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

DTC No. 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 receiver assembly

INSPECTION PROCEDURE

Note

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

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
    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
    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

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


      1. To match-up the items on the multi-display 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 multi-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 multi-display screen.

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

    NG
    OK