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AUDIO AND VISUAL SYSTEM(w/o Parking Assist Monitor System) 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 through 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

Tip:

The radio receiver assembly is the master unit.

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PROCEDURE


  1. Click here

    INSPECT RADIO RECEIVER ASSEMBLY


    1. Remove the radio receiver assembly.

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    2. A01VN6YC08
      *a

      Component without harness connected

      (Radio Receiver Assembly)
      A01VOEMC26
      *a

      Component without harness connected

      (Radio Receiver Assembly)
      A01VN2WC08
      *a

      Component without harness connected

      (Radio Receiver Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O71-18 (TX2+) - O71-19 (TX2-) Always 60 to 80 Ω
      O70-7 (TX1+) - O70-8 (TX1-) Always 60 to 80 Ω
      O72-11 (TX4+) - O72-12 (TX4-) Always 60 to 80 Ω
      Result
      Proceed to
      OK
      NG

  2. Click here

    CHECK HARNESS AND CONNECTOR (AVC-LAN CIRCUIT)


    1. Disconnect the O70, O71 and O72 radio receiver assembly connectors.

    2. Disconnect the T21 stereo component amplifier assembly connector.

    3. Disconnect the O60 multi-display assembly connector.

    4. Disconnect the O76 remote operation controller assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O70-7 (TX1+) - T21-8 (TX+) Always Below 1 Ω
      O70-8 (TX1-) - T21-7 (TX-) Always Below 1 Ω
      O72-11 (TX4+) - O60-7 (TX+) Always Below 1 Ω
      O72-12 (TX4-) - O60-19 (TX-) Always Below 1 Ω
      O71-18 (TX2+) - O76-10 (TX+) Always Below 1 Ω
      O71-19 (TX2-) - O76-11 (TX-) Always Below 1 Ω
      O70-7 (TX1+) - Body ground Always 10 kΩ or higher
      O70-8 (TX1-) - Body ground Always 10 kΩ or higher
      O72-11 (TX4+) - Body ground Always 10 kΩ or higher
      O72-12 (TX4-) - Body ground Always 10 kΩ or higher
      O71-18 (TX2+) - Body ground Always 10 kΩ or higher
      O71-19 (TX2-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. 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.
      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE MALFUNCTIONING PARTS

    • NG

      REPLACE RADIO RECEIVER ASSEMBLYClick here