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.
Inspection Procedure
- CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (WINDOW LOCK SWITCH)
- Turn the window lock switch OFF and operate the switches on the power window regulator master switch. Check that the remote UP/DOWN function operates normally.
OK: Remote UP/DOWN function operates normally.
Result
RESULT CHARTResult Proceed to OK A NG (Front RH side) B NG (Rear side) C
B: Go to step 2
C: REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (See REMOVAL )
A: END
- Turn the window lock switch OFF and operate the switches on the power window regulator master switch. Check that the remote UP/DOWN function operates normally.
- CHECK LIN COMMUNICATION SYSTEM
- Check for LIN communication system DTCs related to the power window control system (See
DIAGNOSTIC TROUBLE CODE CHART
).
OK: LIN communication system DTCs are not output.
NG: GO TO LIN COMMUNICATION SYSTEM (See HOW TO PROCEED WITH TROUBLESHOOTING )
OK: Go to next step
- Check for LIN communication system DTCs related to the power window control system (See
DIAGNOSTIC TROUBLE CODE CHART
).
- READ VALUE USING TECHSTREAM (POWER WINDOW MASTER SWITCH)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Master Switch / Data List /
- According to the display on the Techstream, read the Data List.
Master Switch
MASTER SWITCH REFERENCE CHARTTester Display Measurement Item/Range Normal Condition Diagnostic Note P Door P/W Auto SW Front passenger side power window remote auto UP/DOWN switch signal / ON or OFF ON: Front passenger side power window remote auto UP/DOWN switch on multiplex network master switch operated
OFF: Front passenger side power window switch on multiplex network master switch not operated- P Door P/W Up SW Front passenger side power window remote manual UP switch signal / ON or OFF ON: Front passenger side power window remote manual UP switch on multiplex network master switch operated
OFF: Front passenger side power window switch on multiplex network master switch not operated- P Door P/W Down SW Front passenger side power window remote manual DOWN switch signal / ON or OFF ON: Front passenger side power window remote manual DOWN switch on multiplex network master switch operated
OFF: Front passenger side power window switch on the multiplex network master switch not operated- OK: The Techstream display changes normally when master switch is operated.
NG: REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (See REMOVAL )
OK: REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH (See REMOVAL )
Use the Manual With the Right Hardware
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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.
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