NAVIGATION SYSTEM, Diagnostic DTC:B15F7

DTC Code DTC Name
B15F7 Certification ECU Vehicle Information Reading/Writing Process Malfunction

DESCRIPTION

This DTC is stored when items controlled by the certification ECU cannot be customized via the navigation system vehicle customization screen.

Tech Tips

The certification ECU controls the entry and start system (for Entry Function) related items that are customizable via the multi-display assembly screen.

DTC No. Detection Item DTC Detection Condition Trouble Area
B15F7 Certification ECU Vehicle Information Reading/Writing Process Malfunction Certification ECU vehicle setting processing error.

  • CAN communication system

  • Entry and start system (for Entry Function)*1

  • Push-button start*2

  • Certification ECU

  • Radio receiver assembly

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 (w/ Entry Function) A
      OK (w/o Entry Function) B
      NG (for LHD) C
      NG (for RHD) D

    B

    CHECK PUSH-BUTTON START Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    D

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  2. CHECK ENTRY AND START SYSTEM (for Entry Function)


    1. Check if the entry and start system (for Entry Function) is malfunctioning.

      Click here

      Tech Tips

      Customization may not be possible depending on the malfunction in the entry and start system (for Entry Function).

      OK
      No malfunctions are present in the entry and start system (for Entry Function).
      Result
      Proceed to
      OK
      NG

    NG

    GO TO ENTRY AND START SYSTEM (for Entry Function) Click here

    OK

  3. CHECK CUSTOMIZE ITEMS


    1. Display the "Vehicle Customization" screen.

    2. Make a note of the customizable items for each certification ECU related system.

      Tech Tips

      These items shown as customizable via the navigation system vehicle customization screen can also be changed manually. In a following step, a manual procedure will be used.


      1. Check the customize parameters list for the entry and start system (for Entry Function) related items that can be customized via the multi-display assembly screen.

        Click here

    3. Manually change and confirm that it was possible to successfully change the settings of the customize parameters for each system that are available for customization via the multi-display assembly screen.

      OK
      The items available for customization via the multi-display assembly screen can be customized successfully using the manual procedure.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    NG

    REPLACE CERTIFICATION ECU

  4. CHECK PUSH-BUTTON START


    1. Check if the push-button start is malfunctioning.

      Click here

      Tech Tips

      Customization may not be possible depending on the malfunction in the push-button start.

      OK
      No malfunctions are present in the push-button start.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO PUSH-BUTTON START Click here

    OK

  5. CHECK CUSTOMIZE ITEMS


    1. Display the "Vehicle customization" screen.

    2. Make a note of the customizable items for each certification ECU related system.

      Tech Tips

      These items shown as customizable via the navigation system vehicle customization screen can also be changed manually. In a following step, a manual procedure will be used.


      1. Check the customize parameters list for the push-button start related items that can be customized via the multi-display assembly screen.

        Click here

    3. Manually change and confirm that it was possible to successfully change the settings of the customize parameters for each system that are available for customization via the multi-display assembly screen.

      OK
      The items available for customization via the multi-display assembly screen can be customized successfully using the manual procedure.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    NG

    REPLACE CERTIFICATION ECU