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Home >> Lexus >> 2008 >> GX 470 V8-4.7L (2UZ-FE) >> Repair and Diagnosis >> Accessories and Optional Equipment >> Navigation System >> Testing and Inspection >> Component Tests and General Diagnostics >> Display Signal Circuit between Disc Player Changer and Multi-Display
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Display Signal Circuit between Disc Player Changer and Multi-Display








NAVIGATION SYSTEM: Display Signal Circuit between Disc Player Changer and Multi-Display

Display Signal Circuit between Disc Player Changer and Multi-Display

DESCRIPTION

This circuit sends a DVD image signal from the radio receiver to the multi-display.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK REAR SEAT ENTERTAINMENT SYSTEM
(a) Check if the vehicle is equipped with the rear seat entertainment system.

Result:





NG -- CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - DISC PLAYER CHANGER)
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (DISC PLAYER CHANGER - TELEVISION DISPLAY)





(a) Disconnect the D24 changer connector.
(b) Disconnect the R27 display connector.
(c) 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.
3. INSPECT TELEVISION DISPLAY





(a) Reconnect the R27 display connector.





(b) Check the waveform of the television display using an oscilloscope.
OK:
Waveform is as shown in the illustration.






NG -- REPLACE TELEVISION DISPLAY
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - DISC PLAYER CHANGER)





(a) Disconnect the M22 display connector.
(b) Disconnect the D24 changer connector.
(c) 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.
5. INSPECT DISC PLAYER CHANGER





(a) Reconnect the D24 changer connector.





(b) Check the waveform of the disc player changer using an oscilloscope.
OK:
Waveform is as shown in the illustration.






NG -- REPLACE DISC PLAYER CHANGER
OK -- PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE
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