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 Testing and Inspection.
- Check the connector for poor connections or loose terminals.

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

2. Turn the combination light switch ON and OFF.

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.

Are the display settings set properly?

YES -

Go to step 4.

NO -

Adjust the display settings and recheck the function.�

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

5. Check that the rear controller and screen and audio unit are properly connected.

Are the connections OK?

YES -

Go to step 6.

NO -

Reconnect the connector, and recheck the function.�

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

7. Measure the voltage between rear controller and screen 26P connector terminal No. 12 and body ground. Operate the combination light switch on and off to see if the voltage changes.





Is there battery voltage with the combination light switch ON?

YES -

Go to step 9.

NO -

Go to step 8.

8. Check the No. 7 (7.5 A) fuse in the passenger's under-dash fuse/relay box.

Is the fuse OK?

YES -

Repair an open in the wire(s) between the No. 7 (7.5 A) fuse in the passenger's under-dash fuse/relay box and the rear controller and screen.�

NO -

Replace the fuse, and recheck.�

9. While the combination light switch off, measure the voltage between the rear controller and screen 26P connector terminal No. 26 and body ground.





Is there less than 0.2 V?

YES -

Repair an open or high resistance in the wire between rear controller and screen 26P connector terminal No. 26 and body ground (G504).�

NO -

Replace the rear controller and screen Service and Repair.�