Display Does Not Dim When Light Control Switch is Turned On

NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM (for DVD): Display does not Dim when Light Control Switch is Turned ON
- Display does not Dim when Light Control Switch is Turned ON

DESCRIPTION

When the navigation system is activated with the light control switch in the tail or head position, before AVC-LAN communication is established, the multi-display assembly dims the display according to the illumination signal received via a direct line.

After AVC-LAN communication is established, the multi-display assembly dims the display according to a dimmer signal sent via AVC-LAN communication.

The display and navigation module display switches between the daytime screen and night screen on the multi-display according to the illumination signal input.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CONFIRM SYMPTOMS

(a) Check the symptoms that occur by viewing the display.

Result:

HINT
* When the navigation system is activated with the light control switch in the tail or head position, before AVC-LAN communication is established, the multi-display assembly dims the display according to the illumination signal received via a direct line.
* After AVC-LAN communication is established, the multi-display assembly dims the display according to a dimmer signal sent via AVC-LAN communication.
* The display and navigation module display switches between the daytime screen and night screen on the multi-display according to the illumination signal input.

B -- CHECK IMAGE QUALITY SETTING

C -- GO TO LIGHTING SYSTEM How To Proceed With Troubleshooting
A -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (BATTERY - MULTI-DISPLAY ASSEMBLY)

(a) Disconnect the multi-display assembly connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table

3. CHECK IMAGE QUALITY SETTING

(a) Press the "DISP" switch on the remote touch.

(b) Turn the light control switch to the tail position.

(c) Check if "Day Mode" on the display adjustment is on.

OK:

"Day Mode" is on.

NG -- CHECK VEHICLE SIGNAL (OPERATION CHECK)

OK -- TURN "Day Mode" SETTING OFF

4. CHECK VEHICLE SIGNAL (OPERATION CHECK)

(a) Display the "Vehicle Signal Check Mode" screen Operation Check.

(b) Check that the display changes between ON and OFF according to the light control switch operation.

OK:

HINT
The display is updated once per second. It is normal for the display to lag behind the actual switch operation.

NG -- CHECK HARNESS AND CONNECTOR (BATTERY - DISPLAY AND NAVIGATION MODULE DISPLAY)

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table

5. CHECK HARNESS AND CONNECTOR (BATTERY - DISPLAY AND NAVIGATION MODULE DISPLAY)

(a) Disconnect the display and navigation module display connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table