Audio System Symptom Troubleshooting - Audio/navigation switch panel button illumination does not work (with navigation system)
Audio/navigation switch panel button illumination does not work (with navigation system)
NOTE:
  • Check the vehicle battery condition first.
  • Check the connectors for poor connections or loose terminals.
  1. Turn the ignition switch to ON (II).
  1. Turn the combination lighting switch to the parking light position.
  1. Check the illumination of the audio/navigation switch panel buttons.
Are the buttons illuminated?
YES -
Intermittent problem: The audio/navigation switch panel is OK at this time. Check for loose or poor connections at audio/navigation switch panel 24P connector.■
NO -
Go to Step 4 .
  1. 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 the passenger's under-dash fuse/relay box and the audio/navigation switch panel.■
  1. Turn the ignition switch to LOCK (0).
  1. Check for continuity between audio/navigation switch panel 24P connector terminals No. 11 and No. 12 and gauge control module 32P connector terminals No. 2 and No. 3.
Is there continuity?
YES -
Go to Step 8 .
NO -
Repair open in the wire between the gauge control module and the audio/navigation switch panel.■
  1. Turn the ignition switch to ON (II).
  1. With the headlight switch still on, measure the voltage between audio/navigation switch panel 24P connector terminal No. 23 and body ground.
Is there battery voltage?
YES -
Check the connections at audio/navigation switch panel 24P connector. If all connections are OK, substitute a known-good audio/navigation switch panel , and recheck. If the symptom/indication goes away, replace the original audio/navigation switch panel. ■
NO -
Repair open in the wire between the passenger's under-dash fuse/relay box and the audio/navigation switch panel.■