Audio-Navigation System DTC Troubleshooting: 2605
DTC 2605: H/U Diag: Connect
NOTE:
Check the vehicle battery condition first.
This navigation DTC sets when a RAM status malfunction in the multi-information display unit is detected (the Display icon is red in the System Link).
Check for F-CAN and B-CAN DTCs and resolve them before troubleshooting.
Before you troubleshoot, make sure to follow the General Troubleshooting Information.
Check any official Honda service website for more service information about the navigation system.
1.
Problem verification 1:

Problem verification 1
?1.
Clear the hard error codes.

?2.
Press the engine start/stop button to select the OFF mode and then select the ON mode.

?3.
Check for hard error codes.

Is DTC 2605 indicated?

     
YES
     
     
     
The failure is duplicated, go to step 2.
     
NO
     
     
     
Intermittent failure, the system is OK at this time.?
2.
Problem verification 2:

Problem verification 2
?1.
Go into the System Diagnostic Mode, and select the Radio in the System Link.

Is Connection NG indicated?

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