NAVIGATION SYSTEM(for DVD) AVC-LAN Circuit

DTC Code DTC Name
AVC-LAN Circuit

DESCRIPTION

Each unit of the navigation system connected to the AVC-LAN (communication bus) transfers switch signals by the audio visual communication local area network.

If a short to +B or short to ground occurs in the AVC-LAN, the navigation system does not function normally as communication stops.

WIRING DIAGRAM

E250972E01

CAUTION / NOTICE / HINT

Note:

The display and navigation module display is the master unit.

PROCEDURE

  1. INSPECT DISPLAY AND NAVIGATION MODULE DISPLAY

    1. E201096C04

      *A

      w/ Side Monitor System

      Remove the display and navigation module display.

      Click hereClick here

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      1 (TX1+) - 2 (TX1-)*

      Always

      60 to 80 Ω

      9 (TXM+) - 10 (TXM-)

      Always

      60 to 80 Ω

      • *: w/ Side Monitor System

      Result

      Result

      OK

      NG
    NG

    REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY

    Click hereClick here

    OK

  2. CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY - WHICH HAS STEREO THIS CODE)

    Tip:

    For details of the connectors, refer to Terminals of ECU.

    Click here

    1. Referring to the AVC-LAN wiring diagram above, check all AVC-LAN circuits.

      1. Disconnect all connectors in all AVC-LAN circuits.

      2. Check for an open or short in all AVC-LAN circuits.

        OK

        There is no open or short circuit.

        Result

        Result

        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.

      • If disconnecting a slave unit causes the master unit to return to normal operation, the slave unit is defective and should be replaced.

      OK

      Master unit returns to normal operation.

      Result

      Result

      OK

      NG
    OK

    REPLACE MALFUNCTIONING PARTS

    NG

    REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY

    Click hereClick here