Inspection Procedure

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

Disconnect the multi-display connector M3 and radio receiver connector R31.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

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 M3 And R31 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 R31.

Fig 2: Identifying M3 Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the waveform according to the table below.

TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

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

Fig 3: Identifying Waveform

HINT:

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

Reference: Oscilloscope waveform
1. Terminal: VV+ - 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