PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:B2005

DTC Code DTC Name
B2005 Short to B+ in Seat Belt Motor LH Circuit

DESCRIPTION

The seat belt control ECU receives information from the distance control ECU using CAN communication and tightens the seat belt by operating the motor in the front seat outer belt assembly LH.

CAUTION:

The pretensioner is built into the front seat outer belt assembly LH. Be sure to follow the correct inspection procedure, as failure to follow the correct procedure (such as inspection of incorrect connectors) may deploy the pretensioner.

DTC No. DTC Detection Condition Trouble Area
B2005

  • Short to B+ in seat belt motor LH circuit continues for 1 second or more

  • Short in seat belt motor LH circuit

  • Front seat outer belt assembly LH

  • Wire harness (Seat belt control ECU - front seat outer belt assembly LH)

  • Seat belt control ECU

WIRING DIAGRAM

A01606CE25

INSPECTION PROCEDURE

Note

When the seat belt control ECU is replaced with a new one, Initialization must be performed Click here.

PROCEDURE


  1. INSPECT FRONT SEAT OUTER BELT ASSEMBLY LH


    1. A015YKBE18

      Disconnect the Q13 connector of the front seat outer belt assembly LH.

    2. Turn the engine switch on (IG).

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      Q13-1 - Body ground Engine switch on (IG) Below 1 V
      Q13-2 - Body ground Engine switch on (IG) Below 1 V

    4. Reconnect the Q13 connector of the front seat outer belt assembly LH.


    NG

    REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT ASSEMBLY LH - SEAT BELT CONTROL ECU)


    1. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      Note

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.

    2. Disconnect the Q13 connector of the front seat outer belt assembly LH.

    3. Disconnect the Q61 connector of the seat belt control ECU.

    4. Connect the cable to the negative battery terminal.

    5. Turn the engine switch on (IG).

    6. A0161U6E14

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      Q13-1 - Body ground Engine switch on (IG) Below 1 V
      Q13-2 - Body ground Engine switch on (IG) Below 1 V

    7. Disconnect the negative (-) battery terminal.

    8. Reconnect the Q61 connector of the seat belt control ECU and Q13 connector of the front seat belt assembly LH.

    9. Connect the negative (-) terminal to the battery.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (FRONT SEAT OUTER BELT ASSEMBLY LH - SEAT BELT CONTROL ECU)

    OK

    REPLACE SEAT BELT CONTROL ECU Click here