Display Signal Circuit (Navigation ECU-Multi-Display)

DISPLAY SIGNAL CIRCUIT (NAVIGATION ECU MULTI DISPLAY)

CIRCUIT DESCRIPTION
This is the display signal circuit from the navigation ECU to the multi display.

Wiring Diagram:

Step 1:

Step 2:

INSPECTION PROCEDURE

HINT: The waveform pattern may differ from those shown in the illustrations due to differences in oscilloscope settings. A normal navigation ECU operating condition can be determined if any waveform is output.




Oscilloscope wave
Terminal: SYNC Body ground
Setting: 500 mV/DIV 10 Micro Seconds/DIV
Condition: Navigation display is on.




Oscilloscope wave
Terminal: R, G, B Body ground
Setting: 200 mV/DIV 10 Micro Seconds/DIV
Condition: Navigation display is on.