PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:B2002, B2007

DTC Code DTC Name
B2002 Open in Seat Belt Motor RH Circuit
B2007 Open 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
B2002 Open in the seat belt motor RH circuit continues for 1 second or more.

  • Front seat outer belt assembly RH

  • Harness or connector

  • Seat belt control ECU
B2007 Open in the seat belt motor LH circuit continues for 1 second or more.

  • Front seat outer belt assembly LH

  • Harness or connector

  • Seat belt control ECU

WIRING DIAGRAM

A01X09EE09
for RH
*a Front Seat Outer Belt Assembly RH (Seat Belt Motor RH)
*b Seat Belt Control ECU
A01X09EE04
for LH
*a Front Seat Outer Belt Assembly LH (Seat Belt Motor LH)
*b Seat Belt Control ECU

CAUTION / NOTICE / HINT

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. INSPECT SEAT BELT CONTROL ECU


    1. A01X16BE02

      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+) - E41-4 (MOL-) Always Below 100 Ω
      for RH
      Tester Connection Condition Specified Condition
      E41-1 (MOR-) - E41-2 (MOR+) Always Below 100 Ω
      Result
      Result Proceed to

      OK

      (for LHD)

      		 A

      OK

      (for RHD)

      		 B
      NG C

    A

    REPLACE SEAT BELT CONTROL ECU Click here

    B

    REPLACE SEAT BELT CONTROL ECU Click here

    C

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


    1. Disconnect the E41 seat belt control ECU connector.

      A01X8TTE01

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

      Tech Tips


      • *1: for LH

      • *2: for RH

    3. Using a service wire, connect K11-1*1 and K11-2*1 or L5-1*2 and L5-2*2 of the connector on the front seat outer belt assembly.

      Note

      Do not forcibly insert the service wire into the terminals of the connector.

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

      Standard Resistance
      for LH
      Tester Connection Condition Specified Condition
      E41-3 (MOL+) - E41-4 (MOL-) Always Below 1 Ω
      for RH
      Tester Connection Condition Specified Condition
      E41-1 (MOR-) - E41-2 (MOR+) Always Below 1 Ω
      Result
      Result Proceed to

      OK

      (for DTC B2002)

      		 A

      OK

      (for DTC B2007)

      		 B
      NG C

    A

    REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH Click here

    B

    REPLACE FRONT SEAT OUTER BELT ASSEMBLY LH Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR