Ranger 2WD L4-2.3L VIN D (2001)
Multifunction Electronic Control Modules: Description and Operation
Principles of Operation (How Does It Work?)
Central Security Module
The central security module controls the remote keyless entry system and the computer-operated lock unlock/panic system.
Generic Electronic Module (Gem)
NOTE: Upon installation of a new Generic Electronic Module (GEM), the module must be reconfigured. Refer to Module Communications Network
(Information Bus) prior to GEM removal.
The GEM receives inputs and delivers outputs to a majority of the electronically-controlled features of the vehicle. The GEM constantly monitors the
systems under its control and reports a concern in the form of a Diagnostic Trouble Code (DTC). The DTC can be retrieved with a diagnostic tool
through the ISO 9141 communication network. The GEM controls the following features:
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front wiper and washer
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warning chime
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battery saver
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illuminated entry and interior lighting
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driver one-touch down power window (optional)
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battery saver relay
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door ajar warning indicator lamp
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safety belt warning indicator lamp
