Navigation unit button illumination does not work (with navigation)
- Turn the ignition switch to ON (II).
- Turn the combination lighting switch to the parking light position.
- Check the illumination of the navigation unit buttons.
Are the buttons illuminated?
YES -Intermittent problem: the navigation unit is OK at this time. Check for loose or poor connections at the navigation unit connector A (17P).
NO -Go to step 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. 14 (7.5 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 navigation unit.
- Turn the ignition switch to LOCK (0).
- Disconnect navigation unit connector A (17P).
- Disconnect gauge control module connector A (36P).
- Check for continuity between navigation unit connector A (17P) No. 1 terminal and gauge control module connector A (36P) No. 14 terminal.Fig 1: Checking Continuity Between Navigation Unit Connector A (17P) 1 Terminal And Gauge Control Module Connector A (36P) 14 Terminal
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Go to step 9.
NO -Repair open in the wire between the gauge control module and the navigation unit.
- Turn the ignition switch to ON (II).
- With the headlight switch still on, check for voltage between navigation unit connector A (17P) No. 10 terminal and body ground.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there battery voltage?
YES -Check the connections at navigation unit connector A (17P). If all connections are OK, replace the navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ).
NO -Repair open in the wire between the under-dash fuse/relay box and the navigation unit.