PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:B2064

DTC Code DTC Name
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.

DTC Code DTC Detection Condition Trouble Area
B2064 While initial check is running, main body ECU is not received steering wheel position information for 3 seconds

  • Main body ECU

  • CAN communication system

  • Seat belt control ECU

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Select "Bus Check" from the "System Select" screen on the intelligent tester.

    2. Select "Communication Malfunction DTC" from the "Bus Check" screen, and then select "Enter".

      Result
      Result Proceed to
      CAN communication system DTC is not output A
      CAN communication system DTC is output (for LHD) B
      CAN communication system DTC is output (for RHD) C

    B

    GO TO CAN COMMUNICATION SYSTEM (for LHD) Click here

    C

    GO TO CAN COMMUNICATION SYSTEM (for RHD) Click here

    A

  2. CHECK MAIN BODY ECU


    1. Using the intelligent tester, enter the following menus: Body / Pre-Crash1 /. Then select "Diagnostic Code".

    2. Select "Clear" and clear the data.

    3. Recheck for DTC.

      OK
      DTC B2064 is not output.

    NG

    REPLACE MAIN BODY ECU Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  3. REPLACE MAIN BODY ECU


    1. Replace the main body ECU.


    NEXT

  4. CHECK SEAT BELT CONTROL ECU


    1. Using the intelligent tester, enter the following menus: Body / Pre-Crash1 /. Then select "Diagnostic Code".

    2. Select "Clear" and clear the data.

    3. Recheck for DTC.

      OK
      DTC B2064 is not output.

    NG

    REPLACE SEAT BELT CONTROL ECU Click here

    OK

    END