Display Signal Circuit Between Television Display Assembly and Navigation Receiver Assembly

NAVIGATION: NAVIGATION SYSTEM: Display Signal Circuit between Television Display Assembly and Navigation Receiver Assembly

Display Signal Circuit between Television Display Assembly and Navigation Receiver Assembly

DESCRIPTION

This circuit sends a DVD image signal from the television display assembly to the radio and navigation assembly.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

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




(a) Disconnect the radio and navigation assembly connector R27 and television display assembly connector R18.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. INSPECT TELEVISION DISPLAY ASSEMBLY




(a) Reconnect the television display assembly connector R18.
(b) Measure the waveform according to the table below.
OK:





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




(c) Oscilloscope waveform
(1) Terminal: VV+ - Body ground
Setting: 200 mV/DIV., 10 micro s/DIV.
Condition: DVD display is ON.

NG -- REPLACE TELEVISION DISPLAY ASSEMBLY
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE