Windows: Description and Operation

A permanent magnet (PM) motor operates each of the Power Windows. Each motor raises or lowers the glass when voltage is supplied to it. The direction the motor turns depends on the polarity of the supply voltage.

Master Window Control Switch

With the Ignition Switch in ACC or RUN, battery voltage is applied to the Master Window Control Switch through Circuit Breaker 14 and the 193 (Y/LG) and 400 (LB/BK) wires.

When any of the UP switches in the Master Window Control Switch not associated with One Touch Down are operated, battery voltage is applied to the Window Motor. The Window Motor is grounded through the DN contact in the Mater Window Control Switch. The Motor runs to drive the window up. When any of the DN Switches in the Master Window Control Switch are operated, battery voltage is applied to the Window Motor in the opposite direction. The Window Motor in the opposite direction. The Window Motor is grounded through the UP contact in the Master Window Control Switch, and the Motor runs to drive the window down.

One Touch Window Down Operation

The One Touch Window Down function is a convenience feature that allows the left front window to be fully opened when the left Front Window DN Switch is operated for less than 0.4 seconds and then released. Actuating the LH Front Window DN Switch for more than 0.4 seconds provides conventional power window operation.

When the Ignition Switch is in ACC or RUN, the One Touch Down Window Module receives power. When the Left Front Window DN Switch is operated, battery voltage is applied to the One Touch Window Down Module at terminal 2; ground is applied to terminal 4. The Module then turns on its output at terminal 1, providing battery voltage to the Left Front Window Motor. The Motor is grounded through the Left Front Window UP contact in the Master Window Control Switch. If the DN switch was actuated for less than 0.4 seconds, the window will open completely.

When the Left Front Window UP Switch is operated, voltage is applied to the One Touch Window Down Module at terminal 4; ground is applied to terminal 2. The Module then turns on its output at terminal 1, providing ground to the Left Front Window Motor. Voltage is applied to the motor through the LH Front Window DN contact in the Master Window Control Switch, and the motor runs to drive the window up.

Individual Window Control Switch Operation

The Right Front, Left Rear and Right Rear Window Control Switches operate only their corresponding window motors. These switches do not have the "One Touch" feature and operate only in the conventional manner.

Power and ground are provided to these switches through the Master Window Control Switch. These switches can be disabled by actuating the Window Lockout Switch in the Master Window Control Switch, removing the voltage feed to the individual switches.

All of the window control switches contain light emitting diodes (LEDs) which illuminate the UP and DN rocker switches when the Ignition Switch is turned to RUN or ACC.