Mazda 2007 CX-9, Service Highlights

Page: 360 / 614

AIR BAG SYSTEM
08-10–8
Rollover Control
1. When the vehicle starts to rollover, the angular rate sensor in the SAS control module detects the vehicle rolling
angle speed, and the low-G sensor in the SAS control module detects lateral and vertical accelerations.
2. When the angular speed detected by the angular rate sensor exceeds the specification, an initial rollover
condition is determined and the operational circuit calculates the rolling angle based on the angular speed
detected by the angular rate sensor.
3. When the rollover control operation conditions of angular speed and rolling angle are met and the vehicle is
determined to be in a rollover condition based on the acceleration detected by the low-G sensor, an electronic
signal is output to the output signal circuit.
4. The output signal circuit completes an ignition circuit, and an operation (deployment) signal is sent to the air
bag module and pre-tensioner seat belts indicated in the table below.
×
:Possible
-:Not possible
Position
Determined
result
Front seat
belt
Front air bag
module operation
(deployment)
Side air bag
module operation
(deployment)
Curtain air bag
module operation
(deployment)
Pre-tensioner seat
belt operation
(deployment)
Driver
side
-
Fastened - -
× ×
Unfastened - -
× ×
Passeng
er side
Adult
Fastened - -
× ×
Unfastened - -
× ×
Child
(including
child-restraint
seat) Fastened - -
×
-
Unfastened - -
×
-
Empty
Fastened - -
×
-
Unfastened - -
×
-
SAS CONTROL MODULE
LOW-G
SENSOR
CURTAIN AIR BAG
MODULE
PRE-TENSIONER
SEAT BELT
OUTPUT
SIGNAL
CIRCUIT
ANGULAR
RATE
SENSOR
ANGULAR
SPEED
ACCELERATION
OPERATIONAL
CIRCUIT
ANGULAR
SPEED
ROLLING
ANGLE
LATERAL
ACCELERATION
VERTICAL
ACCELERATION
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