Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: 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)

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

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

Click here

OK:

CAN communication DTCs are not output.

NG

GO TO CAN COMMUNICATION SYSTEM

OK

(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.

NG

GO TO POWER DOOR LOCK CONTROL SYSTEM

OK

(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.

NG

GO TO WIRELESS DOOR LOCK CONTROL SYSTEM

OK

(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).

NG

GO TO LIGHTING SYSTEM (for Interior)

OK

(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).

NG

GO TO LIGHTING SYSTEM (for Exterior)

OK

(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.

OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

NG

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)