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. Detection Item DTC Detection Condition Trouble Area
B15F7 Certification ECU Vehicle Information Reading/Writing Process Malfunction Certification ECU (smart key ECU assembly) vehicle setting processing error
  • CAN communication system

  • Smart entry and start system

  • Certification ECU (smart key ECU assembly)

  • Radio and display receiver assembly

CAUTION / NOTICE / HINT

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.
      Result
      Proceed to
      OK
      NG

    NG
    OK
  2. CHECK SMART ENTRY AND START SYSTEM


    1. Check if the smart entry and start system is malfunctioning.

      for Entry Function: Click here

      for Start Function: 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
      Proceed to
      OK
      NG

    NG
    OK
  3. CHECK CUSTOMIZE ITEMS


    1. Make a note of the customizable items for the certification ECU 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 related items that can be customized via the navigation system vehicle customization screen.

        for Entry Function: Click here

        for Start Function: 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
    NG