On-Vehicle Inspection

WARNING: This page is about a different car, the 2008 Toyota FJ Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT OCCUPANT CLASSIFICATION ECU (VEHICLE NOT INVOLVED IN COLLISION)
1. Perform a diagnostic system check (See DTC CHECK/CLEAR ).
INSPECT OCCUPANT CLASSIFICATION ECU (VEHICLE INVOLVED IN COLLISION)
1. Perform a diagnostic system check (See DTC CHECK/CLEAR ).
2. Even if the airbag has not been deployed, check if there is any damage to the occupant classification ECU.
  If there are any defects as mentioned below, replace the occupant classification ECU with a new one:
  - Cracks, dents or chips on the case.
  - Cracks or other damage to the connector.
  CAUTION: Be sure to follow the correct removal and installation procedures.
  
  Fig 1: Identifying Occupant Classification ECU
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002