AUDIO AND VISUAL SYSTEM(for 12.3 Inch 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 accessory meter assembly 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

  • Entry and start system

  • Certification ECU (smart key ECU assembly)

  • Radio 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
      NG
      OK

    NG

    GO TO CAN COMMUNICATION SYSTEM Click here

    OK

  2. CHECK ENTRY AND START SYSTEM


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

      Click here

      Tech Tips

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

      OK
      No malfunctions are present in the entry and start system.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO ENTRY AND START SYSTEM Click here

    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 GTS. In the following step, the GTS will be used.


      1. To match-up the items on the accessory meter assembly with the items on the GTS, check the customize parameters list for the entry and start system related items that can be customized via the accessory meter assembly screen.

        Click here

    3. Using the GTS, confirm that it is possible to change the settings of the customize parameters that are available for customization via the accessory meter assembly screen.

      OK
      The items available for customization via the accessory meter assembly screen can be customized successfully using the GTS.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)