PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:B2000, B2005

DTC Code DTC Name
B2000 Short to B+ in Seat Belt Motor RH Circuit
B2005 Short to B+ 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
B2000

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

  • Short in the seat belt motor RH circuit.

  • Front seat outer belt assembly RH

  • Harness or connector

  • Seat belt control ECU
B2005

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

  • Short in the seat belt motor LH circuit.

  • Front seat outer belt assembly LH

  • Harness or connector

  • Seat belt control ECU

WIRING DIAGRAM

A01EOJJE01
A01EOJJE02

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. A01EPJXE01

      Disconnect the E41 seat belt control ECU connector.

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

      Standard Voltage
      for LH
      Tester Connection Switch Condition Specified Condition
      E41-3 (MOL+) - Body ground Engine switch on (IG) Below 1 V
      E41-4 (MOL-) - Body ground
      for RH
      Tester Connection Switch Condition Specified Condition
      E41-1 (MOR-) - Body ground Engine switch on (IG) Below 1 V
      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. A01EQ7AE02

      Disconnect the E41 seat belt control ECU connector.

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


      • *1: for LH

      • *2: for RH

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

      Standard Voltage
      for LH
      Tester Connection Switch Condition Specified Condition
      K11-1 (MOL+) - Body ground Engine switch on (IG) Below 1 V
      K11-2 (MOL-) - Body ground
      for RH
      Tester Connection Switch Condition Specified Condition
      L5-1 (MOR+) - Body ground Engine switch on (IG) Below 1 V
      L5-2 (MOR-) - Body ground
      Result
      Result Proceed to

      OK

      (for DTC B2000)

      		 A

      OK

      (for DTC B2005)

      		 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