Honda HR-V: Handsfreelink System Symptom Troubleshooting - HFL Does Not Respond (Without Navigation, Color Audio Type (5-inch Screen) )

NOTE:

• Check the vehicle 12 volt battery condition first.
• You must be able to duplicate the customer's concern to successfully diagnose the problem. If you cannot duplicate the issue, have the customer demonstrate it.
• Check the connectors for poor connections or loose terminals.

1. HFL switch operation check:

1. Turn the vehicle to the ON mode.
2. Go into the System Diagnostic Mode, and use the Knob Check in the Version/System to check the HFL switch - Refer to: Audio System Sound Quality Diagnosis, or Audio System Diagnostic Mode (Without Navigation, Display Audio Type (7-inch Screen) ), or Audio System Diagnostic Mode (Without Navigation, Color Audio Type (5-inch Screen) ).

Does all the HFL switch buttons respond?

YES

Go to step 2.

NO

Go to step 7.

2. Bluetooth module check.

Go into the System Diagnostic Mode, and use the Version Display in the Version/System to check the Bluetooth module - Refer to: Audio System Sound Quality Diagnosis, or Audio System Diagnostic Mode (Without Navigation, Display Audio Type (7-inch Screen) ), or Audio System Diagnostic Mode (Without Navigation, Color Audio Type (5-inch Screen) ).

Is the Bluetooth module version indicated?

YES

Go to step 3.

NO

Go to step 6.

3. Microphone connection check.

Go into the System Diagnostic Mode, and use the Connection to check the MIC connection - Refer to: Audio System Sound Quality Diagnosis, or Audio System Diagnostic Mode (Without Navigation, Display Audio Type (7-inch Screen) ), or Audio System Diagnostic Mode (Without Navigation, Color Audio Type (5-inch Screen) ).

Does the MIC connection indicate OK?

YES

Go to step 4.

NO

Go to step 13.

4. Cell phone connection check (known-good phone):

1. Turn the vehicle to the OFF (LOCK) mode then the ON mode.
2. Pair a known-good Bluetooth cell phone to the customer's vehicle.

Can you pair the Bluetooth cell phone?

YES: USA models

Go to HFL system troubleshooting.

YES: Except USA models

Go to step 5.

NO

Go to step 6.

5. Cell phone connection check (customer's phone).

Pair the customer's Bluetooth cell phone to the customer's vehicle.

Can you pair the Bluetooth cell phone, and does it operate normally?

YES

The HFL system is OK at this time. Inquire if there are any known issues for the problem.

NO

The customer's cell phone is defective or not compatible.

6. Audio panel check (substitution):

1. Turn the vehicle to the OFF (LOCK) mode.
2. Substitute a known-good audio panel - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ), and recheck.

Does the symptom go away?

YES

Replace the original audio panel.

NO

Replace the audio unit - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).

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

Go into the System Diagnostic Mode, and use the Knob Check in the Version/System to check the audio remote switch - Refer to: Audio System Sound Quality Diagnosis, or Audio System Diagnostic Mode (Without Navigation, Display Audio Type (7-inch Screen) ), or Audio System Diagnostic Mode (Without Navigation, Color Audio Type (5-inch Screen) ).

Does all the audio remote switch buttons respond?

YES

Go to step 8.

NO

Go to Audio remote switch does not work properly (audio unit buttons work) (Without Navigation, Color Audio Type (5-inch Screen) ).

8. 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 9.

NO

Replace the HFL switch.

9. Determine possible failure area (audio unit, others):

1. Reconnect the HFL switch 7P connector.
2. Disconnect the following connector.

NOTE: Eject the disc before disconnecting the audio unit to prevent damaging the CD player's load mechanism.

Audio unit connector A (24P)

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

Three Buttons Type

Two Buttons Type

Is the resistance OK?

YES

Go to step 10.

NO

Go to step 11.

10. Audio unit check (HFT/NAVI REMOTE SW line):

1. Disconnect the following connector.

HFL switch 7P connector

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

Is there continuity?

YES

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

NO

Replace the audio unit - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).

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

1. Disconnect the following connector.

HFL switch 7P connector

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

Is there continuity?

YES

The HFT/NAVI REMOTE SW wire is OK. Go to step 12.

NO

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

12. Open wire check (AUDIO GND line):

1. Disconnect the following connector.

Audio remote switch 12P connector

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

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.

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

1. Turn the vehicle to the OFF (LOCK) mode.
2. Disconnect the following connector.

HFL microphone 3P connector

3. Turn the vehicle to the ON mode.
4. Measure the voltage between test points 1 and 2.

Is there about 8.0 V?

YES

Go to step 17.

NO

Go to step 14.

14. Open wire check (MIC+ line).

Measure the voltage between test points 1 and 2.

Is there about 8.0 V?

YES

There is an open in the wire between the audio unit and the HFL microphone. Replace the affected shielded harness.

NO

The MIC+ wire is not open. Go to step 15.

15. Shorted wire check (MIC+ line):

1. Turn the vehicle to the OFF (LOCK) mode.
2. Disconnect the following connector.

Audio unit connector C (24P)

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

Is there continuity?

YES

There is a short in the wire between the audio unit and the HFL microphone. Replace the affected shielded harness.

NO

The MIC+ wire is not shorted. Go to step 16.

16. Shorted wire check (MIC+ line to another lines).

Check for continuity between test points 1 and 2.

Is there continuity?

YES

There is a short in the wires between the audio unit and the HFL microphone. Replace the affected shielded harness.

NO

Replace the audio unit - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).

17. HFL microphone check (MIC- line):

1. Turn the vehicle to the OFF (LOCK) mode.
2. Check for continuity between test points 1 and 2.

Is there continuity?

YES

Replace the HFL microphone.

NO

Go to step 18.

18. Open wire check (MIC - line):

1. Disconnect the following connector.

Audio unit connector C (24P)

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

Is there continuity?

YES

Replace the audio unit - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).

NO

There is an open in the wire between the audio unit and the HFL microphone. Replace the affected shielded harness.

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