Without AcuraLink

Navigation System DTC Troubleshooting: 2705

DTC 2705:

HFL Diag

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- This navigation DTC sets when a problem is detected in the connecting lines (open or short) or in the HandsFreeLink control unit.
- Before you troubleshoot, make sure to follow the general troubleshooting information How to Troubleshoot the Navigation System.

Without AcuraLink

1. Clear the hard error code.

2. Turn the ignition switch to LOCK (0) and then back to ON (II).

3. Go into the System Diagnostic Mode, and select the Self-Diagnosis Mode.

4. Check 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.

7. Clear the DTCs with the HDS.

8. Turn the ignition switch to LOCK (0) and then back to ON (II).

9. Check for DTCs with the HDS.

Are there any DTCs indicated?

YES -

Do the HFL DTC troubleshooting.�

NO -

Go to step 10.

10. Do the B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A, and check the communication with the HandsFreeLink control unit.

Does the HandsFreeLink control unit control unit communicate with the HDS?

YES -

Go to step 11.

NO -

Go to the HandsFreeLink control unit troubleshooting.�

11. Disconnect the HandsFreeLink control unit 28P connector and navigation unit connector D (5P).

12. Check for continuity between body ground and HandsFreeLink control unit 28P connector according to the table.









Is there continuity?

YES -

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

NO -

Go to step 13.

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









Is there continuity between any of terminals?

YES -

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

NO -

Go to step 14.

14. Check for continuity between the navigation unit connector D (5P) and HandsFreeLink control unit 28P connector according to the table.









Is there continuity?

YES -

Replace the HandsFreeLink control unit Service and Repair.�

NO -

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