AUDIO AND VISUAL SYSTEM, Diagnostic DTC:B15D3

DTC Code DTC Name
B15D3 Stereo Component Amplifier Disconnected

DESCRIPTION

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

When a MOST communication error occurs between the multi-media module receiver assembly and stereo component amplifier assembly, this DTC is will be stored.

DTC Code DTC Detection Condition Trouble Area
B15D3 A device that is listed in the MOST network connected device record of the master unit is missing.

  • Harness or connector

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

  • MOST circuit between television display assembly and stereo component amplifier assembly

  • Stereo component amplifier assembly

  • Multi-media module receiver assembly

  • Television display assembly*

Tech Tips

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

WIRING DIAGRAM

A000Y8NE06

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. 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

      Tech Tips


      • 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.


    B

    CLEAR DTC Click here

    A

  2. 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.


    NEXT

  3. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  4. CHECK FOR DTC


    1. Recheck for DTCs and check if the same DTC is output again Click here.

      OK
      No DTCs are output.

    OK

    END (COMMUNICATION MALFUNCTION DUE TO NOISE)

    NG

  5. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - AUXILIARY BATTERY AND BODY GROUND)


    1. A000Y13E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Stereo Component Amplifier Assembly)

      Disconnect the 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
      R95-3 (GND) - Body ground Always Below 1 Ω
      R95-18 (GND2) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      R95-1 (+B) - R95-3 (GND) Power switch off 11 to 14 V
      R95-16 (+B2) - R95-3 (GND) Power switch off 11 to 14 V
      Result
      Result Proceed to
      OK (w/o Rear Seat Entertainment System) A
      OK (w/ Rear Seat Entertainment System) B
      NG C

    B

    CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - MULTI-MEDIA MODULE RECEIVER ASSEMBLY AND TELEVISION DISPLAY ASSEMBLY) Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

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


    1. Disconnect the L174 multi-media module receiver assembly connector.

    2. Disconnect the R108 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
      L174-2 (MI+) - R108-5 (MO+) Always Below 1 Ω
      L174-3 (MI-) - R108-6 (MO-) Always Below 1 Ω
      L174-4 (SLDI) - R108-7 (SLDO) Always Below 1 Ω
      L174-5 (MO+) - R108-2 (MI+) Always Below 1 Ω
      L174-6 (MO-) - R108-3 (MI-) Always Below 1 Ω
      L174-7 (SLDO) - R108-4 (SLDI) Always Below 1 Ω
      L174-2 (MI+) or R108-5 (MO+) - Body ground Always 10 kΩ or higher
      L174-3 (MI-) or R108-6 (MO-) - Body ground Always 10 kΩ or higher
      L174-4 (SLDI) or R108-7 (SLDO) - Body ground Always 10 kΩ or higher
      L174-5 (MO+) or R108-2 (MI+) - Body ground Always 10 kΩ or higher
      L174-6 (MO-) or R108-3 (MI-) - Body ground Always 10 kΩ or higher
      L174-7 (SLDO) or R108-4 (SLDI) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK STEREO COMPONENT AMPLIFIER ASSEMBLY


    1. Replace the stereo component amplifier assembly with a new or known good one Click here.


    NEXT

  8. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  9. CHECK FOR DTC


    1. Recheck for DTCs and check if the same DTC is output again Click here.

      OK
      No DTCs are output.

    OK

    END (STEREO COMPONENT AMPLIFIER ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

  10. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - MULTI-MEDIA MODULE RECEIVER ASSEMBLY AND TELEVISION DISPLAY ASSEMBLY)


    1. Disconnect the L174 multi-media module receiver assembly connector.

    2. Disconnect the R108 stereo component amplifier assembly connector.

    3. Disconnect the R104*1 or R105*2 television display assembly connector.


      • *1: for Roof

      • *2: for Center Console Side

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

      Standard Resistance
      for Roof
      Tester Connection Condition Specified Condition
      L174-5 (MO+) - R108-2 (MI+) Always Below 1 Ω
      L174-6 (MO-) - R108-3 (MI-) Always Below 1 Ω
      L174-7 (SLDO) - R108-4 (SLDI) Always Below 1 Ω
      R108-5 (MO+) - R104-2 (MI+) Always Below 1 Ω
      R108-6 (MO-) - R104-3 (MI-) Always Below 1 Ω
      R108-7 (SLDO) - R104-4 (SLDI) Always Below 1 Ω
      L174-5 (MO+) or R108-2 (MI+) - Body ground Always 10 kΩ or higher
      L174-6 (MO-) or R108-3 (MI-) - Body ground Always 10 kΩ or higher
      L174-7 (SLDO) or R108-4 (SLDI) - Body ground Always 10 kΩ or higher
      R108-5 (MO+) or R104-2 (MI+) - Body ground Always 10 kΩ or higher
      R108-6 (MO-) or R104-3 (MI-) - Body ground Always 10 kΩ or higher
      R108-7 (SLDO) or R104-4 (SLDI) - Body ground Always 10 kΩ or higher
      for Center Console Side
      Tester Connection Condition Specified Condition
      L174-5 (MO+) - R108-2 (MI+) Always Below 1 Ω
      L174-6 (MO-) - R108-3 (MI-) Always Below 1 Ω
      L174-7 (SLDO) - R108-4 (SLDI) Always Below 1 Ω
      R108-5 (MO+) - R105-2 (MI+) Always Below 1 Ω
      R108-6 (MO-) - R105-3 (MI-) Always Below 1 Ω
      R108-7 (SLDO) - R105-4 (SLDI) Always Below 1 Ω
      L174-5 (MO+) or R108-2 (MI+) - Body ground Always 10 kΩ or higher
      L174-6 (MO-) or R108-3 (MI-) - Body ground Always 10 kΩ or higher
      L174-7 (SLDO) or R108-4 (SLDI) - Body ground Always 10 kΩ or higher
      R108-5 (MO+) or R105-2 (MI+) - Body ground Always 10 kΩ or higher
      R108-6 (MO-) or R105-3 (MI-) - Body ground Always 10 kΩ or higher
      R108-7 (SLDO) or R105-4 (SLDI) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. CHECK STEREO COMPONENT AMPLIFIER ASSEMBLY


    1. Replace the stereo component amplifier assembly with a new or known good one Click here.


    NEXT

  12. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  13. CHECK FOR DTC


    1. Recheck for DTCs and check if the same DTC is output again Click here.

      OK
      No DTCs are output.

    OK

    END (STEREO COMPONENT AMPLIFIER ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here