Toyota ST185 Series Repair Manual page 89

SYSTEM OUTLINE
CURRENT ALWAYS FLOWS TERMINAL 4 OF THE POWER MAIN RELAY THROUGH THE POWER FUSE. WITH THE IGNITION SW
TURNED ON, CURRENT FLOWS THROUGH THE GAUGE FUSE TO TERMINAL 2 OF THE POWER MAIN RELAY
GROUND. THIS ACTIVATES THE RELAY AND CURRENT FLOWING TO TERMINAL 1 OF THE POWER MAIN RELAY
OF THE POWER WINDOW MASTER SW AND TERMINAL 5 OF THE POWER WINDOW SW RH (PASSENGER'S).
1. MANUAL UP OPERATION (DRIVER'S WINDOW)
WITH THE IGNITION SW TURNED ON AND WITH THE POWER WINDOW MASTER SW IN UP POSITION, THE CURRENT FLOWING TO
TERMINAL 6 OF THE POWER WINDOW MASTER SW FLOWS TO TERMINAL 5 OF THE MASTER SW
WINDOW MOTOR LH (DRIVER'S)
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 6 OF THE POWER WINDOW MASTER SW TO TERMINAL
1 OF THE MASTER SW CAUSES THE FLOW OF CURRENT FROM TERMINAL 1 OF THE MOTOR
TERMINAL 5 OF THE MASTER SW
OPERATION AND CAUSING THE MOTOR TO ROTATE IN REVERSE, LOWERING THE WINDOW.
2. AUTO DOWN OPERATION
WITH THE IGNITION SW ON AND WITH THE DRIVER'S SW OF THE POWER WINDOW MASTER SW IN DOWN POSITION, CURRENT
FLOWING TO TERMINAL 6 OF THE MASTER SW FLOWS TO TERMINAL 1 OF THE MASTER SW
WINDOW MOTOR MOTOR
MOTOR TO ROTATE TOWARDS THE DOWN SIDE. THEN THE SOLENOID IN THE MASTER SW IS ACTIVATED AND IT LOCKS THE
DRIVER'S 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 5 OF THE MASTER SW AND
TERMINAL 3 INCREASES. AS A RESULT, THE SOLENOID STOPS OPERATING, THE DRIVER'S SW TURNS OFF AND FLOW FROM
TERMINAL 6 OF THE MASTER SW TO TERMINAL 1 IS CUT OFF, STOPPING THE MOTOR SO THAT AUTO STOP OCCURS.
3. STOPPING OF AUTO DOWN AT DRIVER'S WINDOW
WHEN THE DRIVER'S SW IS PUSHED TO THE UP SIDE DURING AUTO DOWN OPERATION, A GROUND CIRCUIT OPENS IN THE
MASTER SW AND CURRENT DOES NOT FLOW FROM TERMINAL 5 OF THE MASTER SW
CAUSING AUTO DOWN OPERATION TO STOP. IF THE DRIVER'S SW IS PUSHED 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) PUSHED TO THE UP SIDE, CURRENT FLOWING FROM TERMINAL 6 OF THE POWER
WINDOW SW FLOWS TO TERMINAL 5 OF THE POWER WINDOW SW
TERMINAL 1 TERMINAL 1 OF THE POWER WINDOW SW
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 PUSHED TO THE UP SIDE. WHEN THE WINDOW DESCENDS, THE CURRENT
FLOWING TO THE MOTOR FLOWS IN THE OPPOSITE DIRECTION, FLOM TERMINAL 1
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 6 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.
5. KEY OFF POWER WINDOW OPERATION
WITH THE IGNITION SW TURNED FROM ON TO OFF, THE DOOR CONTROL RELAY OPERATES AND CURRENT FLOWS FROM POWER
FUSE TERMINAL 8 OF THE DOOR LOCK ECU
GROUND FOR ABOUT 60 SECONDS. THE SAME AS NORMAL OPERATION, THE CURRENT FLOWS FROM POWER FUSE
4 OF THE POWER MAIN RELAY
POWER MAIN RELAY TO TERMINAL 6 OF POWER WINDOW SW RH (PASSENGER'S). AS A RESULT, FOR ABOUT 60 SECONDS
AFTER THE IGNITION SW IS TURNED OFF. IT IS POSSIBLE TO RAISE AND LOWER THE POWER WINDOW BY THE FUNCTIONING OF
THIS RELAY. ALSO, BY OPENING THE DOOR (DOOR COURTESY SW ON) WITHIN ABOUT 60 SECONDS AFTER TURNING THE
IGNITION SW TO OFF. A SIGNAL IS INPUT TO TERMINAL 2 OF DOOR LOCK ECU. AS A RESULT, THE ECU TURNS OFF AND UP AND
DOWN OF THE MOVEMENT OF THE WINDOWS STOPS.
MOTOR TERMINAL 1
TERMINAL 3 TO GROUND, FLOWING IN THE OPPOSITE DIRECTION TO MANUAL UP
TERMINAL 2 TERMINAL 5 OF THE MASTER SW
TERMINAL 15
TERMINAL 1 TERMINAL 6 OF THE POWER WINDOW MASTER SW AND TERMINAL 1 OF THE
TERMINAL 1 OF THE MASTER SW
TERMINAL 3
TERMINAL 2 OF THE WINDOW MOTOR
TERMINAL 3 TERMINAL 4 OF THE MASTER SW
MOTOR
TERMINAL 2 OF THE POWER MAIN RELAY
TERMINAL 3
TO TERMINAL 6
TERMINAL 2 OF THE POWER
TERMINAL 3 TO GROUND AND
MOTOR TERMINAL 2
TERMINAL 1 OF THE POWER
TO GROUND, CAUSING THE
TO TERMINAL 3, SO THE MOTOR STOPS,
TERMINAL 3
TO TERMINAL 2, AND THE MOTOR
TERMINAL 3
TO
MOTOR
TO
TO
TERMINAL
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