Toyota Avalon (XX50): Main Body ECU Vehicle Information Reading/Writing Process Malfunction (B15F6). Certification ECU Vehicle Information Reading/Writing Process Malfunction (B15F7). D-Seat ECU Vehicle Information Reading

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Audio, Visual, Telematics / Navigation / Multi Info Display / Navigation System(for Gasoline Model) / Main Body ECU Vehicle Information Reading/Writing Process Malfunction (B15F6). Certification ECU Vehicle Information Reading/Writing Process Malfunction (B15F7). D-Seat ECU Vehicle Information Reading

Main Body ECU Vehicle Information Reading/Writing Process Malfunction (B15F6)

DESCRIPTION

This DTC is stored when items controlled by the main body ECU (multiplex network body ECU) cannot be customized via the navigation system vehicle customization screen.

HINT:

The main body ECU (multiplex network body ECU) controls the items for the following systems that are customizable via the navigation system vehicle customization screen:

Power door lock control system
Wireless door lock control system
Lighting system (for Interior)
Lighting system (for Exterior)

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B15F6	Main Body ECU Vehicle Information Reading/Writing Process Malfunction	Main body ECU (multiplex network body ECU) vehicle setting processing malfunction	CAN communication system Power door lock control system Wireless door lock control system Lighting system (for Interior) Lighting system (for Exterior) Main body ECU (multiplex network body ECU) 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 Navigation System.
Click here
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 occur:
- A communication malfunction DTC may be stored.
- The radio and display receiver assembly may not operate normally.
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here

PROCEDURE

1.	CHECK CAN COMMUNICATION SYSTEM

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

Click here

OK:

CAN communication DTCs are not output.

GO TO CAN COMMUNICATION SYSTEM

2.	CHECK POWER DOOR LOCK CONTROL SYSTEM

(a) Check if the power door lock control system is malfunctioning.

Click here

HINT:

Customization may not be possible depending on the malfunction in the power door lock control system.

OK:

No malfunctions are present in the power door lock control system.

GO TO POWER DOOR LOCK CONTROL SYSTEM

3.	CHECK WIRELESS DOOR LOCK CONTROL SYSTEM

(a) Check if the wireless door lock control system is malfunctioning.

Click here

HINT:

Customization may not be possible depending on the malfunction in the wireless door lock control system.

OK:

No malfunctions are present in the wireless door lock control system.

GO TO WIRELESS DOOR LOCK CONTROL SYSTEM

4.	CHECK LIGHTING SYSTEM (for Interior)

(a) Check if the lighting system (for Interior) is malfunctioning.

Click here

HINT:

Customization may not be possible depending on the malfunction in the lighting system (for Interior).

OK:

No malfunctions are present in the lighting system (for Interior).

GO TO LIGHTING SYSTEM (for Interior)

5.	CHECK LIGHTING SYSTEM (for Exterior)

(a) Check if the lighting system (for Exterior) is malfunctioning.

w/ Cornering Light: Click here

w/o Cornering Light: Click here

HINT:

Customization may not be possible depending on the malfunction in the lighting system (for Exterior).

OK:

No malfunctions are present in the lighting system (for Exterior).

GO TO LIGHTING SYSTEM (for Exterior)

6.	CHECK CUSTOMIZE ITEMS

(a) Make a note of the customizable items for each main body ECU (multiplex network body ECU) related system.

HINT:

The items shown as customizable via the navigation system vehicle customization screen can also be changed using the Techstream. In the following steps, the Techstream will be used.

(1) To match-up the items on the navigation system vehicle customization screen with the items on the Techstream, check the customize parameters list for the power door lock control system related items that can be customized via the navigation system vehicle customization screen.

Click here

(2) To match-up the items on the navigation system vehicle customization screen with the items on the Techstream, check the customize parameters list for the wireless door lock control system related items that can be customized via the navigation system vehicle customization screen.

Click here

(3) To match-up the items on the navigation system vehicle customization screen with the items on the Techstream, check the customize parameters list for the lighting system (for Interior) related items that can be customized via the navigation system vehicle customization screen.

Click here

(4) To match-up the items on the navigation system vehicle customization screen with the items on the Techstream, check the customize parameters list for the lighting system (for Exterior) related items that can be customized via the navigation system vehicle customization screen.

w/ Cornering Light: Click here

w/o Cornering Light: Click here

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

OK:

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

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Certification ECU Vehicle Information Reading/Writing Process Malfunction (B15F7)

DESCRIPTION

This DTC is stored when items controlled by the certification ECU (smart key ECU assembly) cannot be customized via the navigation system vehicle customization screen.

HINT:

The certification ECU (smart key ECU assembly) controls the smart key system related items that are customizable via the navigation 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 Navigation System.
Click here
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 occur:
- 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.
Click here

PROCEDURE

1.	CHECK CAN COMMUNICATION SYSTEM

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

Click here

OK:

CAN communication DTCs are not output.

GO TO CAN COMMUNICATION SYSTEM

2.	CHECK SMART KEY SYSTEM

(a) Check if the smart key system is malfunctioning.

for Entry Function: Click here

for Start Function: Click here

HINT:

Customization may not be possible depending on the malfunction in the smart key system.

OK:

No malfunctions are present in the smart key system.

GO TO SMART KEY SYSTEM

3.	CHECK CUSTOMIZE ITEMS

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

HINT:

The items shown as customizable via the navigation 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 navigation 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 navigation system vehicle customization screen.

for Entry Function: Click here

for Start Function: Click here

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

OK:

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

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

D-Seat ECU Vehicle Information Reading/Writing Process Malfunction (B15F8)

DESCRIPTION

This DTC is stored when items controlled by the main body ECU (multiplex network body ECU) cannot be customized via the navigation system vehicle customization screen.

HINT:

The main body ECU (multiplex network body ECU) controls the front power seat control system (w/ Memory) related items that are customizable via the radio and display receiver assembly screen.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B15F8	D-Seat ECU Vehicle Information Reading/Writing Process Malfunction	Main body ECU (multiplex network body ECU) vehicle setting processing malfunction	CAN communication system Front power seat control system (w/ Memory) Main body ECU (multiplex network body ECU) 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 Navigation System.
Click here
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 occur:
- A communication malfunction DTC may be stored.
- The radio and display receiver assembly may not operate normally.
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here

PROCEDURE

1.	CHECK CAN COMMUNICATION SYSTEM

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

Click here

OK:

CAN communication DTCs are not output.

GO TO CAN COMMUNICATION SYSTEM

2.	CHECK FRONT POWER SEAT CONTROL SYSTEM (w/ Memory)

(a) Check if the front power seat control system (w/ Memory) is malfunctioning.

Click here

HINT:

Customization may not be possible depending on the malfunction in the front power seat control system (w/ Memory).

OK:

No malfunctions are present in the front power seat control system (w/ Memory).

GO TO FRONT POWER SEAT CONTROL SYSTEM (w/ Memory)

3.	CHECK CUSTOMIZE ITEMS

(a) Display the "Vehicle Customization" screen.

(b) Make a note of the customizable items for each main body ECU (multiplex network body ECU).

HINT:

The items shown as customizable via the navigation 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 radio and display receiver assembly with the items on the Techstream, check the customize parameters list for the front power seat control system (w/ Memory) related items that can be customized via the radio and display receiver assembly screen.

Click here

(c) Using the Techstream, check that it is possible to change the settings of the customize parameters that are available for customization via the radio and display receiver assembly screen.

OK:

The items available for customization via the radio and display receiver assembly screen can be customized successfully using the Techstream.

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Stereo Component Amplifier Disconnected (B15D3). Telematics Transceiver Disconnected (B15DB). Air Conditioner ECU Vehicle Information Reading/Writing Processor Malfunction (B15F5)

XM Tuner Antenna Disconnected (B15FE,B15FF). GVIF Disconnected (from Extension Module to H/U) (B153A). AV Signal Stoppage (Low Battery Voltage) (B158F)

See More:

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Brake (front): Front Brake
Components COMPONENTS ILLUSTRATION *1 FRONT DISC BRAKE ANTI-SQUEAL SHIM KIT *2 FRONT DISC BRAKE PAD *3 FRONT FLEXIBLE HOSE *4 FRONT DISC BRAKE CYLINDER ASSEMBLY *5 FRONT NO. 1 DISC BRAKE ANTI-SQUEAL SHIM *6 FRONT NO. 2 DISC BRAKE ANTI-SQUEAL SHIM *7 FRONT DISC BRAKE PAD WEAR INDICATOR PLATE *8 GASKE ...