NAVIGATION SYSTEM, Diagnostic DTC:B15DA

DTC Code DTC Name
B15DA Rear Console Recognition Disconnected

DESCRIPTION

The stereo component amplifier assembly and cooler control switch assembly are connected by the AVC-LAN communication line.

The navigation ECU sub-assembly is also connected to the stereo component amplifier assembly by the AVC-LAN communication line.

When an AVC-LAN communication error occurs between the stereo component amplifier assembly and cooler control switch assembly, this DTC will be stored.

Tech Tips

If B15DA and B15D3 are output, troubleshoot for B15D3 first.

DTC No. DTC Detection Condition Trouble Area
B15DA*1

When either condition below is met:


  • Cooler control switch assembly is/was not connected while the ignition switch is/was ON or ACC.

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

  • Cooler control switch assembly power source circuit

  • AVC-LAN circuit between navigation ECU sub-assembly and cooler control switch assembly

  • Cooler control switch assembly

  • Stereo component amplifier assembly

  • Navigation ECU sub-assembly

  • Harness or connector

Tech Tips


  • *1: Even if no fault is present, this DTC may be stored depending on the battery condition or engine start voltage.

  • The navigation ECU sub-assembly is the master unit.

WIRING DIAGRAM

A01EWXUE01

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. CHECK DTC


    1. Clear the DTCs Click here.

    2. Recheck for DTCs and check if the same DTC is output again.

      Result
      Result Proceed to
      B15DA is output. A
      B15DA and B15D3 are output. B
      No DTCs are output. C

      Tech Tips

      If B15DA and B15D3 are output, troubleshoot for B15D3 first.


    B

    GO TO DTC "B15D3" IN DIAGNOSTIC TROUBLE CODE CHART Click here

    C

    END

    A

  2. 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

      Tech Tips


      • 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 DTC Click 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.


    NEXT

  4. CHECK DTC


    1. Clear the DTCs Click here.

    2. Recheck for DTCs and check if the same DTC is output again.

      OK
      No DTCs are output.

    NG

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

    OK

    END

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


    1. Disconnect the 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
      X1-16 (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
      X1-1 (+B) - X1-16 (GND) Always 11 to 14 V
      X1-7 (IG+) - X1-16 (GND) Ignition switch ON 11 to 14 V
      X1-6 (ACC) - X1-16 (GND) Ignition switch ACC 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - COOLER CONTROL SWITCH ASSEMBLY)


    1. Disconnect the stereo component amplifier assembly connector.

    2. Disconnect the cooler control switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I69-20 (TXD+) - X1-15 (TX+) Always Below 1 Ω
      I69-19 (TXD-) - X1-5 (TX-) Always Below 1 Ω
      I69-20 (TXD+) - Body ground Always 10 kΩ or higher
      I69-19 (TXD-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. REPLACE COOLER CONTROL SWITCH ASSEMBLY


    1. Replace the cooler control switch assembly Click here.

    2. Clear the DTCs Click here.

    3. Recheck for DTCs and check if the same DTC is output again.

      OK
      No DTCs are output.

    NG

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY Click here

    OK

    END

  8. 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 if the same DTC is output again.

      OK
      No DTCs are output.

    NG

    REPLACE NAVIGATION ECU SUB-ASSEMBLY Click here

    OK

    END