Rear Power Window LH does not Operate with Rear Power Window Switch LH: Procedure

WARNING: This page is about a different car, the 2010 Lexus GS 450h. However, it is still accessible from the selected car via links, so may be relevant.

PERFORM ACTIVE TEST USING TECHSTREAM (POWER WINDOW UP/DOWN)

Connect the Techstream to the DLC3.
Turn the power switch on (IG) and turn the Techstream ON.
Select the following menu items: Body / RL-Door Motor / Active Test.

Perform the Active Test according to the display on the Techstream.

RL-DOOR MOTOR

Tester Display	Test Part	Control Range	Diagnostic Note
Power Window	Power window	UP or OFF	-
Power Window	Power window	DOWN or OFF	-

Rear LH power window operates normally.

WARNING:

Be careful to avoid injuries as this test causes vehicle parts to move.

During the Active Test, the jam protection function will not operate.

NG → See step 4

OK: Go to next step

READ VALUE USING TECHSTREAM (REAR LH)

Select the following menu items: Body / RL-Door Motor / Data List.

Read the Data List according to the display on the Techstream.

RL-DOOR MOTOR

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
RL Door P/W Up SW	Rear LH power window manual up switch signal / ON or OFF	ON: Rear LH power window manual up switch is operated OFF: Rear LH power window manual up switch is not operated	-
RL Door P/W Down SW	Rear LH power window manual down switch signal / ON or OFF	ON: Rear LH power window manual down switch is operated OFF: Rear LH power window manual down switch is not operated	-

ON (switch operates) appears on screen.

NG → See step 3

OK → See step 8

CHECK HARNESS AND CONNECTOR (WINDOW SWITCH (REAR LH SIDE) - DOOR ECU (REAR LH SIDE))

Disconnect the S5 power window switch connector.
Disconnect the O7 rear door ECU connector.

Fig 1: Identifying S5 Power Window Switch Connector And O7 Rear Door ECU Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance according to the value(s) in the table below.

Standard resistance

Tester Connection	Condition	Specified Condition
S5-5 (E) - O7-20 (SGND)	Always	Below 1 Ω
S5-5 (E) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

CHECK HARNESS AND CONNECTOR (DOOR ECU (REAR LH SIDE) - REGULATOR MOTOR (REAR LH SIDE))

Disconnect the O12 motor connector.

Fig 2: Identifying Door ECU And Regulator Motor (Rear LH Side) Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance according to the value(s) in the table below.

Standard resistance

Tester Connection	Condition	Specified Condition
O7-5 (BDRJ) - O12-2 (B)	Always	Below 1 Ω
O7-2 (PWE) - O12-1 (E)	Always	Below 1 Ω
O7-5 (BDRJ) - Body ground	Always	10 kΩ or higher
O7-2 (PWE) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

CHECK HARNESS AND CONNECTOR (WINDOW SWITCH (REAR LH) - REGULATOR MOTOR (REAR LH))

Measure the resistance according to the value(s) in the table below.

Fig 3: Identifying Window Switch And Regulator Motor (Rear LH) Connector Terminals

Standard resistance

Tester Connection	Condition	Specified Condition
S5-2 (U) - O12-10 (UP1)	Always	Below 1 Ω
S5-10 (D) - O12-7 (DWN1)	Always	Below 1 Ω
S5-2 (U) - Body ground	Always	10 kΩ or higher
S5-10 (D) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

INSPECT POWER WINDOW SWITCH (for Rear LH side)

Measure the resistance according to the value(s) in the table below.

Fig 4: Identifying Power Window Switch (Rear LH Side) Connector Terminals

Standard resistance

Tester Connection	Switch Condition	Specified Condition
2 (U) - 5 (E)	Manual UP operation	Below 1 Ω
10 (D) - 5 (E)	Manual DOWN operation	Below 1 Ω

NG → See step 9

OK → See step 7

REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to REMOVAL - Step 21
GO TO MULTIPLEX COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
REPLACE POWER WINDOW SWITCH (for Rear LH side). Refer to REMOVAL - Step 7