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.
2010 Scion xB AutomaticFACTORY OEM SERVICE PROCEDURE
Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to the system before inspecting the suspected areas below.
POWER WINDOW CONTROL SYSTEM
| Symptom | Suspected Area | Reference |
|---|---|---|
| Remote Up / Down Function does not Operate | Power window regulator master switch assembly | Refer to INSPECTION |
| Wire harness | - | |
| Driver Side Power Window does not Operate with Power Window Master Switch | Power window regulator master switch assembly | Refer to Driver Side Power Window does not Operate with Power Window Master Switch |
| Front power window regulator motor assembly LH | Refer to Driver Side Power Window does not Operate with Power Window Master Switch | |
| Wire harness | - | |
| Front Passenger Side Power Window does not Operate with Front Passenger Side Power Window Switch | Front power window regulator switch assembly RH | Refer to INSPECTION |
| Front power window regulator motor assembly RH | Refer to INSPECTION | |
| Wire harness | - | |
| Rear Power Window LH does not Operate with Rear Power Window Switch LH | Rear power window regulator switch assembly LH | Refer to INSPECTION |
| Rear power window regulator motor assembly LH | Refer to INSPECTION | |
| Wire harness | - | |
| Rear Power Window RH does not Operate with Rear Power Window Switch RH | Rear power window regulator switch assembly RH | Refer to INSPECTION |
| Rear power window regulator motor assembly RH | Refer to INSPECTION | |
| Wire harness | - | |
| Power Windows do not Operate at All | ECU-B and POWER fuse | Refer to Power Windows do not Operate at All |
| ECU-IG No. 1 fuse | Refer to Power Windows do not Operate at All | |
| Power relay | Refer to Power Windows do not Operate at All | |
| Power window regulator master switch assembly | Refer to Power Windows do not Operate at All | |
| Wire harness | - | |
| Key-off Operation Function Operates even if Operating Conditions are not Satisfied | Front door courtesy light switch assembly | Refer to INSPECTION |
| Rear door courtesy light switch assembly | Refer to INSPECTION | |
| Main body ECU | - | |
| Wire harness or connector | - |
Factory Service Tools
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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