NAVIGATION SYSTEM(for Navigation Receiver Type), Diagnostic DTC:B15F8

DTC Code DTC Name
B15F8 D-Seat ECU Vehicle Information Reading/Writing Process Malfunction

DESCRIPTION

This DTC is stored when items controlled by the main body ECU (multiplex network body ECU) cannot be customized via the navigation system vehicle customization screen.

Tech Tips

The main body ECU (multiplex network body ECU) controls the front power seat control system related items that are customizable via the navigation system vehicle customization screen.

DTC No. Detection Item DTC Detection Condition Trouble Area
B15F8 D-Seat ECU Vehicle Information Reading/Writing Process Malfunction Main body ECU (multiplex network body ECU) vehicle setting processing error

  • CAN communication system

  • Front power seat control system

  • Main body ECU (multiplex network body ECU)

  • Navigation receiver assembly

CAUTION / NOTICE / HINT

Note


  • Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.

  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.

    Click here

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Use the GTS to check if the CAN communication system is functioning normally.

      for LHD: Click here

      for RHD: Click here

      OK
      CAN communication DTCs are not output.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. CHECK FRONT POWER SEAT CONTROL SYSTEM


    1. Check if the front power seat control system is malfunctioning.

      Click here

      Tech Tips

      Customization may not be possible depending on the malfunction in the front power seat control system.

      OK
      No malfunctions are present in the front power seat control system.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO FRONT POWER SEAT CONTROL SYSTEM Click here

    OK

  3. CHECK CUSTOMIZE ITEMS


    1. Make a note of the customizable items for the front power seat control system.

      Tech Tips

      The items shown as customizable via the navigation system vehicle customization screen can also be changed using the GTS. In the following step, the GTS will be used.


      1. To match-up the items on the navigation system vehicle customization screen with the items on the GTS, check the customize parameters list for the front power seat control system related items that can be customized via the navigation system vehicle customization screen.

        Click here

    2. Using the GTS, confirm that it is possible to change the settings of the customize parameters that are available for customization via the navigation system vehicle customization screen.

      OK
      The items available for customization via the navigation system vehicle customization screen can be customized successfully using the GTS.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    NG

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here