DTC    B2064    Vehicle Type Signal Malfunction

for Preparation Click here


DESCRIPTION

The seat belt control ECU is connected to the main body ECU using 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 center airbag sensor assembly is for the driver seat or the passenger seat.
DTC B2064 is stored when the CAN communication frame with the main body ECU is normal and communication is available, but the steering wheel position information is not set or varies.

DTC No.
DTC Detection Condition
Trouble Area
B2064
Communication with the main body ECU is normal and received steering wheel position information is not set (three times in succession).
  1. CAN communication system
  2. Power management control ECU
  3. Main body ECU
  4. Seat belt control ECU

INSPECTION PROCEDURE

HINT:
This circuit uses CAN communication. Therefore, be sure to check that the CAN communication system is normal before performing inspection (Click here).

1.CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM)

  1. Clear the DTCs (Click here).

  1. Recheck for DTCs.

    OK:
    CAN communication system DTC is not output.



NG
GO TO CAN COMMUNICATION SYSTEM (Click here)
OK


2.CHECK DTC OUTPUT (PRE-CRASH SAFETY SYSTEM)

  1. Using the intelligent tester, enter the following menus: Body / Pre-Crash / DTC.

  1. Clear the DTCs (Click here).

  1. Recheck for DTCs.

    OK:
    DTC B2064 is not output.



NG
Go to step 3
OK

CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) (Click here)  

3.REPLACE MAIN BODY ECU

  1. Replace the main body ECU (Click here).


NEXT


4.CHECK DTC OUTPUT (PRE-CRASH SAFETY SYSTEM)

  1. Using the intelligent tester, enter the following menus: Body / Pre-Crash / DTC.

  1. Clear the DTCs (Click here).

  1. Recheck for DTCs.

    OK:
    DTC B2064 is not output.



NG
REPLACE SEAT BELT CONTROL ECU (Click here)
OK

END