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 customization screen.

Tip:

The certification ECU (smart key ECU assembly) controls the entry and start system (for Entry Function) related items that are customizable via the display 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 (for Entry Function)

  • Certification ECU (smart key ECU assembly)

  • Radio and display receiver assembly

PROCEDURE

  1. CHECK CAN COMMUNICATION SYSTEM

    1. Check if the CAN communication system is functioning normally.

      for LHD:

      Click hereClick hereClick here

      for RHD:

      Click hereClick hereClick here

    Result

    Proceed to

    No DTCs are output

    CAN DTCs are output
    CAN DTCs are output

    GO TO CAN COMMUNICATION SYSTEM

    for LHD:

    Click here

    for RHD:

    Click here

    No DTCs are output

  2. CHECK ENTRY AND START SYSTEM (for Entry Function)

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

      Click here

      Tip:

      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).

    Result

    Proceed to

    OK

    NG
    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 related system.

      Tip:

      These items shown as customizable via the audio and visual system vehicle customization screen can also be changed manually. In a following step, a manual procedure will be used.

      1. 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 hereClick here

    3. Manually change and confirm that it was possible to successfully change the settings of the customize parameters for each system 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 manual procedure.

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

    Click here

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)