Audio unit button illumination does not work
WARNING: This page is about a different car, the 2006 Honda Odyssey and 2005 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
- Turn the ignition switch to ON (II).
- Turn the combination lighting switch to the parking light position.
- Check the illumination of the audio unit buttons.
Are the buttons illuminated?
- YES - Intermittent problem: the audio unit is OK at this time. Check for loose or poor connections at audio unit connector A (20P).
- NO - Go to step 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. 7 (7.5 A) fuse in the passenger's under-dash fuse/relay box. If the fuse is OK, check for open in the wire between the passenger's under-dash fuse/relay box and the audio unit.
- Turn the ignition switch to LOCK (0).
- Disconnect audio unit connector A (20P).
- Disconnect gauge control module connector A (30P).
- Check for continuity between audio unit connector A (20P) No. 19 terminal and gauge control module connector A (30P) No. 9 terminal.Fig 1: Checking Continuity Between Audio Unit Connector A (20P) No. 19 Terminal And Gauge Control Module Connector A (30P) No. 9
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
- YES - Go to step 9.
- NO - Repair an open in the wire between the gauge control module and the audio unit.
- Turn the ignition switch to ON (II).
- With the headlight switch still on, check for voltage between audio unit connector A (20P) No. 9 terminal and body ground.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
- YES - Check the connections at the audio unit connector A (20P). If all connections are OK, replace the audio unit.
- NO - Repair an open in the wire between the passenger's under-dash fuse/relay box and the audio unit.