Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HARNESS AND CONNECTOR (RADIO AND NAVIGATION ASSEMBLY - TELEVISION DISPLAY ASSEMBLY)

Disconnect the radio and navigation assembly connector R27 and television display assembly connector R18.

Measure the resistance according to the value(s) in TESTER CONNECTION SPECIFIED CONDITION .

Standard:

TESTER CONNECTION SPECIFIED CONDITION

Tester connection	Condition	Specified condition
VV+ - NTS1	Always	Below 1
VV- - SG3	Always	Below 1
VV+ - Body ground	Always	10 k or higher
VV- - Body ground	Always	10 k or higher

Fig 1: Disconnecting Radio & Navigation Assembly Connector R27 & Television Display Assembly Connector R18

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: GO TO NEXT STEP.

INSPECT TELEVISION DISPLAY ASSEMBLY

Reconnect the television display assembly connector R18.

Measure the waveform according to TESTER CONNECTION SPECIFIED CONDITION .

OK:

TESTER CONNECTION SPECIFIED CONDITION

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

HINT:

The waveform pattern may differ from that shown in Fig 3 below due to differences in oscilloscope setting. A normal television display assembly operating condition can be determined if any waveform is output,

Fig 2: Identifying Radio & Navigation Connector Assembly

Oscilloscope waveform
1. Terminal: V+ - Body ground Setting: 200 mV/DIV., 10 ms/DIV. Condition: DVD display is ON.
  
  Fig 3: Identifying Oscilloscope Waveform
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE TELEVISION DISPLAY ASSEMBLY

OK: RETURN TO THE ORIGINAL INSPECTION BECAUSE THE CHECK RESULT IS NORMAL