Escape 2WD L4-122 2.0L DOHC VIN B SFI (2001)
Multifunction Electronic Control Modules: Description and Operation
Principles of Operation (How Does It Work?)
The Generic Electronic Module (GEM) constantly monitors its subsystems for concerns. If a concern is found in one of the subsystems, the GEM will
record the concern in the form of a Diagnostic Trouble Code (DTC).
The ignition switch position is very important to the GEM function. Erratic or unexpected GEM function can often be traced to problems with these
GEM inputs.
The GEM controls a variety of systems:
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interval rear window wiper
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battery saver
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illuminated entry
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headlamp control
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interior lamp control
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power door locks
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Remote Key Less Entry (RKE)
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accessory delay
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perimeter anti-theft system
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door ajar output control
