Occupant Classification Ecu: Installation

WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.

INSTALL OCCUPANT CLASSIFICATION ECU
1. Check that the ignition switch is off.
2. Check that the negative battery (-) terminal is disconnected.
  CAUTION: After disconnecting the negative battery terminal, wait for at least 90 seconds before starting the operation.
3. Connect the 2 connectors to the occupant classification ECU.
4. Install the occupant classification ECU.
  NOTE:
  - If the occupant classification ECU has been dropped, or there are any cracks, dents or other defects in the case or connector, replace it with a new one.
  - When installing the occupant classification ECU, be careful that the SRS wiring does not interfere with other parts and that it is not pinched between other parts.
  Fig 1: Identifying Occupant Classification ECU
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL FRONT SEAT ASSEMBLY (See INSTALLATION )
CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
PERFORM INITIALIZATION
1. Perform initialization (See INITIALIZATION ).
  HINT:
  
  Some systems need initialization when disconnecting the cable from the negative battery terminal.
INSPECT CHECK POWER SEAT FUNCTION
INSPECT SEAT HEATER OPERATION
INSPECT SRS WARNING LIGHT
1. Inspect the SRS warning light (See DIAGNOSIS SYSTEM ).