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

WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: 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

CONNECTOR TERMINAL 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

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 SPECIFIED CONDITION

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

Fig 3: Identifying 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 [mue] s/DIV
  
  Condition: DVD display is ON.

NG: REPLACE MULTI-DISPLAY CONTROLLER

Fig 4: Identifying Oscilloscope Waveform

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