AUDIO AND VISUAL SYSTEM (w/o Navigation System) Multi-media Interface ECU Communication Error

WIRING DIAGRAM

A0099VHE04

INSPECTION PROCEDURE

PROCEDURE


  1. IDENTIFY COMPONENT SHOWN BY SUB-CODE


    1. Enter diagnostic mode.

      A009BNWE06

    2. Press preset switch "channel 2" to change to "Detailed Information Mode".

    3. Identify the component shown by the sub-code.

      Tech Tips


      • "190 (radio receiver assembly)" is the component shown by the sub-code in the example shown in the illustration.

      • For details of the DTC display, refer to DTC Check/Clear Click here.


    NEXT

  2. CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE


    1. Inspect the power source circuit of the component shown by the sub-code.

      If the power source circuit is operating normally, proceed to the next step.

      Tech Tips

      The satellite radio tuner is built into the radio receiver assembly. If there is a problem between the satellite radio tuner and radio receiver, replace the radio receiver assembly.

      Component Table
      Component Proceed to
      Radio receiver assembly (190)

      Radio Receiver Power Source Circuit Click here

      "Bluetooth" handsfree module (19D)
      Stereo component amplifier assembly (440)*

      Stereo Component Amplifier Power Source Circuit Click here


      • *: for 9 Speakers


    NEXT

  3. 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

  4. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMPONENT SHOWN BY SUB-CODE)

    Tech Tips


    • Start the check from the circuit that is near the component shown by the sub-code first.

    • 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 multi-media interface ECU and component shown by the sub-code.


      1. Disconnect all connectors between the multi-media interface ECU and component shown by the sub-code.

      2. Check for an open or short in the AVC-LAN circuit between the multi-media interface ECU and component shown by the sub-code.

        OK
        There is no open or short circuit.

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE COMPONENT SHOWN BY SUB-CODE


    1. Replace the component shown by the sub-code with a known good one and check if the same problem occurs again.

      OK
      Malfunction disappears.

    NG

    REPLACE MULTI-MEDIA INTERFACE ECU Click here

    OK

    END