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AUDIO AND VISUAL SYSTEM(w/ Multi-display), Diagnostic DTC:B15D3

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DTC Code DTC Name
B15D3 Stereo Component Amplifier Disconnected
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DESCRIPTION

The multi-media module receiver assembly and stereo component amplifier assembly are connected by the MOST communication line.

This DTC is stored when a MOST communication error occurs between the multi-media module receiver assembly and stereo component amplifier assembly.

DTC No. DTC Detection Condition Trouble Area
B15D3 A device that is listed in the MOST network connected device record of the master unit is missing.

  • Stereo component amplifier assembly power source circuit

  • MOST circuit between multi-media module receiver assembly and stereo component amplifier assembly

  • Stereo component amplifier assembly

  • Multi-media module receiver assembly

  • Harness or connector
Tip:

For the MOST network, the multi-media module receiver assembly is the master unit.

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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System (Click here).

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

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PROCEDURE


  1. Click here

    CHECK DTC


    1. If DTC B15C3 is output, perform troubleshooting for DTC B15C3 first.

      Result
      Result Proceed to
      DTC B15C3 is not output. A
      DTC B15C3 is output. B

  2. Click here

    CHECK OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)


    1. Check for optional components.


      1. Check that optional components (including associated wiring) which generate radio waves are not installed.

        Result
        Result Proceed to
        Optional components (including associated wiring) are installed. A
        Optional components (including associated wiring) are not installed. B
        Tip:

        • Electrical noise from radio waves generated by optional components or the wiring for those components may affect MOST communication.

        • This DTC may be stored when a MOST communication error occurs due to electrical noise.


  3. Click here

    REMOVE OPTIONAL COMPONENTS (INCLUDING ASSOCIATED WIRING)


    1. Remove optional components (including associated wiring).

      Note:

      Do not remove optional components or associated wiring without the permission of the customer.


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    CHECK DTC


    1. Clear the DTCs (Click here).

    2. Recheck for DTCs and check that no DTCs are output.

      OK
      No DTCs are output.

  5. Click here

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY POWER SOURCE)


    1. Disconnect the H99 stereo component amplifier assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H99-3 (GND) - Body ground Always Below 1 Ω
      H99-18 (GND2) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H99-1 (+B) - H99-3 (GND) Power switch off 11 to 14 V
      H99-16 (+B2) - H99-3 (GND) Power switch off 11 to 14 V

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. Click here

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - MULTI-MEDIA MODULE RECEIVER ASSEMBLY)


    1. Disconnect the H157 stereo component amplifier assembly connector.

    2. Disconnect the H156 multi-media module receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H157-2 (MI+) - H156-5 (MO+) Always Below 1 Ω
      H157-3 (MI-) - H156-6 (MO-) Always Below 1 Ω
      H157-4 (SLDI) - H156-7 (SLDO) Always Below 1 Ω
      H157-2 (MI+) - Body ground Always 10 kΩ or higher
      H157-3 (MI-) - Body ground Always 10 kΩ or higher
      H157-4 (SLDI) - Body ground Always 10 kΩ or higher

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. Click here

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - MULTI-MEDIA MODULE RECEIVER ASSEMBLY)


    1. Disconnect the H157 stereo component amplifier assembly connector.

    2. Disconnect the H156 multi-media module receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H157-5 (MO+) - H156-2 (MI+) Always Below 1 Ω
      H157-6 (MO-) - H156-3 (MI-) Always Below 1 Ω
      H157-7 (SLDO) - H156-4 (SLDI) Always Below 1 Ω
      H157-5 (MO+) - Body ground Always 10 kΩ or higher
      H157-6 (MO-) - Body ground Always 10 kΩ or higher
      H157-7 (SLDO) - Body ground Always 10 kΩ or higher

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. Click here

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY


    1. Replace the stereo component amplifier assembly (Click here).

    2. Clear the DTCs (Click here).

    3. Recheck for DTCs and check that no DTCs are output.

      OK
      No DTCs are output.

    • OK

      END

    • NG

      REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY (Click here)