1. Turn the ignition switch to OFF.
2. Disconnect the ground cable from battery and wait for at least 60 seconds before starting work.
3. Remove the front outer seat belt. 
4. Remove the nuts and then remove the side airbag sensor.
CAUTION:
Do not separate the side airbag sensor and bracket. Doing so will cause the airbag system malfunction. If the sensor is removed from the bracket, be sure to replace with a new part.
5. Disconnect the airbag connector.