Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus RX 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 M3 and radio receiver connector R30.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION REFERENCE TABLE

Tester connection	Condition	Specified condition
GND - VV-	Always	Below 1 Ω
NTSC - VV+	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 & Radio Receiver Connector Terminals

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 R30.

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

Measure the waveform according to the table below.

TESTER CONNECTION SPECIFIED CONDITION REFERENCE TABLE

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

HINT:

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

Reference: Oscilloscope waveform

Fig 3: Identifying Oscilloscope Waveform For NTSC - Body Ground
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Terminal: W+ - 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