and Outputs (2015), or Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)
    Test point 2 Audio-navigation unit connector B (20P) No. 12 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (2014), or Audio-Navigation Unit Connector for Inputs and Outputs (2015), or Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)
    Button held down HANG-UP/BACK PICK-UP TALK No button pressed
    Resistance About 47 Ω About 222 Ω About 2.25 kΩ About 10 kΩ

    Is the resistance OK?

    YES 

    Go to step 14.

    NO 

    Go to step 15.

  14. Audio-navigation unit check (HFT/NAVI REMOTE SW line)

    -1. Disconnect the following connector.

    HFL switch 6P connector

    - 2. Check for continuity between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
      HFL switch 6P connector: disconnected
      Audio-navigation unit connector B (20P): disconnected
    Test point 1 Audio-navigation unit connector B (20P) No. 12 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (2014), or Audio-Navigation Unit Connector for Inputs and Outputs (2015), or Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)
    Test point 2 Body ground

    Is there continuity?

    YES 

    Repair a short to body ground in the wire between the audio-navigation unit and the HFL switch. If the wire is OK, replace the cable reel .

    NO 

    Replace the audio-navigation unit - Refer to: Audio-Navigation Unit Removal and Installation (2014 2015), or Audio-Navigation Unit Removal and Installation (With Display Audio) (2017) .

  15. Open wire check (HFT/NAVI REMOTE SW line)

    -1. Disconnect the following connector.

    HFL switch 6P connector

    - 2. Check for continuity between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
      Audio-navigation unit connector B (20P): disconnected
      HFL switch 6P connector: disconnected
    Test point 1 Audio-navigation unit connector B (20P) No. 12 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (2014), or Audio-Navigation Unit Connector for Inputs and Outputs (2015), or Audio-Navigation Unit Connector for Inputs and Outputs (With Display Audio) (2017)
    Test point 2 HFL switch 6P connector No. 3
    GHH261444Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    The HFT/NAVI REMOTE SW wire is OK. Go to step 16.

    NO 

    Repair an open in the wire between the audio-navigation unit and the HFL switch. If the wire is OK, replace the cable reel .

  16. Open wire check (REMOTE SW GND line)

    -1. Disconnect the following connector.

    Audio remote switch 12P connector

    - 2. Check for continuity between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
      Audio remote switch 12P connector: disconnected
      HFL switch 6P connector: disconnected
    Test point 1 Audio remote switch 12P connector No. 4
    Test point 2 HFL switch 6P connector No. 4
    GHH261445Courtesy of HONDA, U.S.A., INC.
    GHH261446Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    Replace the audio remote switch .

    NO 

    Repair an open in the wire between the audio remote switch and the HFL switch.

scientia non olet · About LEMON Manuals