Power Window Motor: Description and Operation

With the Ignition SW turned ON, current flows through the ECU-IG fuse --> TERMINAL A-2 of the ECU --> B-8 --> TERMINAL 1 of the Power Main Relay --> TERMINAL 3 --> to GROUND, this activates the relay and the current flowing to TERMINAL 2 of the Relay from power CB flows to TERMINAL 4 of the relay --> TERMINAL 9 of the Power Window master SW, TERMINAL 5 (passenger's) and TERMINAL 5 (rear LH,RH) of the Power Window SW.

1. MANUAL OPERATION (DRIVER'S WINDOW)
With the Ignition SW turned ON and with the Power Window master SW (driver's) in UP position, the current flowing to TERMINAL 9 of the Power Window master SW flows to TERMINAL 4 of the master SW --> TERMINAL 2 of the Power Window Motor --> TERMINAL 1 --> TERMINAL 10 of the master SW --> TERMINAL 8 --> to GROUND and causes the Power Window Motor to rotate in the UP direction. The window ascends only while the SW is being pushed.

In down operation, the flow of current from TERMINAL 9 of the Power Window Master SW to TERMINAL 10 of the master SW causes the flow of current from TERMINAL 1 of the Motor --> TERMINAL 2 --> TERMINAL 4 of the master SW --> TERMINAL 8 --> to GROUND, flowing in the opposite direction to manual UP operation and causing the motor to rotate in reverse, lowering the window.

2. AUTO DOWN OPERATION
With the Ignition SW ON and with the auto SW of the Power Window master SW in DOWN position, current flowing to TERMINAL 9 of the master SW flows to TERMINAL 10 of the master SW --> TERMINAL 1 of the Power Window motor --> TERMINAL 2 --> TERMINAL 4 of the master SW --> TERMINAL 8 --> to GROUND, causing the motor to rotate towards the down side.

Then the solenoid in the master SW is activated and it locks the auto SW being pushed, causing the motor to continue to rotate in auto down operation.

When the window has completely descended, the current flow between TERMINAL 4 of the master SW and TERMINAL 8 increases. As a result, the solenoid stops operating, the auto SW turns OFF and flow from TERMINAL 9 of the master SW to TERMINAL 10 is cut OFF, stopping the motor so that auto stop occurs.

3. STOPPING OF AUTO DOWN AT DRIVER'S WINDOW
When the master SW (driver's) is pulled to the UP side during auto down operation, a Ground circuit opens in the master SW and current does not flow from TERMINAL 4 of the master SW to TERMINAL 8, so the motor stops, causing auto down operation to stop. If the master SW is pulled continuously, the motor rotates in the UP direction in manual up operation.

4. MANUAL OPERATION BY POWER WINDOW SW (PASSENGER'S WINDOW)
With Power Window SW (passenger's) pulled to the up side, current flowing from TERMINAL 5 of the Power Window SW flows to TERMINAL 2 of the Power Window SW --> TERMINAL 2 of the Power Window Motor --> TERMINAL 1 --> TERMINAL 3 of the Power Window SW --> TERMINAL 1 --> TERMINAL 3 of the master SW --> TERMINAL 8 --> to GROUND and causes the Power Window Motor (passenger's) to rotate in the up direction. Up operation continues only while the Power Window SW is pulled to the up side. When the window descends, the current flowing to the motor flows in the opposite direction, from TERMINAL 1 to TERMINAL 2, and the motor rotates in reverse. When the window lock SW is pushed to the lock side, the GROUND circuit to the passenger's window becomes open.

As a result, even if open/close operation of the passenger's window is tried, the current from TERMINAL 8 of the Power Window master SW is not grounded and the motor does not rotate. So the passenger's window can not be operated and window lock occurs. Furthermore, Rear LH, RH window operate the same as the above circuit.

5. KEY OFF POWER WINDOW OPERATION
With the Ignition SW turned from ON to OFF, the Theft Deterrent ECU operates and current flows from door CB to TERMINAL A-8 of the ECU or DOME fuse to TERMINAL A-20 of the ECU --> TERMINAL B-8 --> TERMINAL 1 of power main relay --> TERMINAL 3 --> to GROUND for about 60 seconds. The same as normal operation, the current flows from power CB --> TERMINAL 2 of the power main relay --> TERMINAL 4 --> TERMINAL 9 of the Power Window master SW and --> TERMINAL 3 of the power main relay to --> TERMINAL 5 of the Power Window SW. As a result, for about 60 seconds after the Ignition SW is turned OFF, the functioning of this relay makes it possible to raise and lower the Power Window. Also, by opening the front door (door select SW ON) within about 60 seconds after turning the Ignition SW to OFF, a signal is input to TERMINALS A-12 or A-13 of Theft Deterrent ECU. As a result, the ECU turns OFF and up and down movement of the Power Window stops.