F 150 4WD Pickup V8-5.4L SOHC VIN 3 (1999)
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Driver safety belt switch (grounded when not fastened, open circuit when fastened).
Door Ajar Warning Chime
The door ajar warning tone warns that a door has become ajar. The door ajar warning tone is a single tone with the duration of one second. The
tone will sound when the driver or passenger door initially becomes ajar while the ignition switch is in the RUN position.
The door ajar inputs are:
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Ignition switch RUN position (battery potential on RUN and RUN/ACC inputs).
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Door ajar switches (open circuit with door closed, grounded with door ajar).
Key-In-Ignition Warning Chime
The key-in-ignition warning chime warns that key is still in the ignition when the driver door is ajar. The key-in-ignition warning chime will sound
when:
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Generic Electronic Module (GEM)/Central Timer Module (CTM): Driver door is ajar, the ignition switch is in the OFF/LOCK or ACC
position and the key is in the ignition.
The key-in-ignition warning chime will stop sounding when:
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The driver door is closed.
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The key is removed from the ignition.
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Ignition switch is switched to the RUN position.
The key-in-ignition warning chime inputs are:
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Ignition switch RUN position (battery potential on RUN and RUN/ACC inputs).
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Ignition switch ACC position (battery potential on RUN/ACC input only).
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Key-in-ignition switch (grounded with key-in-ignition, open circuit key-out).
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LH door ajar switch (open circuit with door closed, grounded with door ajar).
Headlamps Warning Chime
The headlamps warning chime warns that the headlamps are on when all the following conditions are met:
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The driver door is ajar.
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The headlamp switch position is in the PARK or HEAD position.
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The ignition switch state is in the OFF/LOCK position.
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Key-out.
The headlamps warning chime will stop sounding when any one of the conditions above are removed.
The headlamps warning chime inputs are:
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Ignition switch OFF/LOCK position (open circuit on all ignition inputs).
Headlamp switch (battery potential in PARK or HEAD position, open circuit when in OFF position).
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Driver door ajar switch (open circuit with door closed, grounded with door ajar).
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Key-in-ignition switch (grounded with key-in-ignition, open circuit with key-out).
Air Bag Redundant Chime
The Restraint Control Module (RCM) chime warns that the air bag warning indicator is inoperative or active fault is present within the air bag
system. The audible warning format will consist off five sets of tones, in one second increments.
