Ford 2003 Expedition v.3 Manuel d'utilisateur télécharger pdf (Page 170)

SAFETY RESTRAINTS

Personal Safety System

The Personal Safety System provides an improved overall level of frontal

crash protection to front seat occupants and is designed to help further

reduce the risk of air bag-related injuries. The system is able to analyze

different occupant conditions and crash severity before activating the

appropriate safety devices to help better protect a range of occupants in

a variety of frontal crash situations.

Your vehicle’s Personal Safety System consists of:

• Driver and passenger dual-stage air bag supplemental restraints.

• Front safety belts with pretensioners, energy management retractors,

and safety belt usage sensors.

• Driver’s seat position sensor.

• Front crash severity sensor.

• Restraints Control Module (RCM).

• Restraint system warning light and back-up tone.

• The electrical wiring for the air bags, crash sensor(s), safety belt

pretensioners, front safety belt usage sensors, driver seat position

sensor, and indicator lights.

How does the personal safety system work?

The Personal Safety System can adapt the deployment strategy of your

vehicle’s safety devices according to crash severity and occupant

conditions. A collection of crash and occupant sensors provides

information to the Restraints Control Module (RCM). During a crash, the

RCM activates the safety belt pretensioners and/or either one or both

stages of the dual-stage air bag supplemental restraints based on crash

severity and occupant conditions.

The fact that the pretensioners or air bags did not activate for both front

seat occupants in a collision does not mean that something is wrong with

the system. Rather, it means the Personal Safety System determined the

accident conditions (crash severity, belt usage, etc.) were not

appropriate to activate these safety devices. Front air bags are designed

to activate only in frontal and near-frontal collisions, not rollovers,

side-impacts, or rear-impacts unless the collision causes sufficient

longitudinal deceleration.

Seating and Safety Restraints

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Ford 2003 Expedition v.3 Manuel d'utilisateur Page 170