Navigation System Symptom Troubleshooting - Interface dial and navigation hard buttons do not work
Interface dial and navigation hard buttons do not work
NOTE:
Check the vehicle battery condition first.
Check any official Honda service website for more service information about the navigation system.
Check the connectors for poor connections or loose terminals.
1.
Problem verification 1:

Problem verification 1
?1.
Press the engine start/stop button to select the ON mode.

?2.
Check if the navigation system operate properly by interface dial and navigation hard buttons.

Do the interface dial and navigation hard buttons operate properly?

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

Operation check
?1.
Go into the System Diagnostic Mode, and check if the diagnosis runs.

Did the system diagnostic mode run?

     
YES
     
     
     
Go to step 3.
     
NO
     
     
     
Go to step 4.
3.
Problem verification 2:

Problem verification 2
?1.
Press the engine start/stop button to select the ON mode.

?2.
Go into the System Diagnostic Mode, and use the Unit Check diagnosis to check the Hard Key.

?3.
Operate all buttons in the appropriate switch list.
Button Name
NAV button
PHONE button
INFO button
AUDIO button
BACK button
MENU button
DAY/NIGHT (enu_1740914_1.0) button
SETTINGS button
ENTER button

Do all the items in the appropriate switch list work properly?

     
YES
     
     
     
Intermittent failure, the system is OK at this time.?
     
NO
     
     
     
4.
Fuse check:

Fuse check
?1.
Press the engine start/stop button to select the OFF mode.

?2.
Check the following fuse.
Fuse
No. B37 (7.5 A)
Location
Under-dash fuse/relay box

Are the fuses OK?

     
YES
     
     
     
Go to step 5.
     
NO
     
     
     
Replace the fuse, and recheck. If the fuse blows again, check for a short in the No. B37 (7.5 A) fuse circuits.?
5.
Open wire check (ACC line):

Open wire check (ACC line)
?1.
Press the engine start/stop button to select the ON mode.

?2.
Measure the voltage between test points 1 and 2.
Test condition
ON mode
Test circuit
ACC
Test point 1
Navigation switch panel 12P connector No. 1 (PUR)
Test point 2
Body ground


Is there battery voltage?

     
YES
     
     
     
The ACC wire is OK. Go to step 6.
     
NO
     
     
     
Repair an open in the wire between the No. B37 (7.5 A) fuse in the under-dash fuse/relay box and the navigation switch panel.?
6.
Open wire check (GND line):

Open wire check (GND line)
?1.
Measure the voltage between test points 1 and 2.
Test condition
ON mode
Test circuit
GND
Test point 1
Navigation switch panel 12P connector No. 12 (BRN)
Test point 2
Body ground


Is there less than 0.2 V?

     
YES
     
     
     
The GND wire is OK. Go to step 7.
     
NO
     
     
     
Repair an open or high resistance in the wire between the navigation switch panel and body ground (G506).?
7.
Shorted wire check (JOG line):

Shorted wire check (JOG line)
?1.
Press the engine start/stop button to select the OFF mode.

?2.
Disconnect the following connectors.

?3.
Check for continuity between test points 1 and 2.
Test condition
OFF mode
 
Audio-navigation unit connector F (18P): disconnected
 
Navigation switch panel 12P connector: disconnected
Test circuit
JOG
Test point 1
Audio-navigation unit connector F (18P) No. 16 (WHT)
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
There is a short to body ground in the wire between the audio-navigation unit and the navigation switch panel. Replace the affected shielded harness.?
     
NO
     
     
     
The JOG wire is not shorted to ground. Go to step 8.
8.
Shorted wire check (SH JOG line to JOG line):

Shorted wire check (SH JOG line to JOG line)
?1.
Check for continuity between test points 1 and 2.
Test condition
OFF mode
 
Audio-navigation unit connector F (18P): disconnected
 
Navigation switch panel 12P connector: disconnected
Test circuit
SH JOG, JOG
Test point 1
Audio-navigation unit connector F (18P) No. 9 (BLK)
Test point 2
Audio-navigation unit connector F (18P) No. 16 (WHT)


Is there continuity?

     
YES
     
     
     
There is a short in the wires between the audio-navigation unit and the navigation switch panel. Replace the affected shielded harness.?
     
NO
     
     
     
The SH JOG and the JOG wires are not shorted. Go to step 9.
9.
Open wire check (JOG line):

Open wire check (JOG line)
?1.
Check for continuity between test points 1 and 2.
Test condition
OFF mode
 
Audio-navigation unit connector F (18P): disconnected
 
Navigation switch panel 12P connector: disconnected
Test circuit
JOG
Test point 1
Audio-navigation unit connector F (18P) No. 16 (WHT)
Test point 2
Navigation switch panel 12P connector No. 5 (WHT)


Is there continuity?

     
YES
     
     
     
The JOG wire is OK. Go to step 10.
     
NO
     
     
     
There is an open in the wire between the audio-navigation unit and the navigation switch panel. Replace the affected shielded harness.?
10.
Navigation switch panel check (substitution):

Navigation switch panel check (substitution)
?1.
Substitute a known-good navigation switch panel.

?2.
Reconnect all the connectors, and recheck.

Does the symptom go away?

     
YES
     
     
     
Replace the original navigation switch panel.?
     
NO