Toyota 4Runner: Rear Power Window LH Auto Up / Down Function does not Operate with Rear Power Window Switch LH

Toyota 4Runner Service Manual / Vehicle Exterior / Window / Glass / Power Window Control System / Rear Power Window LH Auto Up / Down Function does not Operate with Rear Power Window Switch LH

DESCRIPTION

If the auto up/down function does not operate, the cause may be one or more of the following:

The ECU in the power window regulator motor determines that the power window regulator motor has not been initialized.
The rear power window regulator switch has a malfunction.
The Hall IC in the power window regulator motor has a malfunction.
There is an open or short in the wiring between the rear power window regulator switch and rear power window regulator motor.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

HINT:

Since the power window control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with the "How to Proceed with Troubleshooting" procedures. Then, conduct the following inspection procedure.

PROCEDURE

1.	CHECK FOR DTC

(a) Clear the DTCs (See page ).

(b) Check for DTCs (See page ).

Result

Result	Proceed to
DTC is not output	A
DTC B2311 is output	B
DTC B2312 is output	C
DTC B2313 is output	D

GO TO DTC B2311

GO TO DTC B2312

GO TO DTC B2313

2.	CHECK MANUAL UP/DOWN FUNCTION (REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH)

(a) Check that the manual up/down function using the rear power window regulator switch can operate the rear power window regulator motor (See page ).

OK:

Manual up/down function operates.

GO TO "Rear Power Window LH does not Operate with Rear Power Window Switch LH"

3.	READ VALUE USING TECHSTREAM (REAR POWER WINDOW REGULATOR SWITCH)

(a) Use the Data List to check if the rear power window regulator is functioning properly (See page ).

RL-Door Motor

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

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

RL Door P/W Auto SW

Rear power window LH auto up/down signal / ON or OFF

ON: Rear power window LH auto up/down switch operated

OFF: Rear power window LH switch not operated

OK:

On tester screen, item changes between ON and OFF according to above chart.

REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH

4.	INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH

(a) Remove the rear power window regulator switch (See page ).

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

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
8 (AUTO) - 1 (GND)	Auto up/down operation	Below 1 Ω
8 (AUTO) - 1 (GND)	Not operated	10 kΩ or higher

REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH

5.	CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR SWITCH LH - REAR POWER WINDOW MOTOR REGULATOR LH AND BODY GROUND)

(a) Disconnect the j1 rear power window regulator switch connector.

(b) Disconnect the K2 power window regulator motor connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
j1-8 (AUTO) - K2-4 (AUTO)	Always	Below 1 Ω
j1 (GND) - Body ground	Always	Below 1 Ω
j1-8 (AUTO) - Body ground	Always	10 kΩ or higher

REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH

REPAIR OR REPLACE HARNESS OR CONNECTOR

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