Audio unit button illumination does not work (without navigation)
- Check the vehicle battery condition first (see 12 VOLT BATTERY TEST ).
- Check the connectors for poor connections or loose terminals.
- Turn the ignition switch to ON (II).
- Turn the combination light switch to the parking light position.
- Check the illumination of the audio unit buttons.
Are the buttons illuminated?
YES -Intermittent failure, the audio unit is OK at this time. Check for loose or poor connections at the audio unit connector A (24P).
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. B29 (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 unit.
- Turn the ignition switch to LOCK (0).
- Remove the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION
).NOTE: Eject all the discs before removing the audio unit to prevent damaging the CD player's load mechanism.
- Disconnect audio unit connector A (24P).
- Disconnect the gauge control module 32P connector.
- Check for continuity between audio unit connector A (24P) terminal No. 2 and gauge control module 32P connector terminal No. 16.Fig 1: Checking Continuity Between Audio Unit Connector A (24P) Terminal No. 2 And Gauge Control Module 32P Connector Terminal No. 16
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Go to step 10.
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 combination light switch still on, measure the voltage between audio unit connector A (24P) terminal No. 4 and body ground.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES -Check the connections at audio unit connector A (24P). If all connections are OK, replace the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).
NO -Repair an open in the wire between the under-dash fuse/relay box and the audio unit.