Power Window Control

CAUTION: When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.

NOTE: Battery power and ground must be removed before disconnecting Generic Electronic Module (GEM) connectors to avoid setting false DTCs.

Driver's power window one-touch down operation is controlled by the Generic Electronic Module (GEM). This feature functions only when ignition switch is in RUN or ACC positions. GEM determines ignition switch position by monitoring the key-in ignition, RUN/ACC and RUN/START circuits. One-touch down operation is requested of GEM by momentarily pressing driver's window regulator control switch DOWN for 62-320 milliseconds. GEM uses the initial voltage input from down switch to begin one-touch down operation. If voltage input was less than 320 milliseconds, GEM will maintain voltage supply to the motor down circuit. GEM will maintain the operation until:

Seven seconds expires.
Motor stall is detected by monitoring current draw.
Voltage input is received by GEM on either the up or down switch circuits.

Ground for one-touch down operation does not pass through GEM. Ground is supplied through driver window regulator control switch as with normal operation. If GEM continues to see voltage on the down circuit for more than 320 milliseconds after initial activation, GEM will not effect operation. The down circuit through GEM is a direct connection to the motor in its normal state. This allows the driver window regulator control switch to control the motor for normal operation. Passenger window regulator motor(s) are hardwired directly to window regulator control switches.