Ranger 2WD L4-153 2.5L SOHC VIN C SFI (1998)
The GEM/CTM controls the interior lamps illuminated entry function with the interior lamp relay. The relay is activated by applying ground to the
relay coil through C283-12, circuit 1008 (LG/O), and is deactivated by removing the ground.
The RAP module sends a signal to the GEM on the illuminated entry request circuit to indicate a request to turn the illuminated entry feature ON or
OFF.
The GEM illuminates the interior lamps when an unlock signal is received from the RAP module. The illuminated entry feature will be canceled when
any of the following conditions are met:
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25 seconds have elapsed since the illuminated entry feature was activated and the interior lamp control is not activated.
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The GEM receives a request from the RAP module (remote transmitter lock button pressed) and the courtesy lamp control is not activated.
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The ignition is in the RUN or START position and the interior lamp control is not activated.
The illuminated entry inputs are:
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Door open warning lamp switch (grounded when the handle is lifted; an open circuit when the handle is released).
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Ignition switch in the key-in, ACCY and RUN position.
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RAP illuminated entry request.
The GEM/CTM sleep mode outputs are:
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None (All circuits are deactivated during sleep mode).
If a change in any of the above inputs occur while the GEM/CTM is asleep, the GEM/CTM will wake up and monitor all of its inputs, and will have
the ability to activate any of its outputs.
The GEM module provides temporary power to the power windows, the rear wiper (for parking of the rear wiper off the liftgate glass), and the
message center for ten minutes after the ignition switch is moved from the RUN to OFF position. If, during this ten-minute period, either front door is
opened, the delayed accessory relay will be de-energized.
The GEM controls the one-touch down window feature. When the power switch for the driver window control is held down (between 0.04 and 0.4
second) and then released with the ignition switch in RUN OR ACC, the driver window will automatically move to its full down position.
Only the driver window has this feature. Holding the driver window switch down longer allows the operator to stop the window as soon as the switch
is released. For additional power window information, refer to Windows and Glass. See: Windows and Glass
To activate the two-step unlock system the GEM requires that there must be two transitions of the unlock switch. After the GEM senses the first
transition, it unlocks that door where the transition occurs and illuminates the courtesy lamps. There is a five-second window that begins from the first
transition of the unlock switch. If within that window, a second unlock command is sensed by the GEM, the GEM will energize a relay to unlock all
the doors after the second transition of the unlock switch returns to the vertical position in the door lock cylinder.
