F 150 2WD Pickup V8-5.4L Prop SOHC VIN Z (1998)
Audible Warning Device Control Module: Description and Operation
The Generic Electronic Module (GEM) and Central Timer Module (CTM) control the following warnings and chimes:
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Driver safety belt not fastened (warning lamp and repetitive chime).
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Key-in-ignition (repetitive chime).
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Headlamp-on warning (repetitive chime).
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Door ajar (warning lamp and single tone).
The following four distinct chime rates are used to indicate warning:
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Safety belt warning chime is one chime per second.
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Key-in-ignition warning is two chimes per second.
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Headlamp-on warning is four chimes per second.
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Door ajar warning is a single chime.
Safety Belt Warning Chime
The safety belt warning chime warns that the safety belt is not fastened. The safety belt warning chime will sound when the driver safety belt is not
fastened when the ignition switch is turned from the OFF/LOCK or ACC to the RUN or START position.
