Audio-Navigation Unit Button Illumination Does Not Work (With Navigation)
Audio System Symptom Troubleshooting - Audio-Navigation unit button illumination does not work
Audio-Navigation unit button illumination does not work (with navigation)
NOTE:
- Check the vehicle battery condition first 12 Volt Battery Test.
- Check the connectors for poor connections or loose terminals.
1. Turn the ignition switch to ON (II).
2. Turn the combination light switch to the PARKING light position.
3. Check the illumination of the audio-navigation unit buttons.
Are the buttons illuminated?
YES -
Intermittent failure, the audio-navigation unit is OK at this time. Check for loose or poor connections at the audio-navigation unit connector A (24P).
NO -
Go to step 4.
4. Check the illumination of several other buttons not related to the navigation system.
Are the buttons illuminated?
YES -
Go to step 5.
NO -
Troubleshoot the interior lights. Start by checking the No. 29 (10 A) fuse in the under-dash fuse/relay box. If the fuse is OK, check for an open in the wire between the under-dash fuse/relay box and the audio-navigation unit.
5. Turn the ignition switch to LOCK (0).
6. Remove the audio-navigation unit Audio-Navigation Unit Removal/Installation.
7. Disconnect audio-navigation unit connector A (24P).
NOTE: Eject all the discs before removing the audio-navigation unit to prevent damaging the CD player's load mechanism.
8. Disconnect gauge control module 32P connector.
9. Check for continuity between audio-navigation unit connector A (24P) terminal No. 1 and gauge control module 32P connector terminal No. 6.
Is there continuity?
YES -
Go to step 10.
NO -
Repair an open in the wire between the gauge control module and the audio-navigation unit.
10. Turn the ignition switch to ON (II).
11. With the combination light switch still in the PARKING light position, measure the voltage between audio-navigation unit connector A (24P) terminal No. 13 and body ground.
Is there battery voltage?
YES -
Check the connections at audio-navigation unit connector A (24P). If all connections are OK, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.
NO -
Repair an open in the wire between the under-dash fuse/relay box and the audio-navigation unit.