AUDIO AND VISUAL 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 audio and visual system vehicle settings screen.

Tech Tips

The certification ECU (smart key ECU assembly) controls the entry and start related items that are customizable via the display screen:

DTC Code DTC Detection Condition Trouble Area
B15F7 Certification ECU (smart key ECU assembly) vehicle setting processing error.

  • CAN communication system

  • Entry and start system (for Entry Function)

  • Certification ECU (smart key ECU assembly)

  • Radio and display receiver assembly

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Use the intelligent tester 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 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).

    NG

    GO TO ENTRY AND START SYSTEM Click here

    OK

  3. CHECK CUSTOMIZE ITEMS


    1. Display the "Vehicle settings" screen.

    2. Make a note of the customizable items for each certification ECU (smart key ECU assembly) related system.

      Tech Tips

      These items shown as customizable via the audio and visual system vehicle settings screen can also be changed using the intelligent tester. In a following step, the intelligent tester will be used.


      1. To match-up the items in the radio and display receiver assembly with the items on the intelligent tester, check the customize parameters list for the entry and start system (for Entry Function) related items that can be customized via the display screen Click here.

    3. Using the intelligent tester, confirm that it is possible to change the settings of the customize parameters that are available for customization via the display screen.

      OK
      The items available for customization via the display screen can be customized successfully using the intelligent tester.

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here