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Home >> Acura >> 2020 >> ILX >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> HANDSFREELINK System - Testing & Troubleshooting (Except Hybrid) >> Symptom Troubleshooting >> HandsFreeLink System - HFL does not respond(With Navigation) (2013 2014 2015)

HandsFreeLink System - HFL does not respond(With Navigation) (2013 2014 2015)

HFL does not respond 

NOTE: Check the vehicle battery condition first .

  1. Problem verification 1

    -1. Press the engine start/stop button to select the ON mode.

    -2. Press the PHONE button, and select the PHONE SETUP.

    Is the Confirmation screen displayed?

    YES 

    Go to step 2.

    NO 

    The failure is duplicated, go to step 3.

  2. Problem verification 2

    -1. Do the HFL Self-Diagnostic Function .

    Is the HFL prompt played?

    YES: "The HFT is OK." is played

    Intermittent failure, the system is OK at this time. If possible, have the client demonstrate the issue.

    YES: "The HFT is NG." is played

    Check for HFL DTCs .

    NO 

    Go to The HFL prompts and incoming call cannot be heard or are weak (HFL information display is normal) (with navigation) troubleshooting .

  3. Determine possible failure area (GA +B line, others)

    -1. Press the engine start/stop button to select the OFF mode.

    -2. Disconnect the following connector.

    HandsFreeLink control unit 32P connector

    -3. Measure the voltage between test points 1 and 2.

    Test condition OFF mode
      HandsFreeLink control unit 32P connector: disconnected
    Test circuit GA +B
    Test point 1 HandsFreeLink control unit 32P connector No. 32 (BLU)
    Test point 2 Body ground
    GHH471351Courtesy of HONDA, U.S.A., INC.

    Is there battery voltage?

    YES 

    The GA +B wire is OK. Go to step 6.

    NO 

    Go to step 4.

  4. Open wire check (GA +B line)

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

    Test condition OFF mode
      HandsFreeLink control unit 32P connector: disconnected
    Test circuit GA +B
    Test point 1 Audio-navigation unit connector C (14P) No. 6 (BLU)
    Test point 2 Body ground
    GHH471352Courtesy of HONDA, U.S.A., INC.

    Is there battery voltage?

    YES 

    Repair an open in the wire between the audio-navigation unit and the HandsFreeLink control unit.

    NO 

    The GA +B wire is not open. Go to step 5.

  5. Shorted wire check (GA +B line)

    -1. Disconnect the following connectors.

    Audio-navigation unit connector C (14P)
    XM receiver connector A (14P) (Canada models)

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

    Test condition OFF mode
      HandsFreeLink control unit 32P connector: disconnected
      Audio-navigation unit connector C (14P): disconnected
      XM receiver connector A (14P) (Canada models): disconnected
    Test circuit GA +B
    Test point 1 HandsFreeLink control unit 32P connector No. 32 (BLU)
    Test point 2 Body ground
    GHH471353Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    Repair a short to body ground in the wire between the audio-navigation unit and the HandsFreeLink control unit.

    NO 

    Replace the audio-navigation unit .

  6. Determine possible failure area (GA GND line, others)

    -1. Reconnect the HandsFreeLink control unit 32P connector .

    -2. Press the engine start/stop button to select the ON mode.

    -3. Measure the voltage between test points 1 and 2.

    Test condition ON mode
    Test circuit GA GND
    Test point 1 HandsFreeLink control unit 32P connector No. 16 (YEL)
    Test point 2 Body ground
    GHH471354Courtesy of HONDA, U.S.A., INC.

    Is there less than 0.2 V?

    YES 

    The GA GND wire is OK. Go to step 8.

    NO 

    Go to step 7.

  7. Open wire check (GA GND line)

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

    Test condition ON mode
    Test circuit GA GND
    Test point 1 Audio-navigation unit connector C (14P) No. 10 (YEL)
    Test point 2 Body ground
    GHH471355Courtesy of HONDA, U.S.A., INC.

    Is there any voltage?

    YES 

    Replace the audio-navigation unit .

    NO 

    Repair an open or high resistance in the wire between the audio-navigation unit and the HandsFreeLink control unit.

  8. Determine possible failure area (GA SYS ON line, others)

    -1. Press the engine start/stop button to select the OFF mode.

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

    Test condition OFF mode
    Test circuit GA SYS ON
    Test point 1 HandsFreeLink control unit 32P connector No. 24 (ORN)
    Test point 2 Body ground
    GHH471356Courtesy of HONDA, U.S.A., INC.

    Is there battery voltage?

    YES 

    The GA SYS ON wire is OK. Go to step 10.

    NO 

    Go to step 9.

  9. Open wire check (GA SYS ON line)

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

    Test condition OFF mode
    Test circuit GA SYS ON
    Test point 1 Audio-navigation unit connector C (14P) No. 5 (ORN)
    Test point 2 Body ground
    GHH471357Courtesy of HONDA, U.S.A., INC.

    Is there battery voltage?

    YES 

    Repair an open in the wire between the audio-navigation unit and the HandsFreeLink control unit.

    NO 

    Replace the audio-navigation unit .

  10. Audio-navigation unit check 1

    -1. Press the engine start/stop button to select the ON mode.

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

    Test condition ON mode
    Test circuit GA SYS ON
    Test point 1 HandsFreeLink control unit 32P connector No. 24 (ORN)
    Test point 2 Body ground
    GHH471358Courtesy of HONDA, U.S.A., INC.

    Is there less than 0.2 V?

    YES 

    Go to step 11.

    NO 

    Replace the audio-navigation unit .

  11. Open wire check (GA BUS+ line, GA BUS- line)

    -1. Press the engine start/stop button to select the OFF mode.

    -2. Disconnect the following connectors.

    HandsFreeLink control unit 32P connector
    Audio-navigation unit connector C (14P)

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

    Test condition OFF mode
      HandsFreeLink control unit 32P connector: disconnected
      Audio-navigation unit connector C (14P): disconnected
    Test circuit GA BUS- 
    Test point 1 Audio-navigation unit connector C (14P) No. 11 (PNK)
    Test point 2 HandsFreeLink control unit 32P connector No. 12 (PNK)
    Test circuit GA BUS+
    Test point 1 Audio-navigation unit connector C (14P) No. 12 (BLU)
    Test point 2 HandsFreeLink control unit 32P connector No. 13 (BLU)
    GHH471359Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    The GA BUS+ and the GA BUS-  wires are OK. Go to step 12.

    NO 

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

  12. Audio-navigation unit check 2

    -1. Press the engine start/stop button to select the OFF mode.

    -2. Substitute a known-good HandsFreeLink control unit .

    -3. Reconnect all the connectors.

    -4. Press the engine start/stop button to select the ON mode.

    -5. Do the HFL Self-Diagnostic Function .

    Do you hear the prompt, "The HFT is OK."?

    YES 

    Replace the original HandsFreeLink control unit.

    NO 

    Replace the audio-navigation unit .

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