Manufacturer Code Charts: 2605

Navigation System DTC Troubleshooting: 2605

DTC 2605: H/U Diag: Connect

NOTE:

- Check the vehicle battery condition first.

- 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 (With Navigation)

1. Clear the hard error code. How to Troubleshoot the Navigation System (With Navigation)

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

3. Check the Error History. How to Troubleshoot the Navigation System (With Navigation)

Is Hard Error 2601 indicated?
YES - Do the 2601 troubleshooting.

NO - Go to step 4.


4. Go into the Diagnostic Menu, and select the Self-Diagnosis Mode in the Select Diagnosis Items menu. Navigation System Diagnostic Mode (With Navigation)

5. Select the System Links.

Is the Radio icon red?
YES - Go to step 6.

NO - Intermittent failure, the system is OK at this time.


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

7. Check for poor connections or loose terminals at audio unit connector E (14P), XM receiver connector A (14P), and navigation display unit 28P connector.

Are there connections OK?
YES - Go to step 8.

NO - Repair poor connections or loose terminals, and recheck the self-diagnosis mode. Navigation System Diagnostic Mode (With Navigation)


8. Disconnect audio unit connector E (14P), XM receiver connector A (14P), and navigation display unit 28P connector.

9. Connect audio unit connector E (14P) terminals No. 9 and No. 10 with a jumper wire.






10. Check for continuity between the navigation display unit 28P connector terminals No. 3 and No. 17.

Is there continuity?
YES - Go to step 11.

NO - Open in the wire(s) between the audio unit and the navigation display unit. Replace the affected shielded harness.






11. Replace a known-good audio unit. Audio Unit Removal/Installation (With Navigation)

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

13. Clear the hard error code.

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

15. Check for the hard error code. How to Troubleshoot the Navigation System (With Navigation)

Is DTC 2605 indicated?
YES - Replace the original audio unit.

NO - Replace the navigation display unit. Service and Repair