Manufacturer Code Charts: 2601

Navigation System DTC Troubleshooting: 2601

DTC 2601:

Display Diag: Connect

NOTE:

- Check the vehicle battery condition first Battery Test.
- Check any official Honda service website for more service information about the navigation system.
- This DTCs sets when a GA-NET bus problem is detected (open or short), or an internal ECU BUS circuit problem is detected (open or short).
- Check for B-CAN DTCs and resolve them before troubleshooting.
- 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 Diagnostic Menu, and select the Self-Diagnosis Mode in the Select Diagnosis Items menu Navigation System Diagnostic Mode.

4. Check the System Links.

Is the Display icon red?

YES -

Go to step 5.

NO -

Intermittent failure, the system is OK at this time.�

5. Check that the HFL system is operating properly.

Does the HFL work properly OK?

YES -

Go to step 6.

NO -

Go to step 10.

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

7. Disconnect these items:

- Audio-Navigation unit connector B (24P)
- Navigation display unit 28P connector
- HandsFreeLink control unit 28P connector

8. Connect audio-navigation unit connector B (24P) terminals No. 18 and No. 19 with a jumper wire.






9. Check for continuity between navigation display unit 28P connector terminals No. 4 and No. 5.





Is there continuity?

YES -

Replace the navigation display unit Service and Repair.�

NO -

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

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

11. Disconnect the HandsFreeLink control unit 28P connector.

12. Turn the ignition switch to ON (II).

13. Clear the hard error code.

14. Go into the Diagnostic Menu, and Select the Self-Diagnosis Mode in the Select Diagnosis Items Menu Navigation System Diagnostic Mode.

15. Check the System Links.

Is the Display icon red?

YES -

Go to step 16.

NO -

Replace the HandsFreeLink control unit Service and Repair.�

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

17. Disconnect audio-navigation unit connector B (24P) and the navigation display unit 28P connector.

18. Check for continuity between body ground and navigation display unit 28P connector terminals No. 4 and No. 5 individually.





Is there continuity?

YES -

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

NO -

Go to step 19.

19. Check for continuity between the terminals of navigation display unit 28P connector according to the table.









Is there continuity between any of the terminals?

YES -

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

NO -

Go to step 20.

20. Connect audio-navigation unit connector B (24P) terminals No. 18 and No. 19 with a jumper wire.






21. Check for continuity between navigation display unit 28P connector terminals No. 4 and No. 5.





Is there continuity?

YES -

Replace the navigation display unit Service and Repair.�

NO -

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