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 Battery Test.
- Check the connectors for poor connections or loose terminals.
- Check for and resolve all CAN DTCs before troubleshooting the navigation system.
- Check any official Honda service website for more service information about the navigation system.
- Before troubleshooting, make sure you have anti-theft codes for the audio-navigation unit.
- After troubleshooting, enter the anti-theft codes for the audio-navigation unit.

1. Start the vehicle.

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

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 less than 0.2 V?

YES -

Go to step 5.

NO -

Repair an open or high resistance in the wire between interface dial 5P connector terminal No. 3 and body ground (G506).�

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

6. Disconnect audio-navigation unit connector C (28P).

7. Disconnect the interface dial 5P connector.

8. Check for continuity between audio-navigation unit connector C (28P) terminal No. 26 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 audio-navigation unit. Replace the affected shielded harness.�

9. Check for continuity between audio-navigation unit connector C (28P) terminals No. 13 and No. 26.





Is there continuity?

YES -

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

NO -

Go to step 10.

10. 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 audio-navigation unit Audio-Navigation Unit Removal/Installation.�