Toyota Tundra Service Manual: D-Seat ECU Vehicle Information Reading/Writing Process Malfunction (B15F8)

Toyota Tundra Service Manual / Audio, Visual, Telematics / Audio / Video / Audio And Visual System / D-Seat ECU Vehicle Information Reading/Writing Process Malfunction (B15F8)

DESCRIPTION

This DTC is stored when items controlled by the position control ECU and switch assembly cannot be customized via the audio and visual system vehicle customization screen.

HINT:

The position control ECU and switch assembly controls the front power seat control system related items that are customizable via the radio and display receiver assembly screen.

DTC Code

DTC Detection Condition

Trouble Area

B15F8

Position control ECU and switch assembly vehicle setting processing error.

  • CAN communication system
  • Front power seat control system (w/ Memory)
  • Position control ECU and switch assembly
  • 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 system DTCs are not output.

NG

GO TO CAN COMMUNICATION SYSTEM

OK

2.

CHECK FRONT POWER SEAT CONTROL SYSTEM

(a) Check if the front power seat control system is malfunctioning (See page ).

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).

NG

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

OK

3.

CHECK CUSTOMIZE ITEMS

(a) Display the "Vehicle Customization" screen.

(b) Make a note of the customizable items for each position control ECU assembly 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) 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 (See page ).

(c) Manually change and confirm that it was possible to successfully change the settings of the customize parameters for each system 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 manual procedure.

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 POSITION CONTROL ECU AND SWITCH ASSEMBLY

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

    XM Tuner Antenna Disconnected (B15FE,B15FF)

    See More:

    Toyota Tundra Service Manual > Vehicle Stability Control System: Problem Symptoms Table
    PROBLEM SYMPTOMS TABLE If there are no DTCs output and the problem still occurs, check the suspected areas for each problem symptom in the order given in the following table and proceed to the relevant troubleshooting page. NOTICE: When replacing the skid control ECU (brake actuator assembly), senso ...

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