Navigation System Avc-Lan Circuit

Audio Visual Telematics. Land Cruiser. Urj200, 202 Grj200 Vdj200
Navigation Multi Info Display. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY

CHECK HARNESS AND CONNECTOR (AVC-LAN CIRCUIT)

INSPECT MALFUNCTIONING PARTS

NAVIGATION SYSTEM - AVC-LAN Circuit


DESCRIPTION

Each audio system component connected to the AVC-LAN (communication bus) transfers switch signals using the audio visual communication local area network.
If a short to +B or short to ground occurs in the AVC-LAN, the audio system will not function normally because communication is not possible.

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Navigation Multi Info Display.Navigation System.Navigation System Avc-Lan Circuit


INSPECTION PROCEDURE

NOTICE:
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System (Click here).
1.INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Navigation Multi Info Display.Navigation System.Navigation System Avc-Lan Circuit

  1. Remove the multi-media module receiver assembly with the connector(s) still connected (Click here).

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    7 (TX1+) - 8 (TX1-)
    		Always
    		60 to 80 Ω
    45 (TX3+) - 46 (TX3-)
    		Always
    		60 to 80 Ω


NG
REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY (Click here)
OK


2.CHECK HARNESS AND CONNECTOR (AVC-LAN CIRCUIT)

  1. Disconnect the F77 multi-media module receiver assembly connector.

  1. Disconnect the F79 multi-display assembly connector.

  1. Disconnect the F75 parking assist ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    F77-45 (TX3+) - F79-7 (TX+)
    		Always
    		Below 1 Ω
    F77-46 (TX3-) - F79-19 (TX-)
    		Always
    		Below 1 Ω
    F77-7 (TX1+) - F75-11 (TX+)
    		Always
    		Below 1 Ω
    F77-8 (TX1-) - F75-10 (TX- )
    		Always
    		Below 1 Ω
    F77-45 (TX3+) - Body ground
    		Always
    		10 kΩ or higher
    F77-46 (TX3-) - Body ground
    		Always
    		10 kΩ or higher
    F77-7 (TX1+) - Body ground
    		Always
    		10 kΩ or higher
    F77-8 (TX1-) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.INSPECT MALFUNCTIONING PARTS

  1. Disconnect and reconnect each slave unit one by one until the master unit returns to normal operation.

    HINT:
    1. Check all slave units.
    2. When disconnecting a slave unit causes the master unit to return to normal operation, this indicates that the slave unit is malfunctioning. Replace the malfunctioning slave unit.
    OK:
    Master unit returns to normal operation.


NG
REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY (Click here)
OK

REPLACE MALFUNCTIONING PARTS