Symptom Troubleshooting

Navigation System Symptom Troubleshooting - Interface dial and/or buttons do not work

Interface dial and/or buttons do not work

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- Check any official Honda service website for more service information about the navigation system.
- Confirm the correct DVD color and version disc is installed in the navigation unit. as the wrong DVD or software version can cause a hardware malfunction.
- Check the connectors for poor connections or loose terminals.
- Inspect the navigation DVD for dirt or damage.
- Before troubleshooting, make sure you have the anti-theft code for the audio system and the navigation system.
- After troubleshooting, enter the anti-theft codes for the audio system and the navigation system.

1. Start the vehicle.

2. Use the interface buttons and jog dial on the navigation map screen.

Do the buttons and interface dial and/or jog dial work properly?

YES -

The system is OK at this time.�

NO -

Go to step 3.

3. Go into the Detail Information & Settings select Unit Check, and use Hard Key test under Unit Check.

Does the interface dial and/or joystick work properly?

YES -

Substitute a known-good navigation unit Service and Repair, and recheck. If the symptom/indication goes away, replace the original navigation unit Service and Repair.�

NO -

Go to step 4.

4. Measure the voltage between interface dial 5P connector terminal No. 4 and body ground.





Is there battery voltage?

YES -

Go to step 5.

NO -

Repair an open in the wire between the under-dash fuse/relay box and the interface dial.�

5. Measure the voltage between interface dial 5P connector terminal No. 3 and body ground.





Is there less than 0.2 V?

YES -

Go to step 6.

NO -

Repair an open in the wire between the interface dial and body ground (G403).�

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

7. Disconnect the interface dial 5P connector and navigation unit connector B (32P).

8. Check for continuity between navigation unit connector B (32P) terminal No. 23 and interface dial 5P connector terminal No. 1.





Is there continuity?

YES -

Go to step 9.

NO -

There is an open in the wire between the interface dial and the navigation unit. Replace the affected shielded harness.�

9. Check for continuity between navigation unit connector B (32P) terminals No. 23 and No. 25.





Is there continuity?

YES -

There is a short in the wires between the interface dial and the navigation unit. Replace the affected shielded harness.�

NO -

Go to step 10.

10. Check for continuity between navigation unit connector B (32P) terminal No. 23 and body ground.





Is there continuity?

YES -

There is a short to body ground in the wire between the interface dial and the navigation unit. Replace the affected shielded harness.�

NO -

Go to step 11.

11. Substitute a known-good interface dial Service and Repair, and recheck.

Is the system OK?

YES -

Replace the original interface dial Service and Repair.�

NO -

Replace the navigation unit Service and Repair.�