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NAVIGATION SYSTEM, 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 via MOST communication.

This DTC is stored when an 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:

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

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

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PROCEDURE


  1. Click here

    CHECK DTC


    1. If DTC B15C3 is output, perform the 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 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 an 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.


  4. Click here

    CHECK DTC


    1. Clear the DTCs (Click here).

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

      OK
      No DTCs are output.

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    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 (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY)


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

    2. Disconnect the H157 stereo component amplifier assembly connector.

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

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

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. Click here

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY


    1. Replace the stereo component amplifier assembly with a new or known good one (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)