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AUDIO AND VISUAL SYSTEM(w/ Multi-display) AVC-LAN Circuit

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DTC Code DTC Name
  AVC-LAN Circuit
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DESCRIPTION

Each unit of the audio and visual system connected to the AVC-LAN (communication bus) transfers switch signals using the AVC-LAN.

If a short to +B or short to ground occurs in the AVC-LAN, the audio and visual system will not function normally because communication is not possible.

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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System (Click here).

Tip:

The multi-media module receiver assembly is the master unit.

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PROCEDURE


  1. Click here

    INSPECT MULTI-MEDIA MODULE RECEIVER ASSEMBLY


    1. A0004IIE12

      Remove the multi-media module receiver assembly (Click here).

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      45 (TX3+) - 46 (TX3-) Always 60 to 80 Ω
      Table 1. Text in Illustration
      *a

      Component without harness connected

      (Multi-media Module Receiver Assembly)

  2. Click here

    CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - MULTI-DISPLAY ASSEMBLY)


    1. Disconnect the H97 multi-media module receiver assembly connector.

    2. Disconnect the H93 multi-display assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H97-45 (TX3+) - H93-7 (TX+) Always Below 1 Ω
      H97-46 (TX3-) - H93-19 (TX-) Always Below 1 Ω
      H97-45 (TX3+) - Body ground Always 10 kΩ or higher
      H97-46 (TX3-) - Body ground Always 10 kΩ or higher

    4. Proceed to the next step based on the inspection result.

      Result
      Result Proceed to
      OK (w/ Cooler Control Switch Assembly) A
      OK (w/o Cooler Control Switch Assembly) B
      NG C

  3. Click here

    CHECK HARNESS AND CONNECTOR (COOLER CONTROL SWITCH ASSEMBLY - MULTI-DISPLAY ASSEMBLY)


    1. Disconnect the j2 cooler control switch assembly connector.

    2. Disconnect the H93 multi-display assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      j2-15 (TX+) - H93-6 (TX1+) Always Below 1 Ω
      j2-5 (TX-) - H93-18 (TX1-) Always Below 1 Ω
      j2-15 (TX+) - Body ground Always 10 kΩ or higher
      j2-5 (TX-) - Body ground Always 10 kΩ or higher

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. Click here

    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.

    • OK

      REPLACE MALFUNCTIONING PARTS

    • NG

      REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY (Click here)