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DTC B2002: Open in Seat Belt Motor RH Circuit: Procedure

  1. INSPECT FRONT SEAT OUTER BELT ASSEMBLY RH 
    1. Disconnect the front seat outer belt assembly RH connector.
      Fig 1: Inspecting Front Seat Outer Belt Assembly RH
      GTY340274Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      S24-1 - S24-2 Always Below 20 Ω
    3. Reconnect the front seat outer belt assembly RH connector.

    NG → See step   4 

    OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (FRONT SEAT OUTER BELT ASSEMBLY RH - SEAT BELT CONTROL ECU) 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
      WARNING:

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

      Fig 2: Checking S24 & L133 Connector Terminals
      GTY328109Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the front seat outer belt assembly RH connector.
    3. Disconnect the seat belt control ECU connector.
    4. Using a service wire, connect 1 and 2 of the connector on the front seat outer belt assembly RH.
      NOTE:

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

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      L133-1 (MOR-) - L133-2 (MOR+) Always Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Front Seat Outer Belt Assembly RH)
      *b Front view of wire harness connector
      (to Seat Belt Control ECU)
    6. Disconnect the service wire from the front seat outer belt assembly RH connector.
    7. Reconnect the seat belt control ECU and front seat outer belt assembly RH connectors.
    8. Connect the cable to the negative (-) auxiliary battery terminal.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (FRONT SEAT OUTER BELT ASSEMBLY RH - SEAT BELT CONTROL ECU) 

    OK → See step   3 

  3. REPLACE SEAT BELT CONTROL ECU. Refer to  REMOVAL 
  4. REPLACE FRONT SEAT OUTER BELT ASSEMBLY RH. Refer to  REMOVAL