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 (multiplex network body ECU) through CAN communication.

The seat belt control ECU receives vehicle model information from the main body ECU (multiplex network 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 the initial check is running, the steering wheel position information is not received for 3 seconds or more.

  • Main body ECU (multiplex network body ECU)

  • CAN communication system

  • Seat belt control ECU

INSPECTION PROCEDURE

Note

If the main body ECU (multiplex network body ECU) is replaced, refer to the Service Bulletin.

PROCEDURE


  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM)


    1. for LHD:


      1. Select "Bus Check" from the "System Select" Click here.

    2. for RHD:


      1. Select "Bus Check" from the "System Select" Click here.

    3. 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 Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

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


    1. Clear the DTCs Click here.

    2. Check for DTCs. Click here.


    NG

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here

  3. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)


    1. Replace the main body ECU (multiplex network body ECU) with a new one Click here.


    NEXT

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


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.


    NG

    REPLACE SEAT BELT CONTROL ECU Click here

    OK

    END (MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] WAS DEFECTIVE)