Toyota Tundra Service Manual: Main Body ECU Vehicle Information Reading/Writing Process Malfunction (B15F6)

Toyota Tundra Service Manual / Audio, Visual, Telematics / Audio / Video / Audio And Visual System / 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 audio and visual 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 radio and display receiver assembly screen:
  • Power door lock control system
  • Wireless door lock control system
  • Lighting system

DTC Code

DTC Detection Condition

Trouble Area

B15F6

Main body ECU (multiplex network body ECU) vehicle setting processing error.

  • CAN communication system
  • Power door lock control system
  • Wireless door lock control system
  • Lighting system
  • Main body ECU (multiplex network body ECU)
  • Radio and display receiver assembly

PROCEDURE

1.

CHECK CAN COMMUNICATION SYSTEM

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

OK:

CAN communication DTCs are not output.

NG

GO TO CAN COMMUNICATION SYSTEM

OK

2.

CHECK POWER DOOR LOCK CONTROL SYSTEM

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

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

3.

CHECK WIRELESS DOOR LOCK CONTROL SYSTEM

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

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

4.

CHECK LIGHTING SYSTEM

(a) Check if the lighting system is malfunctioning (See page ).

HINT:

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

OK:

No malfunctions are present in the lighting system.

NG

GO TO LIGHTING SYSTEM

OK

5.

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) related system.

HINT:

These items shown as customizable via the radio and display receiver assembly vehicle customization screen can also be changed using the Techstream. In a following step, the Techstream will be used.

(1) To match-up the items in the radio and display receiver assembly 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 radio and display receiver assembly screen (See page ).

(2) To match-up the items in the radio and display receiver assembly 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 radio and display receiver assembly screen (See page ).

(3) To match-up the items in the radio and display receiver assembly with the items on the Techstream, check the customize parameters list for the lighting system related items that can be customized via the radio and display receiver assembly screen (See page ).

(c) Using the Techstream, confirm 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.

Result

Result

Proceed to

OK (for Column Shift Type)

A

OK (for Floor Shift Type)

B

NG

C

A

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

B

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

C

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    Speaker Output Short (B15C3)

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

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