FORD 1998 Expedition - Manual (Page 82)

If the air bag is inflated,
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 air bag
modules (which include the
inflators and air bags),
• one or more impact and safing
sensors,
• a readiness light and tone
• and the electrical wiring which
connects the components.
The diagnostic module monitors its
own internal circuits and the
supplemental air bag electrical
system warning (including the
impact sensors), the system wiring,
the air bag system readiness light,
the air bag back up power and the
air bag ignitors.
Determining if the system is
operational
The SRS uses a readiness light in
the instrument cluster or a tone to
indicate the condition of the
system. Refer to the Air bag
readiness section in the
Instrumentation chapter. Routine
maintenance of the air bag is not
required.
Seating and safety restraints
82