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AUDIO AND VISUAL SYSTEM, Diagnostic DTC:B15DA

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DTC Code DTC Name
B15DA Rear Console Recognition Disconnected
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DESCRIPTION

The cooler control switch assembly is connected via AVC-LAN communication line.

This DTC is stored when an AVC-LAN communication error occurs between the radio and display receiver assembly and cooler control switch assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area
B15DA Rear Console Recognition Disconnected

When either of the following conditions is met:


  • The cooler control switch assembly is/was not connected while the ignition switch is/was ACC or IG

  • Communication between the master unit and the cooler control switch assembly is not possible when the engine is started.

  • Cooler control switch assembly power source circuit

  • AVC-LAN circuit between radio and display receiver assembly and cooler control switch assembly

  • Cooler control switch assembly

  • Radio and display receiver assembly

  • Harness or connector
Tip:

The radio and display 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.

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  • When replacing the radio and display receiver assembly, always replace it with a new one. If a radio and display receiver assembly which was installed to another vehicle is used, the following may occur:


    • A communication malfunction DTC may be stored.

    • The radio and display receiver assembly may not operate normally.


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

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PROCEDURE


  1. 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 AVC-LAN communication.

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


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    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

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    CHECK DTC


    1. Clear the DTCs.


      1. Body Electrical > Navigation System > Clear DTCs


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


      1. Body Electrical > Navigation System > Trouble Codes


      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

  4. Click here

    CHECK HARNESS AND CONNECTOR (COOLER CONTROL SWITCH ASSEMBLY POWER SOURCE)


    1. Disconnect the Z1 cooler control switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Z1-16 (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
      Z1-9 (+B) - Z1-16 (GND) Always 11 to 14 V
      Z1-10 (IG+) - Z1-16 (GND) Ignition switch ON 11 to 14 V
      Z1-1 (ACC) - Z1-16 (GND) Ignition switch ACC 11 to 14 V
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

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    CHECK HARNESS AND CONNECTOR (COOLER CONTROL SWITCH ASSEMBLY - RADIO AND DISPLAY RECEIVER ASSEMBLY)


    1. Disconnect the Z1 cooler control switch assembly connector.

    2. Disconnect the K3 radio and display receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Z1-7 (TX+) - K3-5 (TX1+) Always Below 1 Ω
      Z1-8 (TX-) - K3-6 (TX1-) Always Below 1 Ω
      Z1-7 (TX+) or K3-5 (TX1+) - Body ground Always 10 kΩ or higher
      Z1-8 (TX-) or K3-6 (TX1-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

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    REPLACE COOLER CONTROL SWITCH ASSEMBLY


    1. Replace the cooler control switch assembly with a new or known good one.

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    2. Clear the DTCs.


      1. Body Electrical > Navigation System > Clear DTCs


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


      1. Body Electrical > Navigation System > Trouble Codes


      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    • OK

      END

    • NG

      REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLYClick here