Toyota Tacoma 2015-2018 Service Manual: 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 audio and visual system vehicle customization screen.

HINT:

The certification ECU (smart key ECU assembly) controls the smart key system related items that are customizable via the audio and visual system vehicle customization screen.

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the certification ECU (smart key ECU assembly), refer to Registration (See page ).

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 smart key system (for Entry Function) is malfunctioning (See page ).

HINT:

Customization may not be possible depending on the malfunction in the smart key system (for Entry Function).

OK:

No malfunctions are present in the smart key system (for Entry Function).

NG

GO TO SMART KEY SYSTEM (for Entry Function)

OK

(a) Check if the smart key system (for Start Function) is malfunctioning (See page ).

HINT:

Customization may not be possible depending on the malfunction in the smart key system (for Start Function).

OK:

No malfunctions are present in the smart key system (for Start Function).

NG

GO TO SMART KEY SYSTEM (for Start Function)

OK

(a) Make a note of the customizable items for each certification ECU (smart key ECU assembly) related system.

HINT:

The items shown as customizable via the audio and visual system vehicle customization screen can also be changed manually. In the following step, change the items manually.

(1) Check the customize parameters list for the smart key system (for Entry Function) related items that can be customized via the audio and visual system vehicle customization screen (See page ).

(2) Check the customize parameters list for the smart key system (for Start Function) related items that can be customized via the audio and visual system vehicle customization screen (See page ).

(b) Confirm that it is possible to manually change the settings of the customize parameters for each system that are available for customization via the audio and visual system vehicle customization screen.

OK:

The items available for customization via the audio and visual system vehicle customization screen can be customized successfully using the manual procedure.

OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)