NAVIGATION SYSTEM, 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 cannot be customized via the navigation system vehicle customization screen.

Tech Tips

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

DTC No. Detection Item DTC Detection Condition Trouble Area
B15F7 Certification ECU Vehicle Information Reading/Writing Process Malfunction Certification ECU vehicle setting processing error.

  • CAN communication system

  • Entry and start system (for Entry Function)

  • Certification ECU

  • Radio receiver assembly

CAUTION / NOTICE / HINT

Note


  • The following malfunctions may occur if a radio receiver assembly from another vehicle is installed to this vehicle. Therefore, when replacing the radio receiver assembly, be sure to replace it with new one.


    • Communication malfunction DTC is output

    • Does not operate normally

  • Before replacing the certification ECU, refer to the Service Bulletin.

Tech Tips

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation 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.
      Result
      Proceed to
      OK
      NG

    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).
      Result
      Proceed to
      OK
      NG

    NG

    GO TO ENTRY AND START SYSTEM (for Entry Function) 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

      These items shown as customizable via the navigation 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 multi-display screen.

        Click 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 multi-display screen.

      OK
      The items available for customization via the multi-display screen can be customized successfully using the manual procedure.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    NG

    REPLACE CERTIFICATION ECU