SAS CONTROL MODULE

id081000500200

Purpose

Function

Backup power supply function

•  The backup power supply function enables the condenser to discharge and supply power to assure air bag system operation/deployment properly for a specified time even if the power supply to the SAS control module is cut due to a collision.

Vehicle travel condition detection function

•  The SAS control module detects the vehicle travel conditions based on the signals from the following integrated sensors.

•  The SAS control module sends the vehicle travel conditions detected by the following sensors to the DSC HU/CM via a CAN signal.

Sensor	Signal
Low-G sensor	•  Vehicle longitudinal acceleration speed signal •  Vehicle lateral acceleration speed signal
Yaw rate sensor	•  Vehicle steering angle speed signal

Collision detection signal output function

•  The air bag system output signals to the following units when it determines that it necessary for the SAS control module to operate (deploy) the air bag system.

•  When each unit receives the signal, they perform controls to mediate damage from the vehicle collision.

Related unit	Signal	Reference
•  DSC HU/CM •  Front body control module (FBCM) •  Mazda ERA-GLONASS control module	Secondary collision reduction signal	(See SECONDARY COLLISION REDUCTION (SCR).) (See MAZDA ERA-GLONASS.)
•  PCM •  Instrument cluster •  Center display	Fuel-cut request signal	(See FUEL INJECTION CONTROL SYSTEM [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See ENTERTAINMENT SYSTEM [WITH CENTER DISPLAY].)

Construction

•  SAS control module installed under the rear console.

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―  Determination and safing circuit

―  Output control circuit

―  Crash sensor

―  Yaw rate sensor

―  Low-G sensor

Operation

Fail-safe