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

DTC Code DTC Name
Multi-media Interface ECU Communication Error

WIRING DIAGRAM

E195968E25

PROCEDURE

  1. IDENTIFY COMPONENT SHOWN BY SUB-CODE

    1. Enter diagnostic mode.

      E146440E29

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

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

      Tip:

      • "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

      Result

      Result

      NEXT
    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.

      Tip:

      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

      Stereo component amplifier assembly (440)

      Stereo Component Amplifier Power Source Circuit

      Click here

      Result

      Result

      NEXT
    NEXT

  3. INSPECT RADIO RECEIVER ASSEMBLY

    1. E145834N06

      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

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

    Tip:

    • 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.

        Result

        Result

        OK

        NG
    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.

      Result

      Result

      OK

      NG
    OK

    END

    NG

    CHECK MULTI-MEDIA INTERFACE ECU

    Click here