B4000 SE Regular Cab 4WD V6-4.0L OHV (1999)
Audible Warning Device: Description and Operation
NOTE: The generic electronic module/central timer module (GEM/CTM) are connected to the ISO link and are diagnosed through the data link
connector (DLC) with the NGS Tester.
There are four warning chimes and lamps the GEM/CTM controls:
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Headlamps operating without the ignition on (chime only).
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Door ajar (chime and lamp).
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Key-in-ignition (chime only).
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Driver seat belt warning (chime and lamp).
When the ignition switch is turned to ON or START from OFF or ACC, the chime will sound for six seconds or until the seat belt is buckled.
The seat belt warning indicator lamp will turn on for 60 seconds or until the driver seat belt is fastened. Both the chime and the lamp turn on at the same
time.
If the seat belt is buckled while the ignition switch is turned to ON or START, from OFF or ACC, neither the chime nor lamp will be activated.
Anytime the ignition switch is changed to ON from START while the seat belt warning indicator is activated, the seat belt warning indicator will remain
activated until either the timing sequence has been executed or the seat belt is buckled.
When at least one door is ajar and the key is in the ON position, the door ajar lamp is activated and remains on until all doors are closed. A warning tone
will sound once any time the key is in the ignition switch and any door is open.
The key-in-ignition warning will sound when the driver side front door is opened with the key in the ignition switch and the ignition switch in OFF or
ACC. It will continue to sound until the key is removed, the front door is closed, or the ignition switch is in ON or START.
The headlamp-on reminder chime will be activated if the headlamps or parking lamps are on, the key is not in the ignition switch, and the driver door is
opened.
