NAVIGATION SYSTEM (for Radio and Display Type), 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 (smart key ECU assembly) cannot be customized via the navigation system vehicle customization screen.

Tech Tips

The certification ECU (smart key ECU assembly) controls the smart entry and start system related items that are customizable via the navigation system vehicle customization screen.

DTC No. DTC Detection Condition Trouble Area
B15F7 Certification ECU (smart key ECU assembly) vehicle setting processing malfunction

  • CAN communication system

  • Smart entry and start system

  • Certification ECU (smart key ECU assembly)

  • Radio and display receiver assembly

INSPECTION PROCEDURE

Note

Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


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

      OK
      CAN communication DTCs are not output.

    NG

    GO TO CAN COMMUNICATION SYSTEM Click here

    OK

  2. CHECK SMART ENTRY AND START SYSTEM


    1. for Entry Function:

      Check if the smart entry and start system is malfunctioning Click here.

      for Start Function:

      Check if the smart entry and start system is malfunctioning Click here.

      Tech Tips

      Customization may not be possible depending on the malfunction in the smart entry and start system.

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

    B

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

    C

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

    A

  3. CHECK CUSTOMIZE ITEMS


    1. Make a note of the customizable items for the certification ECU (smart key ECU assembly) related 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 smart entry and start system (for Entry Function) related items that can be customized via the navigation system vehicle customization screen Click here.

      2. 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 smart entry and start system (for Start Function) 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.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here