DVD Image Signal Circuit between Radio Receiver and Multi-display: Procedure

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - DISPLAY AND NAVIGATION MODULE DISPLAY)

Disconnect the radio receiver assembly connector.
Disconnect the display and navigation module display connector.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
J106-8 (NTSC) - J102-9 (VV+)	Always	Below 1 Ω
J106-22 (GND) - J102-20 (VV-)	Always	Below 1 Ω
J106-8 (NTSC) - Body ground	Always	10 kΩ or higher
J106-22 (GND) - Body ground	Always	10 kΩ or higher
J106-7 (SLD) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

INSPECT RADIO RECEIVER ASSEMBLY

Reconnect the radio receiver assembly connector.

Fig 1: Identifying J106 Connector End View
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the waveform according to the table below.

Fig 2: Identifying Waveform Measurements

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OSCILLOSCOPE WAVEFORM

Item	Content
Measurement terminal	J106-8 (NTSC) - Body ground
Measurement setting	200 mV/DIV. 10 μs/DIV.
Condition	DVD display is on

NOTE:

The video waveform changes according to the image output from the radio receiver assembly to the display and navigation module display, but the synchronization signal does not change.

TEXT IN ILLUSTRATION

*a	Component with harness connected (Radio Receiver Assembly)
*b	Synchronization Signal
*c	Video Waveform

NG → See step 3

OK → See step 4

REPLACE RADIO RECEIVER ASSEMBLY. Refer to REMOVAL
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE