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Navigation System Symptom Troubleshooting - No picture is displayed

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Diagnostic Test: Self-Diagnosis Mode

NOTE:

- Check the vehicle battery condition first.
- Check the connectors for poor connections or loose terminals.
- Before troubleshooting, make sure you have the anti-theft code for the audio-navigation unit.
- Make sure that the correct navigation DVD color and version are installed.
- Inspect the navigation DVD for dirt or damage.
- Check any official Honda service website for more information about the navigation system.

1. Check the No. B1 (15 A) fuse and No. B14 (7.5 A) fuse in the under-dash fuse/relay box, and reinstall the fuses if they are OK.

Are the fuses OK?

YES -

Go to step 2.

NO -

Replace the fuse(s), and recheck.

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 -

Refer to audio system troubleshooting.

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

5. Check for DTCs.

Are there any DTCs stored?

YES -

Troubleshoot the indicated DTC, 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. 3 and body ground, and between audio-navigation unit connector C (8P) terminal No. 4 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. 24 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. 1 and body ground, and between audio-navigation unit connector C (8P) terminal No. 1 and body ground.









Is there less than 0.2 V in either terminal?

YES -

Substitute a known-good audio-navigation unit Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation.

NO -

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