F 150 2WD Pickup V8-5.4L Prop SOHC VIN Z (1998)
Interior Lighting Module: Description and Operation
GEM Sleep Mode
The GEM and the CTM sleep mode deactivate all outputs to conserve battery power. Sleep mode is entered when the ignition has not entered the RUN
or ACC position and 45 minutes has elapsed since the last wake-up input was received. In this mode, GEM current consumption is reduced to 5.0 mA or
less. During sleep mode the GEM monitors the following wake-up inputs:
^
Both front door open warning lamp switches.
^
Ignition switch in the key-in, ACC and RUN position.
^
RAP illuminated entry request.
The GEM sleep mode outputs are:
^
None. (All circuits are deactivated during sleep mode.)
If a change in any of the above inputs occur while the GEM is asleep, the GEM will wake up and monitor all of its inputs and have the ability to activate
any of its outputs.
The following components are under the control of the battery saver relay:
^
Interior lamp.
^
Under hood lamp.
^
Glove compartment lamp.
^
Panel dimmer switch.
^
Interior lamp relay.
The battery saver relay becomes active (relay coil is energized) when the GEM is in the awake mode, and is deactivated (relay coil is de-energized) in
the sleep mode. The battery saver will remain active until the ignition switch is removed from the ACC or RUN position and 40 minutes have passed
since the last active input was received (see sleep mode inputs). At that time, the relay will be deactivated and power to the above circuits will terminate.
The battery saver inputs are the GEM sleep mode inputs.
The battery saver output is the battery saver relay.
