Symptom Troubleshooting

Navigation System Symptom Troubleshooting - Interface dial buttons do not work

Interface dial buttons do not work

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- Check the connectors for poor connections or loose terminals.
- Make sure that the correct navigation DVD color and version are installed. The wrong navigation DVD or software version can cause a hardware malfunction.
- Inspect the navigation DVD for dirt or damage.
- Check any official Honda service web site for more service information about the navigation system.
- Before troubleshooting, make sure you have anti-theft codes 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. Go into the Detail Information & Settings select Unit Check, and use Hard Key test under Unit Check Navigation System Diagnostic Mode.

Do the interface dial buttons work properly?

YES -

The system is OK at this time.�

NO -

Go to step 3.

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





Is there battery voltage?

YES -

Go to step 4.

NO -

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

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





Is there 0.2 V or less?

YES -

Go to step 5.

NO -

Repair an open or high resistance in the wire between the interface dial and body ground (G502) Harness Locations.�

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

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

7. 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 8.

NO -

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

8. 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. Replace the affected shielded harness.

NO -

Go to step 9.

9. 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.�