Navigation System Symptom Troubleshooting - Navigation display does not dim (2013-17)
Navigation display does not dim
NOTE:
- Check the vehicle battery condition first .
- Turn the headlight on, and check that the dash brightness setting is not set to high.
- Check the connectors for poor connections or loose terminals.
- Problem verification:
Press the engine start/stop button to select the ON mode.
- 2. Turn the combination light switch to the parking light position.
Does the navigation display dim?
YES
Intermittent failure, the navigation display unit is OK at this time.
NO
The failure is duplicated, go to step 2.
- Determine possible failure area (interior lights circuit, others):
Check if several other buttons that are not related to the navigation system are illuminated.
Are the buttons illuminated?
YES
Go to step 3.
NO
Troubleshoot the interior lights.
- Open wire check (ILLUMI+ line):
Measure the voltage between test points 1 and 2.
Test condition ON mode Test circuit ILLUMI+ Test point 1 Navigation display unit 36P connector No. 19 (GRY) Test point 2 Body ground Is there battery voltage?
YES
Replace the navigation display unit .
NO
Repair an open in the wire between the No. B35 (7.5 A) fuse in the under-dash fuse/relay box and the navigation display unit.