Ranger 4WD V6-3.0L VIN V Flex Fuel (1999)
General Module: Description and Operation
The multifunction modules consist of the following:
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Generic Electronic Module (GEM)/Central Timer Module (CTM)
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Remote Anti-theft Personality (RAP) module
The Remote Anti-theft Personality (RAP) module controls the keyless entry, and computer operated locks systems.
The GEM/CTM controls the following features:
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Wiper/washer (front/rear)
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Warning chime
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Battery saver
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Illuminated entry and courtesy lamps
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Driver one touch down power window (GEM only)
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Accessory delay
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4 wheel drive (GEM only)
The Generic Electronic Module (GEM) and the Central Timer Module (CTM) are on the ISO 9141 network. Only one GEM or one CTM will be on a
vehicle. The CTM will show up as a GEM on the NGS Tester. The GEM is equipped on vehicles with 4-wheel drive or vehicles with power windows.
The CTM is equipped on vehicles with 2-wheel drive and vehicles without power windows. The GEM controls additional functions that include:
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Speed dependent windshield wipers.
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4-wheel shift on the fly
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One touch down power window.
