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WARNING: Several air bag system components get hot after
inflation. Do not touch them after inflation.
WARNING: If the air bag has deployed, the air bag will not
function again and must be replaced immediately. If the air
bag is not replaced, the unrepaired area will increase the risk of injury
in a collision.
The SRS consists of:
• driver and passenger airbag modules (which include the inflators and
airbags).
• side airbags. Refer to Seat-mounted side airbag system later in this
chapter.
• side air curtain system. Refer to Side air curtain system later in this
chapter.
• safety belt pretensioners
• one or more impact and safing sensors.
• Front passenger sensing system. Refer to Front passenger sensing
system later in this chapter.
• “Passenger airbag off” or “pass airbag off” indicator lamp. Refer to
Front passenger sensing system later in this chapter.
• a readiness light and tone.
• diagnostic module.
• and the electrical wiring which connects the components.
The diagnostic module monitors its own internal circuits and the
supplemental airbag electrical system wiring (including the impact
sensors), the system wiring, the airbag system readiness light, the airbag
back up power and the airbag ignitors.
Front passenger sensing system
The front passenger sensing system is designed to meet the regulatory
requirements of Federal Motor Vehicle Safety Standard (FMVSS) 208
and is designed to disable (will not inflate) the front passenger’s frontal
airbag under certain conditions.
The front passenger sensing system works with sensors that are part of
the front passenger’s seat and safety belt. The sensors are designed to
2009 Focus (foc)
Owners Guide, 2nd Printing
USA (fus)
Seating and Safety Restraints
106