Toyota Sienna Service Manual: Auto Up / Down Function does not Operate

DESCRIPTION

If the AUTO UP/DOWN function does not operate, any of the following troubles may be the cause:

•  When the PWR fuse or the power window relay (Marking: PWR) is replaced with new ones, or when the battery terminal and the connector of the power window master switch are disconnected, the power window memory of the fully closed position which is recorded in the power window master switch is erased.
•  The pulse sensors in the driver side power window motor have a malfunction.
•  There is an open or short circuit in the wiring between the power window master switch and the driver side power window motor.
•  The power window master switch has a malfunction.

WIRING DIAGRAM

INSPECTION PROCEDURE

1 CHECK MANUAL UP/DOWN FUNCTION (DRIVER SIDE)

1. Check that the door glass can be operated manually.

2 CHECK ILLUMINATION OF POWER WINDOW MASTER SWITCH

1. Turn the ignition switch ON.
2.  Operate the AUTO (drive side) switch of the master switch.
3.  Check the blinking pattern of the AUTO light as shown in the illustration.

1.  If pattern (1) is displayed, proceed to A.
2.  If pattern (2) or (3) is displayed, proceed to B.
3.  If the normal pattern is displayed, proceed to C.

3 RESET POWER WINDOW REGULATOR MOTOR

4 CHECK WIRE HARNESS (MASTER SWITCH - MOTOR) (MASTER SWITCH - BODY GROUND)

1. Disconnect the D9 master switch connector.
2.  Disconnect the P40 motor connector (driver side).
3.  Check the resistance between the wire harness side connectors.

Standard resistance

4. Check the resistance between the D9 master switch connector and body ground.

Standard resistance

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (DRIVER SIDE)