Toyota 4Runner: Rear Power Window LH 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 does not Operate with Rear Power Window Switch LH

DESCRIPTION

If the manual up/down function does not operate, there may be a malfunction in the rear power window regulator switch, rear power window regulator motor, harness or connector.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

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 (B2312)

(a) Check if DTC B2312 is output (See page ).

OK:

DTC B2312 is not output.

GO TO DTC B2312

2.	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 Up SW	Rear power window LH manual up signal / ON or OFF	ON: Rear power window LH manual up switch operated OFF: Rear power window LH switch not operated	-
RL Door P/W Down SW	Rear power window LH manual down signal / ON or OFF	ON: Rear power window LH manual down switch operated OFF: Rear power window LH switch not operated	-

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

RL Door P/W Up SW

Rear power window LH manual up signal / ON or OFF

ON: Rear power window LH manual up switch operated

OFF: Rear power window LH switch not operated

RL Door P/W Down SW

Rear power window LH manual down signal / ON or OFF

ON: Rear power window LH manual down switch operated

OFF: Rear power window LH switch not operated

OK:

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

GO TO STEP 4

3.	PERFORM ACTIVE TEST USING TECHSTREAM (POWER WINDOW)

(a) Select the Active Test, use the Techstream to generate a control command, and then check that power window regulator motor operates (See page ).

RL-Door Motor

Tester Display	Test Part	Control Range	Diagnostic Note
Power Window	Rear LH side power window	OFF/UP/DOWN	-

OK:

The power window regulator motor operates normally.

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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
6 (UP) - 1 (GND)	Manual up operation	Below 1 Ω
7 (DOWN) - 1 (GND)	Manual down operation	Below 1 Ω
6 (UP) - 1 (GND)	Not operated	10 kΩ or higher
7 (DOWN) - 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 ASSEMBLY LH - BODY GROUND)

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

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
j1-1 (GND) - Body ground	Always	Below 1 Ω

Text in Illustration

*a	Front view of wire harness connector (to Rear Power Window Regulator Switch Assembly LH)

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH - REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH)

(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
j1-6 (UP) - K2-10 (UP)	Always	Below 1 Ω
j1-7 (DOWN) - K2-7 (DOWN)	Always	Below 1 Ω
j1-6 (UP) - Body ground	Always	10 kΩ or higher
j1-7 (DOWN) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.	CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH - BATTERY AND BODY GROUND)

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

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
K2-2 (B) - Body ground	Always	11 to 14 V

Standard Resistance:

Tester Connection	Condition	Specified Condition
K2-1 (GND) - Body ground	Always	Below 1 Ω

Text in Illustration

*a	Front view of wire harness connector (to Rear Power Window Regulator Motor Assembly LH)

REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH

REPAIR OR REPLACE HARNESS OR CONNECTOR

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