Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.

CHECK WIRE HARNESS (POWER SOURCE)

Disconnect the P38 regulator switch connector.
Turn the ignition switch on.

Check the voltage between the terminal of the wire harness side connector and the body ground.

Standard:

TERMINAL SPECIFIED CONDITION

Terminal No.	Condition	Specified Condition
P38-3 - Body ground	Ignition switch ON	10 to 14 V

Fig 1: Identifying P38 Regulator Switch Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR (REGULATOR SWITCH - POWER WINDOW RELAY)
OK: GO TO NEXT STEP

INSPECT POWER WINDOW REGULATOR SWITCH ASSY REAR (REAR LH)

Remove the regulator switch.

Check the resistance between the switch terminals when the switch is operated, as shown in TERMINAL SPECIFIED CONDITION .

Standard:

TERMINAL SPECIFIED CONDITION

Terminal No.	Regulator Switch	Specified Condition
1 - 2, 3 - 4	UP	Below 1 Ω
1 - 2, 4 - 5	OFF
2 - 3, 4 - 5	DOWN

Fig 2: Identifying Regulator Switch Connector Terminal

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE POWER WINDOW REGULATOR SWITCH ASSY REAR (REAR LH)
OK: GO TO NEXT STEP

CHECK WIRE HARNESS (REGULATOR SWITCH - MOTOR) (REGULATOR SWITCH - BODY GROUND)

Disconnect the P42 motor connector.

Check the resistance between the wire harness side connectors.

Standard:

TERMINAL SPECIFIED CONDITION

Terminal No.	Specified Condition
P38-2 (D) - P42-2	Below 1 Ω
P38-4 (U) - P42-1	Below 1 Ω

Check the resistance between the P38 regulator switch connector and body ground.

Standard:

TERMINAL SPECIFIED CONDITION

Terminal No.	Specified Condition
P38-2 (D) - Body ground	10 KΩ or higher
P38-4 (U) - Body ground	10 KΩ or higher

Fig 3: Identifying P42 Motor Connector Terminal

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
OK: GO TO NEXT STEP

INSPECT POWER WINDOW REGULATOR MOTOR ASSY LH (REAR LH)
1. Remove the motor (See OVERHAUL ).
2. Apply battery voltage to connector terminals 1 and 2.
3. Check that the motor smoothly rotates.
Fig 4: Inspecting Power Window Regulator Motor Assy LH (Rear LH)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NOTE: Do not apply battery voltage to any terminals except terminals 1 and 2.

Standard:

Fig 5: Terminal Specified Condition Table
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE POWER WINDOW REGULATOR MOTOR ASSY LH (REAR LH)
2. OK: REPAIR OR REPLACE HARNESS AND CONNECTOR (MASTER SWITCH - REGULATOR SWITCH)