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 collision information from the driving support ECU and skid control ECU via CAN communication and tightens the seat belt by operating the motor inside the front seat outer belt LH.

When DTC B2005 is stored, DTCs B2021, B2031, B2032 and B2035 are not stored.

DTC Code DTC Detection Condition Trouble Area
B2005 During the initial check or with the ignition switch ON, the seat belt motor LH circuit has a power supply short (the voltage at terminals MOL+ and MOL- is 8.5 V or higher) for 1 second or more.

  • Front seat outer belt assembly LH

  • Harness or connector

  • Seat belt control ECU

WIRING DIAGRAM

A0096IJE02

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 activate the pretensioner.

PROCEDURE


  1. CHECK FRONT SEAT OUTER BELT ASSEMBLY LH CIRCUIT


    1. A0094E7E07
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Seat Belt Control ECU)

      Disconnect the G117 ECU connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G117-3 (MOL+) - Body ground Ignition switch ON Below 1 V
      G117-4 (MOL-) - Body ground

    NG

    CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT LH - SEAT BELT CONTROL ECU) Click here

    OK

    REPLACE SEAT BELT CONTROL ECU Click here

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


    1. A0096V8E06
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Seat Outer Belt Assembly LH)

      Disconnect the R3 belt connector.

    2. Disconnect the G117 ECU connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      R3-1 (MOL+) - Body ground Ignition switch ON Below 1 V
      R3-2 (MOL-) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH Click here