Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM1000000018F7O
Model Year Start: 2018 Model: Sienna Prod Date Range: [11/2017 -           ]
Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: B15F7; Certification ECU Vehicle Information Reading/Writing Process Malfunction; 2018 - 2020 MY Sienna [11/2017 -        ]

DTC

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.

HINT:

The certification ECU (smart key ECU assembly) controls the smart key system related items that are customizable via the audio and visual system vehicle customization 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 malfunction

  • CAN communication system
  • Smart key system
  • Certification ECU (smart key ECU assembly)
  • Radio and display receiver assembly

CAUTION / NOTICE / HINT

NOTICE:

  • Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.

    Click here 2018 - 2020 MY Sienna [11/2017 -        ]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: PRECAUTION

  • When replacing the radio and display receiver assembly, always replace it with a new one. If a radio and display receiver assembly which was installed to another vehicle is used, the following may occurs:
    • A communication malfunction DTC may be stored.
    • The radio and display receiver assembly may not operate normally.
  • Before replacing the certification ECU (smart key ECU assembly), refer to Registration.

    w/ Smart Key System: Click here 2017 - 2020 MY Sienna [08/2016 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/ Smart Key System): REGISTRATION

PROCEDURE

1.

CHECK CAN COMMUNICATION SYSTEM

(a) Use the Techstream to check if the CAN communication system is functioning normally (See page 2018 MY Sienna [11/2017 - 08/2018]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2019 - 2020 MY Sienna [08/2018 -        ]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSTIC TROUBLE CODE CHART ).

OK:

CAN communication DTCs are not output.

NG

GO TO CAN COMMUNICATION SYSTEM

OK

2.

CHECK SMART KEY SYSTEM (FOR ENTRY FUNCTION)

(a) Check if the smart key system (for Entry Function) is malfunctioning (See page 2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): HOW TO PROCEED WITH TROUBLESHOOTING ).

HINT:

Customization may not be possible depending on the malfunction in the smart key system (for Entry Function).

OK:

No malfunctions are present in the smart key system (for Entry Function).

NG

GO TO SMART KEY SYSTEM (FOR ENTRY FUNCTION)

OK

3.

CHECK CUSTOMIZE ITEMS

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

HINT:

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

(1) To match-up the items on the audio and visual system vehicle customization screen with the items on the Techstream, check the customize parameters list for the smart key system related items that can be customized via the audio and visual system vehicle customization screen.

  • for Start Function: Click here 2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Start Function): CUSTOMIZE PARAMETERS
  • for Entry Function: Click here 2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): CUSTOMIZE PARAMETERS

(b) Using the Techstream, check that it is possible to change the settings of the customize parameters that are available for customization via the audio and visual system vehicle customization screen.

OK:

The items available for customization via the audio and visual system vehicle customization screen can be customized successfully using the Techstream.

OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)