Symptom Troubleshooting

Navigation System Symptom Troubleshooting - No picture is displayed

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NOTE:

- Check the vehicle battery condition first 12 Volt Battery Test.
- Check any official Honda service website for more information about the navigation system.
- Check the connectors for poor connections or loose terminals.

1. Check the No. 1 (15 A) fuse and the No. 14 (7.5 A) fuse in the under-dash fuse/relay box, and reinstall the fuse if they are OK.

Are the fuses OK?

YES -

Go to step 2.

NO -

Replace the fuse(s), and recheck. If the fuse(s) blows again, check for a short in the No. 1 (15 A) fuse and/or the No. 14 (7.5 A) fuse circuits.

2. Turn the ignition switch to ON (II).

3. Operate the radio and listen to the audio.

Can you hear the audio?

YES -

Go to step 4.

NO -

Do the audio system troubleshooting.

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

5. Check for DTCs.

Are there any DTCs indicated?

YES -

Repair the indicated DTCs, and recheck. If the symptom does not go away, go to step 6.

NO -

Go to step 6.

6. Measure the voltage between audio-navigation unit connector A (24P) terminal No. 24 and body ground, and between audio-navigation unit connector D (20P) terminal No. 1 and body ground.









Is there battery voltage in either terminal?

YES -

Go to step 7.

NO -

Repair an open in the wire(s) between the under-dash fuse/relay box and the audio-navigation unit.

7. Turn the ignition switch to ON (II).

8. Measure the voltage between audio-navigation unit connector A (24P) terminal No. 14 and body ground.





Is there battery voltage?

YES -

Go to step 9.

NO -

Repair an open in the wire between the under-dash fuse/relay box and the audio-navigation unit.

9. Measure the voltage between audio-navigation unit connector A (24P) terminal No. 12 and body ground, and between audio-navigation unit connector D (20P) terminal No. 11 and body ground.









Is there less than 0.2 V in either terminal?

YES -

Replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.

NO -

Repair an open or high resistance in the wire(s) between the audio-navigation unit and body ground (G503).