NAVIGATION SYSTEM (for Radio and Display Type), Diagnostic DTC:B15DA

DTC Code DTC Name
B15DA Rear Console Recognition Disconnected

DESCRIPTION

The stereo component amplifier assembly and rear control switch are connected via AVC-LAN communication lines.

The radio and display receiver assembly is also connected to the stereo component amplifier assembly via AVC-LAN communication lines.

This DTC is stored when an AVC-LAN communication error occurs between the stereo component amplifier assembly and rear control switch.

Tech Tips

If B15DA and B15D3 are output at the same time, troubleshoot for B15D3 first.

DTC No. DTC Detection Condition Trouble Area
B15DA

When either of the following conditions is met:


  • Rear control switch is not connected while the ignition switch is ACC or ON.

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

  • Rear control switch power source circuit

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

  • Rear control switch

  • Stereo component amplifier assembly

  • Radio and display receiver assembly

  • Harness or connector

Tech Tips


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

  • The radio and display receiver assembly is the master unit.

WIRING DIAGRAM

B000NH6E10

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. CHECK DTC


    1. If DTC B15D3 is output, perform troubleshooting for B15D3 first.

      Result
      Result Proceed to
      B15D3 is not output A
      B15D3 is output B

    B

    GO TO DTC B15D3 Click here

    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 (REAR CONTROL SWITCH POWER SOURCE) Click here

    OK

    END

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


    1. Disconnect the X1 rear control switch 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 - REAR CONTROL SWITCH)


    1. Disconnect the I69 stereo component amplifier assembly connector.

    2. Disconnect the X1 rear control switch 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 REAR CONTROL SWITCH


    1. Replace the rear control switch 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 RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

    END