System Description

GENERAL

The Supplemental Restraint System (SRS AIRBAG) is designed to supplement the seat belts to help reduce the risk or severity of injury to the driver and passenger by activating and deploying the driver, passenger and side airbags well as the belt pretensioner in certain frontal or side collisions.

The SRS (Airbag) consists of : a driver airbag module located in the center of the steering wheel, which contains a folded cushion and an inflator unit : a passenger airbag module located in the passenger side crash pad which contains a folded cushion together with an inflator unit side airbag modules located in the driver and passenger seat which contain folded cushions and inflator units; SRSCM located on the floor center console core which monitors the system; an accelerometer which senses vehicle deceleration; a spring interconnection (clock spring) located within the steering column; system wiring and wiring connectors; and a knee bolster located under the steering column. The impact sensing function of the SRSCM is carried out by the electronic accelerometer that continuously measures the vehicle's acceleration and delivers a corresponding signal through an amplifying and filtering circuit to the microprocessor. Deployment of the airbag is designed to occur in frontal or near-frontal side impacts of moderate to severe force.

Only authorized service personnel should work on or around SRS components. Those service personnel should read this instruction carefully before doing any such work. Extreme care must be used when servicing the SRS to avoid injury to the service personnel (by inadvertent deployment of the airbag) or the driver (by rendering the SRS inoperative).

SRSCM (SUPPLEMENTAL RESTRAINTS SYSTEM CONTROL MODULE)

INFLATOR MODULE (DAB, PAB, SAB)
DAB (Driver airbag), PAB (Passenger airbag) module, DSAB (Driver side airbag), PSAB (Passenger side airbag) all consist of an inflator and cushion. The initiator (a gas generator igniting device) is part the inflator. When the vehicle is in a frontal or side crash of sufficient force to close the sensor of the SRSCM, current flows through the deployment loop. This current ignites the material and inflates the airbag.

1. When removing the airbag module or handling a new airbag module, it should be placed with the pad top surface facing up. In this case, the twin-lock type connector lock lever should be in the locked state and care should be taken to place it so the connector will not be damaged. Do not store a steering wheel pad on top of another one. (Storing the pad with its metallic surface up may lead to a serious accident if the airbag should inflate accidentally.)
2. Never measure the resistance of the airbag squib. (This may cause the airbag to deploy, which is very dangerous.)
3. Store the airbag module where the ambient temperature remains below 93°C (200°F), without high humidity and away from electrical noise.
4. During electric welding, disconnect the airbag under the steering column near the MULTI-FUNCTION SWITCH connector before starting work.