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 assembly 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 or connector (seat belt control ECU - front seat outer belt assembly LH)

  • Seat belt control ECU

WIRING DIAGRAM

A0042EDE04

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. A004239E06
      Text in Illustration
      *a

      Component without harness connected

      (Front Seat Outer Belt Assembly LH)

      Disconnect the R8 front seat outer belt assembly LH connector.

      Tech Tips

      Do not remove the front seat outer belt assembly LH.

    2. Turn the power switch on (IG).

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

      Standard Voltage
      Tester Connection 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

      CAUTION:

      Do not check a wrong 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. A004157E04
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Seat Belt Control ECU)

      Disconnect the L3 seat belt control ECU 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 Condition Specified Condition
      L3-3 (MOL+) - Body ground Power switch on (IG) Below 1 V
      L3-4 (MOL-) - Body ground Power switch on (IG) Below 1 V

    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