Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Remote Up / Down Function does not Operate: Procedure
2013 Toyota Sienna LE, AWDSECTION Procedure
- READ VALUE USING TECHSTREAM (MAIN BODY)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Main Body / Data List.
- Read the Data List according to the display on the Techstream.MAIN BODY (MAIN BODY ECU)
Tester Display Measurement Item/Range Normal Condition Diagnostic Note Communication P-Door Motor Connection status between front power window regulator motor assembly RH and main body ECU / OK or STOP OK: Normal communication
STOP: Communication stopped- Communication RL-Door Motor Connection status between rear power window regulator motor assembly LH and main body ECU / OK or STOP OK: Normal communication
STOP: Communication stopped- Communication RR-Door Motor Connection status between rear power window regulator motor assembly RH and main body ECU / OK or STOP OK: Normal communication
STOP: Communication stopped- Communication Master SW Connection status between multiplex network master switch and main body ECU / OK or STOP OK: Normal communication
STOP: Communication stopped- OK
On the Techstream screen, OK is displayed.
NG → See step 4
OK: Go to next step
- READ VALUE USING TECHSTREAM (MASTER SWITCH)
- Enter the following menus: Body Electrical / Master Switch / Data List.
- Read the Data List according to the display on the Techstream.MASTER SWITCH (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY)
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- 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- 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- 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- RL Door P/W up switch 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- RR Door P/W up switch 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- 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- 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- 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- Window Lock Switch Status Window lock switch signal / ON or OFF ON: Window lock switch LOCK position
OFF: Window lock switch UNLOCK position- OK
On the Techstream screen, ON or OFF is displayed accordingly.
Result
Result Proceed to NG A OK (Front passenger side power window remote up/down function does not operate) B OK (Rear LH side power window remote up/down function does not operate) C OK (Rear RH side power window remote up/down function does not operate) D
B → See step 5
C → See step 7
D → See step 6
A → See step 3
- REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY. Refer to REMOVAL
- GO TO LIN COMMUNICATION SYSTEM (Proceed to How to Proceed with Troubleshooting). Refer to HOW TO PROCEED WITH TROUBLESHOOTING
- REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH. Refer to REMOVAL
- REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH. Refer to REMOVAL
- REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH. Refer to REMOVAL
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.