SAS CONTROL MODULE [STANDARD DEPLOYMENT CONTROL SYSTEM]

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Purpose

• The SAS control module controls the air bag system.

Function

Air bag system initialization diagnostics function

• When the ignition is switched ON, the SAS control module turns on the air bag/seat belt pre-tensioner system warning light in the instrument cluster for approx. 6 s to indicate that the air bag system is performing initialization diagnostics.

• If there is no malfunction with the air bag system, the air bag/seat belt pre-tensioner system warning light turns off.

Backup power supply function

• The condenser in the SAS control module discharges even if the power supply to the SAS control module has been cut off due to a collision, and the backup power supply function operates the air bag system for a specified period of time.

Vehicle travel conditions detection function

• The SAS control module detects the signals from the following integrated sensors.

• The SAS control module outputs the detection signals from the following sensors and outputs them 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

Roll rate sensor (With roll rate sensor)

•  Vehicle roll angle speed signal

Sensor	Signal
Low-G sensor	• Vehicle longitudinal acceleration speed signal • Vehicle lateral acceleration speed signal
Yaw rate sensor	• Vehicle steering angle speed signal
Roll rate sensor (With roll rate sensor)	• Vehicle roll angle speed signal

Collision detection signal output function

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

• When the signal is received, the each unit performs controls to mediate secondary injuries caused by the vehicle collision.

Related unit

Signal

Reference

•  DSC HU/CM

•  Body control module (BCM)

•  Emergency call unit

Secondary collision reduction signal

(See SECONDARY COLLISION REDUCTION.)

(See POWER DOOR AND FUEL-FILLER LID LOCK SYSTEM [(E)].)

(See EMERGENCY CALL UNIT [(E)].)

•  PCM

•  Instrument cluster

•  Center display

Fuel-cut request signal

(See FUEL INJECTION CONTROL SYSTEM [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (E))].)

(See FUEL INJECTION CONTROL SYSTEM [SKYACTIV-G (WITH CYLINDER DEACTIVATION (E))].)

(See FUEL INJECTION AMOUNT CONTROL [SKYACTIV-D 1.8].)

Related unit	Signal	Reference
• DSC HU/CM • Body control module (BCM) • Emergency call unit	Secondary collision reduction signal	(See SECONDARY COLLISION REDUCTION.) (See POWER DOOR AND FUEL-FILLER LID LOCK SYSTEM [(E)].) (See EMERGENCY CALL UNIT [(E)].)
• PCM • Instrument cluster • Center display	Fuel-cut request signal	(See FUEL INJECTION CONTROL SYSTEM [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (E))].) (See FUEL INJECTION CONTROL SYSTEM [SKYACTIV-G (WITH CYLINDER DEACTIVATION (E))].) (See FUEL INJECTION AMOUNT CONTROL [SKYACTIV-D 1.8].)

Structure/Construction

• The SAS control module is located underneath the rear console.

• The following circuits are integrated with the SAS control module.

― Determination and safing circuit

― Output control circuit

• The following sensors are integrated with SAS control module.

― Crash sensor

― Yaw rate sensor

― Low-G sensor

― Roll rate sensor (With roll rate sensor)

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Operation

• For the SAS control module operation, refer to the [AIR BAG SYSTEM [STANDARD DEPLOYMENT CONTROL SYSTEM]]. (See AIR BAG SYSTEM [STANDARD DEPLOYMENT CONTROL SYSTEM].)