AUDIO AND VISUAL SYSTEM (w/o Navigation System) AVC-LAN Circuit

DESCRIPTION

Each unit of the audio system connected to the AVC-LAN (communication bus) transfers the signal of each switch by communication.

When a short to +B or short to ground occurs in this AVC-LAN, the audio system will not function normally as the communication is discontinued.

WIRING DIAGRAM

A0099VHE04

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT RADIO RECEIVER ASSEMBLY


    1. A0097KTE32
      Text in Illustration
      *A for 9 Speakers

      Disconnect the H38* and H36 radio receiver assembly connectors.


      • *: for 9 Speakers

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H38-5 (ATX+) - H38-15 (ATX-)* Always 60 to 80 Ω
      H36-9 (TXM+) - H36-10 (TXM-) Always 60 to 80 Ω

      • *: for 9 Speakers

      Result
      Result Proceed to
      OK A
      NG (w/o Accessory Meter) B
      NG (w/ Accessory Meter) C

    B

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    C

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    A

  2. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMPONENT WHICH HAS STORED THIS CODE)

    Tech Tips

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


    1. Referring to the wiring diagram, check the AVC-LAN circuit between the radio receiver assembly and the component which has stored this code.


      1. Disconnect all connectors between the radio receiver assembly and the component which has stored this code.

      2. Check for an open or short in the AVC-LAN circuit between the radio receiver assembly and the component which has stored this code.

        OK
        There is no open or short circuit.

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here