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 driving support ECU using CAN communication and tightens the seat belt by operating the motor in the front seat outer belt assembly LH.

DTC No. DTC Detection Condition Trouble Area
B2005 Short to B+ in the seat belt motor LH circuit continues for 1 second or more.

  • Front seat outer belt assembly LH

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

  • Seat belt control ECU

WIRING DIAGRAM

A01JAC5E12

INSPECTION PROCEDURE

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.

PROCEDURE


  1. INSPECT FRONT SEAT OUTER BELT ASSEMBLY LH


    1. A01JD8AE35

      Disconnect the front seat outer belt assembly LH connector.

    2. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      R8-1 - Body ground Power switch on (IG) Below 1 V
      R8-2 - Body ground Power switch on (IG) Below 1 V

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


    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.

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

    3. Disconnect the seat belt control ECU connector.

    4. Connect the cable to the negative (-) battery terminal.

    5. Turn the power switch on (IG).

    6. A01J9X3E29
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Front Seat Outer Belt Assembly LH)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      R8-1 - Body ground Power switch on (IG) Below 1 V
      R8-2 - Body ground Power switch on (IG) Below 1 V

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

    8. Reconnect the seat belt control ECU and front seat outer belt assembly LH connectors.

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


    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