Screen Backlight Does Not Dim/Remains Dim

Rear Entertainment System Symptom Troubleshooting - Screen backlight does not dim/remains dim

Screen backlight does not dim/remains dim

NOTE:

- Check the vehicle battery condition first Battery Test.
- Check the dash light brightness control knob dimmer operation. If there is a problem with the dash and gauge control module dimmer, repair it before doing this troubleshooting.

1. Turn the ignition switch to ON (II).

2. Turn the combination light switch ON and OFF, then back ON.

Does the screen backlight dim with the combination light switch in the ON position?

YES -

Operation is normal at this time.

NO -

Go to step 3.

3. Check the backlight settings in the display set up (refer to the Owner's Manual for more information).

Are the display settings set properly?

YES -

Go to step 5.

NO -

Adjust the display settings, and recheck.

4. Check the illumination of several other unit/switches not related to the rear entertainment system.

Are the buttons illuminated?

YES -

Go to step 5.

NO -

- With navigation: 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 underdash fuse/relay box and the audio-navigation unit.
- Without navigation: 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 underdash fuse/relay box and the audio unit.

5. Turn the ignition switch to LOCK (0).

6. Check that the audio-navigation unit or audio unit and the rear controller and screen are properly connected.

Are the connections OK?

YES -

Go to step 7.

NO -

Reconnect the connector, and recheck.

7. Turn the ignition switch to ON (II).

8. With the combination light switch ON, measure the voltage between rear controller and screen 24P connector terminal No. 11 and body ground.





Is there battery voltage?

YES -

Go to step 9.

NO -

Repair an open in the wire between the No. 14 (7.5A) fuse in the under dash fuse box and the rear controller and screen.

9. Check for continuity between rear controller and screen 24P connector terminal No. 23 and gauge control module 32P connector terminal No. 2.





Is there continuity?

YES -

Replace the rear controller and screen Service and Repair.

NO -

Repair an open in the wire between the rear controller and screen and the gauge control module.