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Occupant Classification Ecu: Replacement

WARNING: This page is about a different car, the 2005 Lexus RX 330. However, it is still accessible from the selected car via links, so may be relevant.
  1. (SEE  PRECAUTION  ) 
  2. DISCONNECT BATTERY NEGATIVE TERMINAL (SEE  PRECAUTION  ) 
  3. REMOVE FRONT RH SEAT ASSY (SEE  OVERHAUL  ) 
  4. REMOVE OCCUPANT CLASSIFICATION ECU 
    1. Using a screwdriver, remove the occupant classification ECU.
    2. Disconnect the connectors of the occupant classification ECU.
      Fig 1: Removing Occupant Classification ECU Using screwdriver
      G03012785Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSTALL OCCUPANT CLASSIFICATION ECU 
    1. Check that the ignition switch is off.
    2. Check that the battery negative (-) terminal is disconnected.
      NOTE: Do not start the operation for 90 seconds after removing the terminal.
    3. Connect the connectors of the occupant classification ECU.
    4. Install the occupant classification ECU.
      NOTE:
      • If the occupant classification ECU has been dropped, or there are cracks, dents or other defects in the case, bracket or connector, replace the occupant classification ECU with a new one.
      • When installing the occupant classification ECU, take care that the SRS wiring does not interfere with other parts and is not pinched between other parts.
  6. INSTALL FRONT RH SEAT ASSY (SEE  OVERHAUL  ) 
  7. OCCUPANT CLASSIFICATION ECU INITIALIZATION (SEE  INITIALIZATION  ) 
  8. INSPECT SRS WARNING LIGHT (SEE  DIAGNOSIS SYSTEM  ) 
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