AUDIO AND VISUAL SYSTEM (w/ Multi-display), 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 audio and visual system vehicle customization screen.

Tech Tips

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

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

  • CAN communication system

  • Smart entry and start system (for Entry Function)

  • Certification ECU (smart key ECU assembly)

  • Multi-media module receiver assembly

INSPECTION PROCEDURE

Note


  • Before replacing the certification ECU (smart key ECU assembly), 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 Audio and Visual System Click here.

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 (for Entry Function)


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

      Tech Tips

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

      OK
      No malfunctions are present in the smart entry and start system (for Entry Function).

    NG

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

    OK

  3. CHECK CUSTOMIZE ITEMS


    1. Display the "Door lock settings" screen.

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

      Tech Tips

      These smart entry and start system (for Entry Function) items shown as customizable via the audio and visual system vehicle customization screen can also be changed using the GTS. In the following step, use the GTS.


      1. To match-up the items on the audio and visual 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 audio and visual system vehicle customization screen Click here.

    3. Using the GTS, confirm that it is possible to change the settings of the smart entry and start system (for Entry Function) related customize parameters that are shown as customizable via the audio and visual system vehicle customization screen.

      OK
      The items available for customization via the audio and visual system vehicle customization screen can be customized successfully using the GTS.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here