PRE-CRASH SAFETY SYSTEM, Diagnostic DTC:B2007

DTC Code DTC Name
B2007 Open in Seat Belt Motor LH Circuit

DESCRIPTION

The seat belt control ECU receives information from the distance control ECU using CAN communication and tightens the seat belt by operating the motor in the front seat outer belt assembly LH.

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.

DTC No. DTC Detection Condition Trouble Area
B2007

  • Open in seat belt motor LH circuit continues for 1 second or more

  • Front seat outer assembly LH

  • Wire harness (seat belt control ECU - front seat outer belt assembly LH)

  • Seat belt control ECU

WIRING DIAGRAM

A01606CE04

INSPECTION PROCEDURE

Note

When the seat belt control ECU is replaced with a new one, Initialization must be performed Click here.

PROCEDURE


  1. INSPECT FRONT SEAT OUTER BELT ASSEMBLY LH


    1. A015YKBE06

      Disconnect the connector Q13 of the front seat outer belt assembly LH.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q13-1 - Q13-2 Always Below 1 MΩ

    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. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      Note

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.

    2. A01629QE02

      Disconnect the Q38 connector of the seat belt control ECU.

    3. Using SST, connect Q13-1 and Q13-2 of the wire harness connector for the front seat outer belt assembly LH.

      Note

      Do not forcibly insert SST into the terminals of the connector.

      SST
      09843-18040

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      Q38-2 (MOL+) - Q38-11 (MOL-) Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE SEAT BELT CONTROL ECU Click here