AUDIO AND VISUAL SYSTEM (for Radio and Display Type), Diagnostic DTC:B15DA

DTC Code DTC Name
B15DA Rear Console Recognition Disconnected

DESCRIPTION

The radio and display receiver assembly and cooler control switch assembly are connected via AVC-LAN communication lines.

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

DTC No. DTC Detection Condition Trouble Area
B15DA

When either of the following conditions is met:


  • The cooler control switch assembly was not connected while the ignition switch was ON or ACC.

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

Tech Tips

The radio and display receiver assembly is the master unit.

WIRING DIAGRAM

B000HWME06

INSPECTION PROCEDURE

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 AVC-LAN communication.

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


    B

    CHECK 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. 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

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


    1. Disconnect the X1 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

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


    1. Disconnect the I155 radio and display receiver assembly connector.

    2. Disconnect the X1 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
      I155-7 (TX1+) - X1-15 (TX+) Always Below 1 Ω
      I155-8 (TX1-) - X1-5 (TX-) Always Below 1 Ω
      I155-7 (TX1+) - Body ground Always 10 kΩ or higher
      I155-8 (TX1-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. 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 RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

    END