Audio-Navigation And HVAC Switch Panel Button Illumination Does Not Work (With Navigation)

Audio System Symptom Troubleshooting - Audio-navigation and HVAC switch panel button illumination does not work

Audio-navigation and HVAC switch panel button illumination does not work (with navigation)

NOTE:

- Check the vehicle battery condition first Battery Test.
- Check the connectors for poor connections or loose terminals.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

2. Turn the combination lighting switch to the parking light position.

3. Check the illumination of the audio-navigation and HVAC switch panel buttons.

Are the buttons illuminated?

YES -

Intermittent failure, the audio-navigation and HVAC switch panel is OK at this time. Check for loose or poor connections at the audio-navigation and HVAC switch panel.

NO -

Go to step 4.

4. Check the illumination of several other buttons not related to the audio system.

Are the buttons illuminated?

YES -

Go to step 5.

NO -

Troubleshoot the interior lights. Start by checking the No. 6 (7.5 A) fuse in the passenger's under-dash fuse/relay box. If the fuse is OK, check for an open in the wire between passenger's under-dash fuse/relay box and the related system.

5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

6. Disconnect audio-navigation and HVAC switch panel connector A (20P) and gauge control module connector A (32P).

7. Check for continuity between audio-navigation and HVAC switch panel connector A (20P) terminal No. 8 and gauge control module connector A (32P) terminal No. 19.





Is there continuity?

YES -

Go to step 8.

NO -

Repair an open in the wire between the gauge control module and the audio-navigation and HVAC switch panel.

8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

9. With the headlight switch on, measure the voltage between audio-navigation and HVAC switch panel connector A (20P) terminal No. 10 and body ground.





Is there battery voltage?

YES -

Check the connections at the audio-navigation and HVAC switch panel connector A (20P). If all connections are OK, replace the audio-navigation and HVAC switch panel Audio-Navigation and HVAC Switch Panel Removal/Installation.

NO -

Repair an open in the wire between the passenger's under-dash fuse/relay box and the audio-navigation and HVAC switch panel.