Inspection Procedure

WARNING: This page is about a different car, the 2007 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - MULTI-DISPLAY)

Disconnect the multi-display connector E64 and radio receiver E72 connector.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
GND - SGD1	Always	Below 1 Ω
NTSC - NTSC	Always	Below 1 Ω
SLD - SGND	Always	Below 1 Ω
NTSC - Body ground	Always	10 kΩ or higher
GND - Body ground	Always	10 kΩ or higher

Fig 1: Identifying Multi-Display Connector E64 And Radio Receiver E72 Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

INSPECT RADIO RECEIVER (OUTPUT SIGNAL)

Reconnect the radio receiver connector E72.

Fig 2: Identifying Radio Receiver Connector E72
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the waveform according to the table below.

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
NTSC - Body ground	DVD display is ON	A waveform synchronized with display signals is output

HINT:

The waveform pattern may differ from that shown in the illustration below due to differences in oscilloscope settings. A normal radio receiver operating condition can be determined if any waveform is output.

Fig 3: Identifying Signal Waveform

Oscilloscope wave

Terminal: NTSC - Body ground

Setting: 200 mV/DIV. 10 μs/DIV.

Condition: DVD display is on.

NG: REPLACE RADIO RECEIVER

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE