Display Signal Circuit between Multi-display and Multi-display Controller: Wiring Diagram

Fig 1: Display Signal Circuit Between Multi-Display And Multi-Display Controller - Wiring Diagram

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY CONTROLLER - MULTI-DISPLAY)

Disconnect the multi-display connector M3 and multi-display controller connector R15.
Measure the resistance according to the value(s) in the table below.

Resistance

TERMINALS RESISTANCE SPECIFICATION

Tester connection	Condition	Specified Condition
V- - SGN1	Always	Below 1 Ω
V+ - NTS1	Always	Below 1 Ω
SLD - SG3	Always	Below 1 Ω
NTS1 - Body ground	Always	10 kΩ or higher
SGN1 - Body ground	Always	10 kΩ or higher
SG3 - Body ground	Always	10 kΩ or higher

Fig 2: Disconnecting Multi-Display Connector M3 And Multi-Display Controller Connector R15

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step.

INSPECT MULTI-DISPLAY CONTROLLER (OUTPUT SIGNAL)

Reconnect the multi-display controller connector R15.

Measure the waveform according to the table below.

TESTER CONNECTION AND SPECIFIED CONDITION

Tester connection	Condition	Specified Condition
V+ - Body ground	DVD display is ON	A waveform synchronized with display signals is output

Fig 3: Disconnecting Multi-Display Connector M3

HINT:

The waveform pattern may differ from that shown in the illustration below due to differences in oscilloscope setting. A normal multi-display controller operating condition can be determined if any waveform is output.

Oscilloscope waveform
1. Terminal: V+ - Body ground
  Setting: 500 mV/DIV 10 s/DIV
  
  Condition: DVD display is ON.

Fig 4: Oscilloscope Waveform Graph

NG: REPLACE MULTI-DISPLAY CONTROLLER

OK: RETURN TO THE ORIGINAL INSPECTION FLOW BECAUSE THE CHECK RESULT IS NORMAL