• one or more impact and safing
sensors,
• a readiness light and tone,
• driver and front passenger
safety belt buckle pretensioners
• and the electrical wiring which
connects the components.
The diagnostic module monitors its
own internal circuits and the
supplemental air bag electrical
system readiness (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.
A difficulty with the system is
indicated by one or more of the
following:
• The readiness light will either
flash or stay lit.
• The readiness light will not
illuminate immediately after
ignition is turned on.
• A group of five beeps will be
heard. The tone pattern will
repeat periodically until the
problem and light are repaired.
com_determing_operational.01
Seating and safety restraints
57
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