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HOMESERVICE MANUALSTOYOTA2013SIENNA LE, AWDREPAIR AND DIAGNOSISBODY & FRAMEWINDOWSPOWER WINDOW CONTROL SYSTEM (DIAGNOSTIC CODES & SYMPTOM TESTS)POWER WINDOW CONTROL SYSTEMDTC B2312: POWER WINDOW SWITCH MALFUNCTIONPROCEDURE

2013 Toyota Sienna LE, AWD

DTC B2312: Power Window Switch Malfunction: Procedure

2013 Toyota Sienna LE, AWDSECTION Procedure

CHECK DTC OUTPUT
1. Clear the DTC. Refer to DTC CHECK / CLEAR .
2. Check for DTCs. Refer to DTC CHECK / CLEAR .
  OK
  
  No DTCs output.
NG → See step 2

OK → END (DUE TO SWITCH BEING OPERATED FOR 20 SECONDS OR MORE)

CHECK DTC

Check for DTC output conditions.

Result

Result	Proceed to
DTC output from multiplex network master switch assembly	A
DTC output from front power window regulator motor assembly LH	B
DTC output from front power window regulator motor assembly RH	C
DTC output from rear power window regulator motor assembly LH	D
DTC output from rear power window regulator motor assembly RH	E

B → See step 3

C → See step 5

D → See step 8

E → See step 11

A → See step 14

READ VALUE USING TECHSTREAM (D-DOOR MOTOR)

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Body Electrical / D-Door Motor / Data List.

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

D-DOOR MOTOR (FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH)

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

On the Techstream screen, ON or OFF is displayed accordingly.

NG → See step 4

OK → See step 18

CHECK HARNESS AND CONNECTOR (MASTER SWITCH - DRIVER SIDE MOTOR)

Disconnect the multiplex network master switch assembly connector.
Disconnect the front power window regulator motor assembly LH connector.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
H8-20 (UP) - Body ground	Always	10 kΩ or higher
H8-15 (DOWN) - Body ground	Always	10 kΩ or higher
H1-10 (UP) - Body ground	Always	10 kΩ or higher
H1-7 (DOWN) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK → See step 18

READ VALUE USING TECHSTREAM (P-DOOR MOTOR)

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Body Electrical / P-Door Motor / Data List.

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

P-DOOR MOTOR (FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH)

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
P Door P/W Auto SW	Front passenger side power window auto up/down switch signal / ON or OFF	ON: Front passenger side power window auto switch operated OFF: Front passenger side power window auto switch not operated	-
P Door P/W Up SW	Front passenger side power window manual up switch signal / ON or OFF	ON: Front passenger side power window manual up switch operated OFF: Front passenger side power window manual up switch not operated	-
P Door P/W Down SW	Front passenger side power window manual down switch signal / ON or OFF	ON: Front passenger side power window manual down switch operated OFF: Front passenger side power window manual down switch not operated	-

On the Techstream screen, ON or OFF is displayed accordingly.

NG → See step 6

OK → See step 19

INSPECT FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY RH

Remove the front power window regulator switch assembly RH. Refer to REMOVAL .

Fig 1: Inspecting Power Window Regulator Switch Assembly
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard Resistance

Tester Connection	Switch Condition	Specified Condition
6 (UP) - 1 (GND)	Auto up or up position	Below 1 Ω
7 (DOWN) - 1 (GND)	Auto down or down position	Below 1 Ω
8 (AUTO) - 1 (GND)	Auto up or auto down position	Below 1 Ω
6 (UP) - 1 (GND)	Free	10 kΩ or higher
7 (DOWN) - 1 (GND)	Free	10 kΩ or higher
8 (AUTO) - 1 (GND)	Free	10 kΩ or higher

TEXT IN ILLUSTRATION

*a	Component without harness connected (Front Power Window Regulator Switch Assembly RH)

NG → See step 15

OK: Go to next step

CHECK HARNESS AND CONNECTOR (FRONT RH SIDE SWITCH - FRONT RH SIDE MOTOR)

Disconnect the front power window regulator motor assembly RH connector.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
G7-6 (UP) - Body ground	Always	10 kΩ or higher
G7-7 (DOWN) - Body ground	Always	10 kΩ or higher
G7-8 (AUTO) - Body ground	Always	10 kΩ or higher
G1-10 (UP) - Body ground	Always	10 kΩ or higher
G1-7 (DOWN) - Body ground	Always	10 kΩ or higher
G1-4 (AUTO) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK → See step 19

READ VALUE USING TECHSTREAM (RL-DOOR MOTOR)

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Body Electrical / RL-Door Motor / Data List.

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

RL-DOOR MOTOR (REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH)

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

On the Techstream screen, ON or OFF is displayed accordingly.

NG → See step 9

OK → See step 20

INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH

Remove the rear power window regulator switch assembly LH. Refer to REMOVAL .

Fig 2: Inspecting Power Window Regulator Switch Assembly
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard Resistance

Tester Connection	Switch Condition	Specified Condition
6 (UP) - 1 (GND)	Auto up or up position	Below 1 Ω
7 (DOWN) - 1 (GND)	Auto down or down position	Below 1 Ω
8 (AUTO) - 1 (GND)	Auto up or auto down position	Below 1 Ω
6 (UP) - 1 (GND)	Free	10 kΩ or higher
7 (DOWN) - 1 (GND)	Free	10 kΩ or higher
8 (AUTO) - 1 (GND)	Free	10 kΩ or higher

TEXT IN ILLUSTRATION

*a	Component without harness connected (Rear Power Window Regulator Switch Assembly LH)

NG → See step 16

OK: Go to next step

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

Disconnect the rear power window regulator motor assembly LH connector.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
J1-6 (UP) - Body ground	Always	10 kΩ or higher
J1-7 (DOWN) - Body ground	Always	10 kΩ or higher
J1-8 (AUTO) - Body ground	Always	10 kΩ or higher
J7-10 (UP) - Body ground	Always	10 kΩ or higher
J7-7 (DOWN) - Body ground	Always	10 kΩ or higher
J7-4 (AUTO) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK → See step 20

READ VALUE USING TECHSTREAM (RR-DOOR MOTOR)

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Body Electrical / RR-Door Motor / Data List.

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

RR-DOOR MOTOR (REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH)

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
RR Door P/W Auto SW	Rear RH side power window auto up/down switch signal / ON or OFF	ON: Rear RH side power window auto switch operated OFF: Rear RH side power window auto switch not operated	-
RR Door P/W Up SW	Rear RH side power window manual up switch signal / ON or OFF	ON: Rear RH side power window manual up switch operated OFF: Rear RH side power window manual up switch not operated	-
RR Door P/W Down SW	Rear RH side power window manual down switch signal / ON or OFF	ON: Rear RH side power window manual down switch operated OFF: Rear RH side power window manual down switch not operated	-

On the Techstream screen, ON or OFF is displayed accordingly.

NG → See step 12

OK → See step 21

INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH

Remove the rear power window regulator switch assembly RH. Refer to REMOVAL .

Fig 3: Inspecting Power Window Regulator Switch Assembly
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard Resistance

Tester Connection	Switch Condition	Specified Condition
6 (UP) - 1 (GND)	Auto up or up position	Below 1 Ω
7 (DOWN) - 1 (GND)	Auto down or down position	Below 1 Ω
8 (AUTO) - 1 (GND)	Auto up or auto down position	Below 1 Ω
6 (UP) - 1 (GND)	Free	10 kΩ or higher
7 (DOWN) - 1 (GND)	Free	10 kΩ or higher
8 (AUTO) - 1 (GND)	Free	10 kΩ or higher

TEXT IN ILLUSTRATION

*a	Component without harness connected (Rear Power Window Regulator Switch Assembly RH)

NG → See step 17

OK: Go to next step

CHECK HARNESS AND CONNECTOR (REAR RH SWITCH - REAR RH MOTOR)

Disconnect the rear power window regulator motor assembly RH connector.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
I1-6 (UP) - Body ground	Always	10 kΩ or higher
I1-7 (DOWN) - Body ground	Always	10 kΩ or higher
I1-8 (AUTO) - Body ground	Always	10 kΩ or higher
I7-10 (UP) - Body ground	Always	10 kΩ or higher
I7-7 (DOWN) - Body ground	Always	10 kΩ or higher
I7-4 (AUTO) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK → See step 21

REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY. Refer to REMOVAL
REPLACE FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY RH. Refer to REMOVAL
REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH. Refer to REMOVAL
REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH. Refer to REMOVAL
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to REMOVAL
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH. Refer to REMOVAL
REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to REMOVAL
REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH. Refer to REMOVAL

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.