B2064

PRE-COLLISION: PRE-COLLISION SYSTEM: B2064: Vehicle Type Signal Malfunction

DTC B2064 - Vehicle Type Signal Malfunction

DESCRIPTION

The seat belt control ECU is connected to the main body ECU through CAN communication.
The seat belt control ECU receives vehicle model information from the main body ECU and determines whether the seat belt buckle switch information from the airbag sensor center is for the driver seat or the front passenger seat.
DTC B2064 is output when CAN communication with the main body ECU is normal and when communication is available, but the steering wheel position information is not set or varies.






INSPECTION PROCEDURE

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM
(a) Select "Bus Check" from the "System Select" Diagnosis System
(b) Select "Communication Malfunction DTC" from the "Bus Check" screen, and then select "Enter" Diagnosis System

Result





B -- GO TO CAN COMMUNICATION SYSTEM
A -- Continue to next step.

2. CHECK MAIN BODY ECU
(a) Enter the following menus: Body Electrical / Pre-Collision 1 / Trouble Code /
(b) Select "Clear" and clear the data.
(c) Recheck for DTCs.
OK:
DTC B2064 is not output.
NG -- REPLACE MAIN BODY ECU
OK -- USE SIMULATION METHOD TO CHECK
3. REPLACE MAIN BODY ECU
(a) Replace the main body ECU.
NEXT -- Continue to next step.

4. CHECK SEAT BELT CONTROL ECU
(a) Using the Techstream, enter the following menus: Body Electrical / Pre-Collision 1 / Trouble Code /
(b) Select "CLEAR" and clear the data.
(c) Recheck for DTCs.
OK:
DTC B2064 is not output.
NG -- REPLACE SEAT BELT CONTROL ECU
OK -- END