PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:B2001, B2006

DTC Code DTC Name
B2001 Short to GND in Seat Belt Motor RH Circuit
B2006 Short to GND in Seat Belt Motor LH Circuit

DESCRIPTION

The seat belt control ECU receives information from the master cylinder solenoid (skid control ECU) via the CAN communication line and tightens the seat belt by operating the motor in the front seat outer belt assembly RH or LH.

DTC Code DTC Detection Condition Trouble Area
B2001

  • Short to ground in seat belt motor RH circuit continues for 1 second or more.

  • Short in seat belt motor RH circuit.

  • Front seat outer belt assembly RH

  • Harness or connector

  • Seat belt control ECU
B2006

  • Short to ground 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

  • Harness or connector

  • Seat belt control ECU

WIRING DIAGRAM

A0156RTE01
A0156RTE02

INSPECTION PROCEDURE

CAUTION:

The pretensioner is built into the front seat outer belt assembly. 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. CHECK SEAT BELT CONTROL ECU


    1. A015DJ4E01

      Disconnect the E41 seat belt control ECU connector.

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

      Standard Resistance
      for LH
      Tester Connection Condition Specified Condition
      E41-3 (MOL+) - Body ground Always 1 MΩ or higher
      E41-4 (MOL-) - Body ground
      for RH
      Tester Connection Condition Specified Condition
      E41-1 (MOR-) - Body ground Always 1 MΩ or higher
      E41-2 (MOR+) - Body ground
      Result
      Result Proceed to

      OK

      (for LHD)

      		 A

      OK

      (for RHD)

      		 B
      NG C

    B

    REPLACE SEAT BELT CONTROL ECU Click here

    C

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

    A

    REPLACE SEAT BELT CONTROL ECU Click here

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


    1. A01567CE02

      Disconnect the E41 seat belt control ECU connector.

    2. Disconnect the K11*1 or L5*2 front seat outer belt connector.

      Tech Tips


      • *1: for LH

      • *2: for RH

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

      Standard Resistance
      for LH
      Tester Connection Condition Specified Condition
      K11-1 (MOL+) - Body ground Always 1 MΩ or higher
      K11-2 (MOL-) - Body ground
      for RH
      Tester Connection Condition Specified Condition
      L5-1 (MOR+) - Body ground Always 1 MΩ or higher
      L5-2 (MOR-) - Body ground
      Result
      Result Proceed to

      OK

      (for DTC B2001)

      		 A

      OK

      (for DTC B2006)

      		 B
      NG C

    B

    REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH Click here