Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION ASSEMBLY [MULTI-DISPLAY] - RADIO RECEIVER)

Disconnect the L61 display connector
Disconnect the L56 receiver 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
L61-4 (W-) - L56-2 (GND)	Always	Below 1 Ω
L61-1 (W+) - L56-1 (NTSC)	Always	Below 1 Ω
L61-4 (W-) - Body ground	Always	10 kΩ or higher
L61-1 (W+) - Body ground
L56-3 (SLD) - Body ground

Fig 1: Identifying L61 And L56 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

CHECK RADIO RECEIVER

Reconnect the L56 receiver connector

Check the waveform of the radio receiver using an oscilloscope

Measurement condition

DISPLAY CONTENTS

Item	Content
Terminal No (Symbols)	NTSC (L56-1) - Body ground
Tool Setting	0 2V/DIV, 10 μsec/DIV
Condition	DVD is played on radio receiver

OK: Waveform is as shown in the illustration.

Fig 2: Identifying L56 Receiver Connector With Waveform

NG: REPLACE RADIO RECEIVER ASSEMBLY (See REMOVAL )

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