Toyota Tacoma (2015-2018) Service Manual: Main Body ECU Vehicle Information Reading/Writing Process Malfunction (B15F6)

DESCRIPTION

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

PROCEDURE

(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

(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

(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

(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

(a) Display the "Vehicle Customization" screen.

(b) Make a note of the customizable items for each main body ECU (driver side junction block assembly) related system.

HINT:

These items shown as customizable via the navigation 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 navigation 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 navigation receiver assembly screen (See page ).

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

(3) To match-up the items in the navigation 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 navigation 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 navigation receiver assembly screen.

OK:

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

OK

REPLACE NAVIGATION RECEIVER ASSEMBLY

NG

REPLACE MAIN BODY ECU