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

DTC Code DTC Name
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

E195968E22

PROCEDURE

  1. INSPECT RADIO RECEIVER ASSEMBLY

    1. E145834N04

      Disconnect the H29 and H28 radio receiver assembly connectors.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H29-5 (ATX+) - H29-15 (ATX-)

      Always

      60 to 80 Ω

      H28-9 (TXM+) - H28-10 (TXM-)

      Always

      60 to 80 Ω

      Result

      Result

      OK

      NG
    NG

    REPLACE RADIO RECEIVER ASSEMBLY

    Click here

    OK

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

    Tip:

    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.

        Result

        Result

        OK

        NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR