Windows: Description and Operation

The Generic Electronic Module (GEM) controls the opening of the LH driver side power window (window down motion) by activating the one touch down window relay.

Down window motion operates in two modes. manual mode and auto mode. When the GEM detects the first down position, first detent on the switch, it enters manual mode. In manual mode, the window will move downward only while the switch is depressed. Similarly, when the GEM detects the second down position, second detent on the switch. it enters auto mode. In auto mode. the window will open completely with just a momentary press of the switch.

The power window system will operate only if:
- The ignition switch is in the RUN or ACC position, or
- The delayed accessory feature is in the active mode. There are two modes of operation for the power window system:

Manual Mode:
When the LH window regulator control switch is pressed to the first detent position, the window will move down until one of the following conditions is met:
- The LH window regulator control switch is no longer in the first detent position.
- The LH window regulator control switch is pushed to the One Touch Down (OTD) position causing the windows to enter auto mode.

Feature Input:
- LH window regulator control switch, first detent position.

NOTE: Delayed accessory feature must be active.

Feature Output:
- One touch down relay coil output (grounded when activated, open circuit when deactivated).

Auto Mode:
Auto mode provides the One Touch Down feature (OTD feature). The OTD feature is activated when the LH window regulator control switch, for the LH window, is pressed to the second down position, second detent.

Auto mode will be terminated when any of the follow conditions are met:
- The LH window regulator control switch is pushed to the up position.
- The LH window regulator control switch is released (OFF position) and then moved to the down position (first detent) or OTD position (second detent).
- Seven seconds have elapsed since auto mode was initiated.
- A window regulator electric drive stall condition is detected on the one touch down sense line inputs.

Feature Inputs:






- LH window regulator control switch inputs; refer to the LH Window Regulator Control Switch Table.

NOTE: Delayed accessory feature must be active.

- One touch down sense lines, high and low (voltage difference corresponds to window current).

Feature Output:
- Down window relay coil output (grounded when activated, open circuit when deactivated).

One Touch Down Relay
The GEM controls manual down and OTD window movement with the one touch down relay.

The relay is activated by applying ground directly to one side of the down window relay coil, and is deactivated by removing the ground signal.

Delayed Accessory

Features and Operation:

The delayed accessory feature of the GEM provides power for the power window system. The following components are under the control of the delayed accessory relay:
- LH window regulator electric drive.
- RH window regulator electric drive.

The delayed accessory feature is active when:
- The ignition is in the RUN position or ACC position, or
- The ignition switch makes a transition from RUN or ACC to OFF and both doors are closed (neither is ajar).

NOTE: Delayed accessory is suspended (off) while the ignition is in the START position. The delayed accessory feature is re-activated when the ignition makes the transition from START to RUN. The delayed accessory feature becomes deactivated if:
- The LH driver or RH passenger door becomes ajar when the ignition switch is in the OFF or KEY OUT positions.
- Ten minutes have elapsed since the ignition made a transition from RUN or ACC to OFF.

Feature Inputs:
- Ignition switch RUN position: 12V on both RUN and RUN/ACC inputs.
- Ignition switch ACC position: 12V on RUN/ACC input only.
- Door open warning lamp switches (grounded when door is ajar, open when door is closed).

Feature Outputs:
Delayed accessory relay coil output (grounded when active, open circuit when inactive).

Delayed Accessory Relay
The GEM controls the delayed accessory feature and power supply to the power windows through the delayed accessory relay.

The relay is activated by applying ground directly to one side of the delayed accessory relay coil and deactivated by removing the ground signal.

Battery Saver Relay
The following components are under the control of the battery saver relay:
- Delayed accessory relay Overhead interior lamp with map lamps.
- Underhood lamp switch.
- Glove box lamp switch.
- Overhead interior lamp switch.
- Interior lamp relay coil.

The battery saver relay becomes active (relay coil is energized) when the GEM is in awake mode and is deactivated (relay coil is de-energized) in sleep mode.

The battery saver will remain active until the ignition state is not ACC or RUN and 40 minutes have passed since last active input. At that time, the relay will be deactivated and power to the above circuits will terminate.

Five minutes after the battery saver relay has become deactivated, the GEM will go into a lower power state known as sleep mode. In the sleep mode, the GEM will deactivate all outputs and will monitor select inputs.

Logical characteristics of the GEM battery saver mode are as follows.

Feature Inputs:
- Sleep/Awake mode status.

Feature Outputs:
- Battery saver relay control (Open circuit in sleep mode, grounded when awake).