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PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:B2064

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DTC Code DTC Name
B2064 Vehicle Type Signal Malfunction
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DESCRIPTION

The seat belt control ECU is connected to the main body ECU (multiplex network body ECU) using 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 is for the driver seat or the passenger seat.

DTC B2064 is stored when CAN communication with the main body ECU (multiplex network 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).

  • CAN communication system

  • Seat belt control ECU

  • Main body ECU (multiplex network body ECU)
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CAUTION / NOTICE / HINT

Tip:

This circuit uses CAN communication. Therefore, be sure to check that the CAN communication system is normal before performing inspection.

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PROCEDURE


  1. Click here

    CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM)


    1. Clear the DTCs (Click here).

    2. Recheck for DTCs.

      OK
      CAN communication system DTCs are not output.

  2. Click here

    CHECK DTC OUTPUT (PRE-CRASH SAFETY SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Pre-Crash / Trouble Codes.

    5. Clear the DTCs (Click here).

    6. Recheck for DTCs.

      OK
      DTC B2064 is not output.

  3. Click here

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)


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


  4. Click here

    CHECK DTC OUTPUT (PRE-CRASH SAFETY SYSTEM)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Pre-Crash / Trouble Codes.

    5. Clear the DTCs (Click here).

    6. Recheck for DTCs.

      OK
      DTC B2064 is not output.

    • OK

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

    • NG

      REPLACE SEAT BELT CONTROL ECU (Click here)