Ford 2004 Focus v.1 Manuel d'utilisateur télécharger pdf (Page 77)

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 conditions. A

collection of crash sensors provides information to the Restraints Control

Module (RCM). During a crash, the RCM activates the safety belt

pretensioners and/or either none, one, or both stages of the dual-stage

air bag supplemental restraints based on crash severity and 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 and

pretensioners 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.

Driver and passenger dual-stage air bag supplemental restraints

The dual-stage air bags offer the capability to tailor the level of air bag

inflation energy. A lower, less forceful energy level is provided for more

common, moderate-severity impacts. A higher energy level is used for

the most severe impacts. Refer to Air bag Supplemental Restraints

section in this chapter.

Front crash severity sensor

The front crash severity sensor enhances the ability to detect the

severity of an impact. Positioned up front, it provides valuable

information early in the crash event on the severity of the impact. This

allows your Personal Safety System to distinguish between different

levels of crash severity and modify the deployment strategy of the

dual-stage air bags and safety belt pretensioners.

Driver’s seat position sensor

The driver’s seat position sensor allows your Personal Safety System to

tailor the deployment level of the driver dual-stage air bag based on seat

position. The system is designed to help protect smaller drivers sitting

close to the driver air bag by providing a lower air bag output level.

Front safety belt usage sensors

The front safety belt usage sensors detect whether or not the driver and

front outboard passenger safety belts are fastened. This information

allows your Personal Safety System to tailor the air bag deployment and

safety belt pretensioner activation depending upon safety belt usage.

Refer to Safety Belt section in this chapter.

2004 Focus (foc)

Owners Guide (post-2002-fmt)

USA English (fus)

Seating and Safety Restraints

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Ford 2004 Focus v.1 Manuel d'utilisateur Page 77

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