PASSENGER AIR BAG DEACTIVATION (PAD) SYSTEM

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Purpose

•  The passenger air bag deactivation (PAD) system controls the passenger's air bag and pre-tensioner seat belt operation (deployment) based on the passenger seat status signal.

Function

•  The passenger air bag deactivation (PAD) system switches the following air bag modules and pre-tensioner seat belt between operable (deployable) standby and inoperable (non-deployable) based on the passenger seat status signal received from the occupant classification sensor.

Passenger seat status signal

Passenger-side air bag module/ passenger-side side air bag module/ passenger-side pre-tensioner seat belt

PAD indicator

Passenger air bag indicator

PAD ON indicator

PAD OFF indicator
Adult
Operable (deployable)
On
On
Off
Child
Inoperable (non-deployable)
On
Off
On

•  For details on the passenger seat status signal, refer to the [OCCUPANT CLASSIFICATION SENSOR]. (See OCCUPANT CLASSIFICATION SENSOR.)

Construction

•  The passenger air bag deactivation (PAD) system consists of the SAS control module, occupant classification sensor, and PAD indicator.
•  The occupant classification sensor is built into the passenger’s seat.
•  The PAD indicator is built into the display screen of the indicator unit.
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Operation


Passenger seat status signal indicates adult

1.  When the ignition is switched ON (engine off or on), the SAS control module sends (2) a PAD indicator request signal to the instrument cluster based on the passenger seat status signal (adult) (1).

2.  When the ignition is switched ON (engine off or on), the indicator unit turns the transistor on (3).

3.  When the transistor turns on, the passenger air bag indicator turns on (4).

4.  The instrument cluster turns the transistor on (5) based on the PAD indicator request signal.

5.  When the transistor turns on, the PAD ON indicator turns on (6).

6.  The SAS control module operates (deploys) (7) the passenger-side air bag module, passenger-side side air bag module, and passenger-side pre-tensioner seat belt.

7.  When approx. 60 s have elapsed after the PAD ON indicator turns on, it turns off (8).

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Passenger seat status signal indicates child

1.  When the ignition is switched ON (engine off or on), the SAS control module sends (2) a PAD indicator request signal to the instrument cluster based on the passenger seat status signal (child) (1).

2.  When the ignition is switched ON (engine off or on), the indicator unit turns the transistor on (3).

3.  When the transistor turns on, the passenger air bag indicator turns on (4).

4.  The instrument cluster turns the transistor on (5) based on the PAD indicator request signal.

5.  When the transistor turns on, the PAD OFF indicator turns on (6).

6.  The SAS control module inhibits operation (deployment) the passenger-side air bag module, passenger-side side air bag module, and passenger-side pre-tensioner seat belt.

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Fail-safe

•  Not applicable