NAVIGATION SYSTEM AVC-LAN Circuit

DTC Code DTC Name
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

E248832E01

PROCEDURE

  1. INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY

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

      Click here

    2. E238990N18

      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

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY

    Click here

    OK

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

    • *: w/ Side Monitor System

    1. Disconnect the H45 multi-media module receiver assembly connector.

    2. Disconnect the H49 multi-display assembly connector.

    3. Disconnect the I5 parking assist ECU connector.*

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H45-45 (TX3+) - H49-7 (TX+)

      Always

      Below 1 Ω

      H45-46 (TX3-) - H49-19 (TX-)

      Always

      Below 1 Ω

      H45-7 (TX1+) - I5-11 (TX+)*

      Always

      Below 1 Ω

      H45-8 (TX1-) - I5-10 (TX-)*

      Always

      Below 1 Ω

      H45-45 (TX3+) - Body ground

      Always

      10 kΩ or higher

      H45-46 (TX3-) - Body ground

      Always

      10 kΩ or higher

      H45-7 (TX1+) - Body ground*

      Always

      10 kΩ or higher

      H45-8 (TX1-) - Body ground*

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    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.

      Tip:

      • Check all slave units.

      • 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.

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE MALFUNCTIONING PARTS

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY

    Click here