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Description: DTC B15F7 Certification ECU Vehicle Information Reading/Writing Process Malfunction

This document provides troubleshooting steps for a 2014-2016 Toyota IS200T, IS250, IS300, or IS350 that has a DTC B15F7 fault code indicating a problem with the certification ECU reading and writing vehicle information. The steps include checking the CAN communication system, smart access system, and verifying customization items can be changed using the Techstream tool. If unable to customize items with Techstream, the radio receiver assembly or certification ECU may need replacement.

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Jack Cardiag
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0% found this document useful (0 votes)
483 views3 pages

Description: DTC B15F7 Certification ECU Vehicle Information Reading/Writing Process Malfunction

This document provides troubleshooting steps for a 2014-2016 Toyota IS200T, IS250, IS300, or IS350 that has a DTC B15F7 fault code indicating a problem with the certification ECU reading and writing vehicle information. The steps include checking the CAN communication system, smart access system, and verifying customization items can be changed using the Techstream tool. If unable to customize items with Techstream, the radio receiver assembly or certification ECU may need replacement.

Uploaded by

Jack Cardiag
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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3/6/2017 AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: B15F7; Certification ECU Vehicle Information Reading/Writing Process Malfunction; 2014 ­ 2016 MY IS…

Last Modified: 03­03­2017 6.7:8.0.40 Doc ID: RM1000000005VQC


Model Year Start: 2014 Model: IS200T Prod Date Range: [04/2013 ­           ]

Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: B15F7; Certification ECU Vehicle Information Reading/Writing
Process Malfunction; 2014 ­ 2016 MY IS200T IS250 IS300 IS350 [04/2013 ­        ]

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 access system with push­button start (for
Entry Function) related items that are customizable via the multi­display assembly screen.

DTC DETECTION ITEM DTC DETECTION CONDITION TROUBLE AREA


NO.

CAN communication
system
Smart access system
Certification ECU Vehicle Certification ECU (smart key ECU
with push­button start
B15F7 Information Reading/Writing assembly) vehicle setting processing
(for Entry Function)
Process Malfunction error
Certification ECU (smart
key ECU assembly)
Radio receiver assembly

CAUTION / NOTICE / HINT
NOTICE:
Before replacing the certification ECU (smart key ECU assembly), refer to Registration.

Click here 
After replacing the radio receiver assembly of vehicles subscribed to pay­type satellite radio broadcasts, XM radio
ID registration is necessary (w/ SDARS System).

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

(a) Use the Techstream to check if the CAN communication system is functioning normally.

Click here 

OK:
CAN DTCs are not output.

NG GO TO CAN COMMUNICATION SYSTEM

https://techinfo.toyota.com/t3Portal/resources/jsp/siviewer/index.jsp?dir=rm/RM30G0U&locale=en&User=false&publicationNumber=RM30G0U&objType=toc/… 1/3
3/6/2017 AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: B15F7; Certification ECU Vehicle Information Reading/Writing Process Malfunction; 2014 ­ 2016 MY IS…

OK

2. CHECK SMART ACCESS SYSTEM WITH PUSH­BUTTON START (for Entry Function)

(a) Check if the smart access system with push­button start (for Entry Function) is malfunctioning.

Click here 

HINT:
Customization may not be possible depending on the malfunction in the smart access system with push­button
start (for Entry Function).

OK:
No malfunctions are present in the smart access system with push­button start (for Entry Function).

GO TO SMART ACCESS SYSTEM WITH PUSH­BUTTON
NG START (for Entry Function)

OK

3. CHECK CUSTOMIZE ITEMS

(a) Display the "Vehicle Customization" screen.

(b) 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 match­up the items on the multi­display assembly with the items on the Techstream, check the
customize parameters list for the smart access system with push­button start (for Entry Function)
related items that can be customized via the multi­display assembly screen.

Click here 

(c) Using the Techstream, confirm that it is possible to change the settings of the customize parameters
that are available for customization via the multi­display assembly screen.
OK:
The items available for customization via the multi­display assembly screen can be customized successfully using
the Techstream.

OK REPLACE RADIO RECEIVER ASSEMBLY

NG
REPLACE CERTIFICATION ECU (SMART KEY ECU
ASSEMBLY)   

https://techinfo.toyota.com/t3Portal/resources/jsp/siviewer/index.jsp?dir=rm/RM30G0U&locale=en&User=false&publicationNumber=RM30G0U&objType=toc/… 2/3
3/6/2017 AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: B15F7; Certification ECU Vehicle Information Reading/Writing Process Malfunction; 2014 ­ 2016 MY IS…

https://techinfo.toyota.com/t3Portal/resources/jsp/siviewer/index.jsp?dir=rm/RM30G0U&locale=en&User=false&publicationNumber=RM30G0U&objType=toc/… 3/3

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