The HFL messages cannot be heard or are weak (with navigation)

NOTE: Before doing this troubleshooting, refer to GENERAL TROUBLESHOOTING INFORMATION to make sure the phone is compatible and configured correctly. You can also check online at handsfreelink.honda.com, or call the HFL support desk at 888-528-7876.

Turn the ignition switch to ON (II).
Check that the audio system is operating normally and the speaker sound levels from different audio sources (AM, FM, CD, Navigation, etc.).
Does the audio system work normally, and is the audio output from the speaker normal when playing various audio sources?

YES -Go to step 3.

NO -Go to No sound is heard from the speaker(s), with navigation troubleshooting (see NO SOUND IS HEARD FROM THE SPEAKER(S) (DISPLAY IS NORMAL) (WITH NAVIGATION) ).
Connect the HDS to the DLC (see HOW TO CHECK FOR DTCS WITH THE HDS ).
Clear the DTCs with the HDS.
Turn the ignition switch to LOCK (0), and then back to ON (II).
Check for DTCs with the HDS.
Are there any DTCs indicated?

YES -Repair the indicated DTCs.

NO -Go to step 7.
Press the HFL TALK button.
Does the audio system mute when HFL messages are being played?

YES -Go to step 8.

NO -Go to step 14.
Turn the ignition switch to LOCK (0).
Remove the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).
NOTE:
- Eject all the audio discs before removing the audio-navigation unit to prevent damaging the CD player's load mechanism.
- Remove the PC card before removing the audio-navigation unit.
Disconnect audio-navigation unit connector B (24P) and the HandsFreeLink control unit 28P connector.
Check for continuity between the HandsFreeLink control unit 28P connector terminals No. 4 and No. 18 and audio-navigation unit connector B (24P) terminals No. 16 and No. 4 respectively.

Fig 1: Checking Continuity Between Handsfreelink Control Unit 28P Connector Terminals No. 4, 18 And Audio-Navigation Unit Connector B (24P) Terminals No. 16, 4
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 12.

NO -There is an open in the wire(s) between the HandsFreeLink control unit and the audio-navigation unit. Replace the affected shielded harness.
Check for continuity between body ground and audio-navigation unit connector B (24P) terminals No. 4 and No. 16 individually.

Fig 2: Checking Continuity Between Body Ground And Audio-Navigation Unit Connector B (24P) Terminals No. 4 And 16
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

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

NO -Go to step 13.

Check for continuity between the HandsFreeLink control unit 28P connector according to the table.

CONNECTOR TERMINAL REFERENCE CHART

From terminal (wire color)	To terminals (wire color)
17(GRY)	4 (GRN), 18 (RED)
4 (GRN)	18 (RED)

Fig 3: Identifying Handsfreelink Control Unit 28P Connector

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

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

NO -Substitute a known-good HandsFreeLink control unit (see CONTROL UNIT INPUT TEST/REPLACEMENT ), and recheck. If the symptom goes away, replace the original HandsFreeLink control unit. If the symptom does not go away, replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).

Press the HFL TALK button.
Does "TEL" appear on the audio-navigation unit display when you press the HFL TALK button?

YES -Go to step 15.

NO -Go to step 20.
Turn the ignition switch to LOCK (0).
Remove the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).
NOTE:
- Eject all the audio discs before removing the audio-navigation unit to prevent damaging the CD player's load mechanism.
- Remove the PC card before removing the audio-navigation unit.
Disconnect audio-navigation unit connector B (24P) and the HandsFreeLink control unit 28P connector.
Check for continuity between HandsFreeLink control unit 28P connector terminal No. 12 and audio-navigation unit connector B (24P) terminal No. 5.

Fig 4: Checking Continuity Between Handsfreelink Control Unit 28P Connector Terminal No. 12 And Audio-Navigation Unit Connector B (24P) Terminal No. 5
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 19.

NO -Repair an open in the wire between the HandsFreeLink control unit and the audio-navigation unit.
Check for continuity between HandsFreeLink control unit 28P connector terminal No. 12 and body ground.

Fig 5: Checking Continuity Between Handsfreelink Control Unit 28P Connector Terminal No. 12 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

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

NO -Substitute a known-good HandsFreeLink control unit (see CONTROL UNIT INPUT TEST/REPLACEMENT ), and recheck. If the symptom goes away, replace the original HandsFreeLink control unit (see CONTROL UNIT INPUT TEST/REPLACEMENT ). If the symptom does not go away, replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).
Turn the ignition switch to LOCK (0).
Disconnect the HFL-navigation voice control switch 5P connector, then connect the cable reel 20P connector.
Disconnect the HandsFreeLink control unit 28P connector.
Check for continuity between HandsFreeLink control unit 28P connector terminal No. 13 and HFL-navigation voice control switch 5P connector terminal No. 3.

Fig 6: Checking Continuity Between Handsfreelink Control Unit 28P Connector Terminal No. 13 And HFL-Navigation Voice Control Switch 5P Connector Terminal No. 3
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Do the HFL Switch Test (see HFL SWITCH TEST ).

NO -Repair an open in the wire between the HandsFreeLink control unit and the HFL-navigation voice control switch.