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.
2011 Toyota Avalon BaseFACTORY OEM SERVICE PROCEDURE
Problem Symptoms Table
POWER WINDOW CONTROL SYSTEM
| Symptom | Suspected Area | See |
|---|---|---|
| Driver side power window does not operate | 1. Power window master switch power source circuit | Refer to Power Window Master Switch Power Source Circuit |
| 2. Driver side power window motor circuit | Refer to Driver Side Power Window Motor Circuit | |
| 3. Multiplex network master switch assembly | - | |
| Front passenger, rear LH and rear RH power windows do not operate (with master switch) | 1. Window lock signal circuit (MPX line) | Refer to Window Lock Signal Circuit |
| 2. Multiplex network switch assembly (front passenger side) | - | |
| 3. Multiplex network switch assembly (rear LH side) | - | |
| 4. Multiplex network switch assembly (rear RH side) | - | |
| 5. Multiplex network master switch assembly | - | |
| Front passenger side power window does not operate (with front passenger switch) | 1. Front passenger side power window switch power source circuit | Refer to Front Passenger Side Power Window Switch Power Source Circuit |
| 2. Front passenger side power window motor circuit | Refer to Front Passenger Side Power Window Motor Circuit | |
| 3. Multiplex network switch assembly (front passenger side) | - | |
| Rear LH power window does not operate | 1. Rear power window switch LH circuit | Refer to Rear Power Window Switch LH Circuit |
| 2. Rear power window motor LH circuit | Refer to Rear Power Window Motor LH Circuit | |
| 3. Multiplex network switch assembly (rear LH side) | - | |
| Rear RH power window does not operate | 1. Rear power window switch RH circuit | Refer to Rear Power Window Switch RH Circuit |
| 2. Rear power window motor RH circuit | Refer to Rear Power Window Motor RH Circuit | |
| 3. Multiplex network switch assembly (rear RH side) | - | |
| Jam protection function and AUTO UP/DOWN function do not operate on driver side | 1. Initialization | Refer to INITIALIZATION |
| 2. Driver side power window motor circuit | Refer to Driver Side Power Window Motor Circuit | |
| 3. Multiplex network master switch assembly | - | |
| 4. Power window regulator motor assembly (driver side) | - | |
| Jam protection function and AUTO UP/DOWN function do not operate on front passenger side | 1. Initialization | Refer to INITIALIZATION |
| 2. Front passenger side power window motor circuit | Refer to Front Passenger Side Power Window Motor Circuit | |
| 3. Multiplex network switch assembly (front passenger side) | - | |
| 4. Power window regulator motor assembly (front passenger side) | - | |
| Jam protection function and AUTO UP/DOWN function do not operate on rear LH side | 1. Initialization | Refer to INITIALIZATION |
| 2. Rear power window motor LH circuit | Refer to Rear Power Window Motor LH Circuit | |
| 3. Multiplex network switch assembly (rear LH side) | - | |
| 4. Power window regulator motor assembly (rear LH side) | - | |
| Jam protection function and AUTO UP/DOWN function do not operate on rear RH side | 1. Initialization | Refer to INITIALIZATION |
| 2. Rear power window motor RH circuit | Refer to Rear Power Window Motor RH Circuit | |
| 3. Multiplex network switch assembly (rear RH side) | - | |
| 4. Power window regulator motor assembly (rear RH side) | - | |
| Window lock function does not operate | 1. Window lock signal circuit (PCT line) | Refer to Window Lock Signal Circuit |
| 2. Multiplex network switch assembly (front passenger side) | - | |
| 3. Multiplex network switch assembly (rear LH side) | - | |
| 4. Multiplex network switch assembly (rear RH side) | - | |
| 5. Multiplex network master switch assembly | - |
Factory Service Tools
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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.