Occupant Detection System: Precautions

WARNING: This page is about a different car, the 2019 Subaru BRZ. However, it is still accessible from the selected car via links, so may be relevant.

Precautions for replacing the occupant detection system
1. The occupant detection control module and the occupant detection sensor of the occupant detection system (only for the passenger's seat) are fixed to the seat cushion frame. Never remove the occupant detection control module or the occupant detection sensor from the seat cushion frame.
2. Do not replace the seat cushion pad by itself. The seat cushion pad & frame ASSY must be replaced as a whole. The seat cushion pad and the cushion frame are adjusted as an assembly at the time of manufacturing. If they are combined with those of other vehicles or assemblies, the occupant detection system may not operate properly.
3. When removing the seat cushion cover, be sure to replace the hang wire on the seat cushion side with new one.
4. Never connect the battery in reverse polarity. Reverse connection may instantly damage the occupant detection system.
5. While the engine is running, do not disconnect the battery cable. A large counter electromotive force will be generated in the generator, and this voltage may damage the electronic parts such as an occupant detection control module.
6. Before disconnecting the connectors of the sensors and the control module, make sure to turn the ignition switch to OFF, and wait for 60 seconds or more. Otherwise, it may damage the occupant detection control module.
7. All parts related to the occupant detection system are precision parts. Do not to drop these parts.
  CAUTION:
  - Do not use electronic test instrument for the circuit of airbag system wiring harness and connectors.
  - When servicing the occupant detection system, be careful not to damage the wiring harness of airbag system.
  - When repairing the occupant detection system, refer to the PRECAUTIONS for the airbag system.