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.
Key-off Operation Function Operates even if Operating Conditions are not Satisfied: Procedure
- CHECK MANUAL UP / DOWN FUNCTION
- Check that the manual up and down function using the power window regulator master switch assembly and power window regulator switch assembly can operate all the power windows. Refer to OPERATION CHECK .
OK
Manual up and down function is normal.
NG → See step 6
OK: Go to next step
- Check that the manual up and down function using the power window regulator master switch assembly and power window regulator switch assembly can operate all the power windows. Refer to OPERATION CHECK .
- CHECK REMOTE UP / DOWN FUNCTION
- Check that the remote up and down function using the power window regulator master switch assembly operates the power windows. Refer to OPERATION CHECK .
OK
Remote up and down function is normal.
NG → See step 6
OK: Go to next step
- Check that the remote up and down function using the power window regulator master switch assembly operates the power windows. Refer to OPERATION CHECK .
- CHECK OPERATION FUNCTION AFTER ENGINE SWITCH IS TURNED OFF
- Check the power window operation function after the engine switch is turned off.
Result
Result Proceed to When power window can still be operated even after opening driver door or front passenger door within approximately 45 seconds of engine switch being turned off A When power window can still be operated even after approximately 45 seconds have elapsed after engine switch is turned off (for front doors) B
B → REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)
A: Go to next step
- Check the power window operation function after the engine switch is turned off.
- READ VALUE USING TECHSTREAM
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- 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 RH (COWL SIDE JUNCTION BLOCK RH))
Tester Display Measurement Item/Range Normal Condition Diagnostic Note D Door Courtesy SW Driver side door courtesy light switch signal/ON or OFF ON: Driver door open
OFF: Driver door closed- P Door Courtesy SW Front passenger side door courtesy light switch signal/ON or OFF ON: Front passenger door open
OFF: Front passenger door closed- OK
On the Techstream screen, ON or OFF is displayed accordingly.
NG → See step 5
OK → REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)
- GO TO LIGHTING SYSTEM (Proceed to Door Courtesy Light Switch Circuit). Refer to Door Courtesy Switch Circuit
- GO TO OTHER PROBLEM (Proceed to Problem Symptoms Table). Refer to PROBLEM SYMPTOMS TABLE
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.