AUDIO AND VISUAL SYSTEM(for Radio and Display Type), Diagnostic DTC:B15D3

DTC Code DTC Name
B15D3 Stereo Component Amplifier Disconnected

DESCRIPTION

The radio and display receiver assembly and stereo component amplifier assembly are connected by the AVC-LAN communication line.

This DTC is stored when an AVC-LAN communication error occurs between the radio and display receiver assembly and stereo component amplifier assembly.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B15D3

Stereo Component Amplifier Disconnected

When either condition below is met:

  • Stereo component amplifier assembly is/was not connected while the ignition switch is/was ON or ACC.

  • Communication between the master unit and the stereo component amplifier assembly is not possible when the engine is started.

  • Stereo component amplifier assembly

  • Radio and display receiver assembly

  • Harness or connector
Tip:

The radio and display receiver assembly is the master unit.

WIRING DIAGRAM

E263055E04

CAUTION / NOTICE / HINT

Note:

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

PROCEDURE

  1. CHECK FOR DTC

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

      Click hereClick here

      Body Electrical > Navigation System > Trouble Codes

      OK

      DTC B15C3 is not output.

    Result

    Proceed to

    OK

    NG
    NG

    GO TO DTC "B15C3"

    Click hereClick here

    OK

  2. 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 AVC-LAN communication.

      • This DTC may be stored when an AVC-LAN communication error occurs due to electrical noise.

    B

    CHECK FOR DTCClick here

    A

  3. 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.

    Result

    Proceed to

    NEXT
    NEXT

  4. CHECK FOR DTC

    1. Clear the DTCs.

      Click hereClick here

      Body Electrical > Navigation System > Clear DTCs

    2. Check for DTCs.

      Click hereClick here

      Body Electrical > Navigation System > Trouble Codes

      OK

      No DTCs are output.

    Result

    Proceed to

    OK

    NG
    OK

    END (OPTIONAL COMPONENTS [INCLUDING ASSOCIATED WIRING] IS DEFECTIVE)

    NG

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

    1. E271825C02

      *a

      Front view of wire harness connector

      (to Stereo Component Amplifier Assembly)

      Disconnect the stereo component amplifier assembly connectors.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      M33-3 (GND) - 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

      M33-1 (+B) - Body ground

      Always

      11 to 14 V

      M32-12 (ACC) - Body ground

      Ignition switch ACC

      11 to 14 V

      Ignition switch off

      Below 1 V

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY)

    1. Disconnect the G143 radio and display receiver assembly connector.

    2. Disconnect the M32 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

      G143-7 (TX1+) - M32-8 (TX+)

      Always

      Below 1 Ω

      G143-8 (TX1-) - M32-7 (TX-)

      Always

      Below 1 Ω

      G143-7 (TX1+) - Body ground

      Always

      10 kΩ or higher

      G143-8 (TX1-) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK STEREO COMPONENT AMPLIFIER ASSEMBLY

    1. Replace the stereo component amplifier assembly.

      Click hereClick here

    2. Clear the DTCs.

      Click hereClick here

      Body Electrical > Navigation System > Clear DTCs

    3. Check for DTCs.

      Click hereClick here

      Body Electrical > Navigation System > Trouble Codes

      OK

      No DTCs are output.

    Result

    Proceed to

    OK

    NG
    OK

    END (STEREO COMPONENT AMPLIFIER ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

    Click hereClick here