Rear Seat Entertainment System Mute Signal Circuit Between Navigation Receiver Assembly And Television Display Assembly


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK MUTE SIGNAL CIRCUIT

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

CHECK TELEVISION DISPLAY ASSEMBLY

REAR SEAT ENTERTAINMENT SYSTEM - Mute Signal Circuit between Navigation Receiver Assembly and Television Display Assembly


DESCRIPTION

This circuit sends a signal to the television display assembly to mute noise. Because of that, the noise produced by changing the sound source ceases.
If there is an open in the circuit, noise can be heard from the speakers when changing the sound source.
If there is a short in the circuit, even though the television display assembly is normal, no sound, or only an extremely small sound, can be produced.

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Audio Video.Audio And Visual System (For Radio Receiver Type).Rear Seat Entertainment System Mute Signal Circuit Between Navigation Receiver Assembly And Television Display Assembly


INSPECTION PROCEDURE

1.CHECK MUTE SIGNAL CIRCUIT


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Audio Video.Audio And Visual System (For Radio Receiver Type).Rear Seat Entertainment System Mute Signal Circuit Between Navigation Receiver Assembly And Television Display Assembly

  1. Remove the television display assembly connector still connected (LandCruiser RM000002BC8023X.html).

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    W14-6 (MUT1) - Body ground
    		Television display playing
    		Above 3.5 V
    Television display changing modes
    		Below 1 V
    Text in Illustration
    *a
    		Component with harness connected
    (Television Display Assembly)


NG
Go to step 2
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (LandCruiser RM0000033VP01OX.html)

2.CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - TELEVISION DISPLAY ASSEMBLY)

  1. Disconnect the H57 navigation receiver assembly connector.

  1. Disconnect the W14 television display assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H57-8 (MUTE) - W14-6 (MUT1)
    		Always
    		Below 1 Ω
    H57-8 (MUTE) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK TELEVISION DISPLAY ASSEMBLY

  1. Temporarily replace the television display assembly with a new or known good one (LandCruiser RM000002BC8023X.html)

  1. Check that the mute signal circuit functioning normally.

    OK:
    The mute signal circuit functioning normally.


NG
REPLACE NAVIGATION RECEIVER ASSEMBLY (LandCruiser RM000003B6H02GX.html)
OK

END (TELEVISION DISPLAY ASSEMBLY WAS DEFECTIVE)