Subaru 2002 Impreza Service Manual page 387

CONSTRUCTION
Airbag System
D: AIRBAG SENSOR
The safety sensor and electric sensor are incorporated into the airbag control module and the side
airbag sensors.
The safety sensor is also a pendulum type sensor. If the sensor receives a frontal or side impact
exceeding a certain limit, the mass in the sensor moves in the direction opposite to the impact
direction to turn the switch ON.
The electric sensor consists of a semiconductor type sensor which senses the deceleration
caused by collision in terms of change in the electrical resistance of the impact sensing circuit.
SAFETY SENSOR
Switch &ntacts
ELECTRIC SENSOR
NF0230
AB-7