Side Air Bag Sensor System - Mazda CX-9 2007 Service Highlights

Side Air Bag System
1. During a lateral collision to the vehicle, the crash sensors in the side air bag sensor No.1, side air bag sensor
No.2 and SAS control module detect the collision.
2. The level of impact detected by the crash sensor in the side air bag sensor is converted to an electrical signal
and sent to the SAS control module through the signal amplification circuit.
3. Simultaneously, the SAS control module crash sensor converts the level of impact detected to an electrical
signal.
4. The SAS control module processes the calculations for the three electrical signals at the output control circuit
and compares the value to a preset value.
5. The output control circuit determines the level of impact to the vehicle by the value from the crash sensors,
completes a side air bag module and curtain air bag module ignition circuit, and sends the deployment signal to
the air bag modules.

Side Air Bag Sensor System

• To improve detection of an impact to the side of the vehicle, side air bag sensors have been placed in the front
and rear (No.1: Front, No.2: Rear)
AIR BAG SYSTEM
SIDE AIR BAG
SENSOR NO. 2
SAS CONTROL MODULE
CRASH
SENSOR
JUDGEMENT AND
SAFING CIRCUIT
OUT CONTROL CIRCUIT
CURTAIN AIR BAG
MODULE
SIDE AIR BAG
SENSOR NO. 1
CRASH CRASH
SENSOR SENSOR
SIDE AIR BAG
MODULE
SIDE AIR BAG
SENSOR NO.2
SIDE AIR BAG
SENSOR NO.1
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