Manufacturer Code Charts: 2705

Navigation System DTC Troubleshooting: 2705

DTC 2705:

HFL Diag

NOTE

- Check the vehicle battery condition first 12 Volt Battery Test.
- This navigation DTC sets when a problem (open or short) is detected in the GA-Net BUS or in the HandsFreeLink control unit.
- Before you troubleshoot, make sure to follow the general troubleshooting information How to Troubleshoot the Navigation System.

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 Navigation System Diagnostic 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. Select the HFL in the System Links.

Is DTC B1792 indicated?

YES -

Do the DTC B1792 troubleshooting B1792.

NO -

Go to step 7.

7. Turn the ignition switch to LOCK (0).

8. Remove the audio-navigation unit Audio-Navigation Unit Removal/Installation, and disconnect audio-navigation unit connector E (14P).

9. Check for continuity between body ground and audio-navigation unit connector E (14P) terminals No. 9 and No. 10 individually.





Is there continuity?

YES -

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

NO -

Go to step 10.

10. Disconnect the HandsFreeLink control unit 32P connector.

11. Connect HandsFreeLink control unit 32P connector terminals No. 4 and No. 5 with a jumper wire.






12. Check for continuity between audio-navigation unit connector E (14P) terminals No. 9 and No. 10.





Is there continuity?

YES -

Go to step 13.

NO -

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

13. Remove the jumper wire.

14. Check for continuity between the terminals of audio-navigation unit connector E (14P) according to the table.









Is there continuity between any of the terminals?

YES -

There is a short in the wires between the audio-navigation unit and the HandsFreeLink control unit. Replace the affected shielded harness.

NO -

Substitute a known-good audio-navigation unit Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation. If the symptom/indication is still present, replace the HandsFreeLink control unit Service and Repair.