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.
2001 Toyota PriusFACTORY OEM SERVICE PROCEDURE
Body Control Systems
- Description & Operation
- Component Locations
- Service Precautions
- Trouble Shooting
- System Tests
- Notes
- Test No. 1: All Power Windows Will Not Operate
- Test No. 2: Passenger's Side Front Door Or Rear Door Power Window Will Not Operate
- Test No. 3: Power Door Locks May Not Be Locked Or Unlocked When Using Power Door Lock Control Switch
- Test No. 4: Two-Operation Unlock Function Does Not Operate
- Test No. 5: Key Confinement Prevention Function Does Not Operate
- Test No. 6: Each Door Does Not Lock & Unlock
- Test No. 7: Luggage Compartment Door Opener Function Does Not Operate
- Test No. 8: All Functions Of Keyless Entry System Will Not Operate
- Test No. 9: Lock Or Unlock Function Does Not Operate
- Test No. 10: Automatic Lock Function Operates Even If Door Is Opened Within 30 Seconds After All Doors Are Unlocked Using Keyless Entry System
- Test No. 11: Illuminated Entry System Does Not Operate
- Test No. 12: Headlights Do Not Operate
- Test No. 13: Taillights Do Not Operate
- Test No. 14: Automatic Turn Off System For Lighting System Does Not Operate
- Test No. 15: Driver's Seat Belt Warning Light Does Not Turn Off
- Test No. 16: Passenger's Seat Belt Warning Light Does Not Turn Off
- Test No. 17: Anti-Theft System Indicator Light Does Not Blink When Anti-Theft System Is Set
- Test No. 18: Body Electronic Control Unit Does Not Operate
- Test No. 19: Power Window(S) Will Not Operate, Or Auto Up Or Down Function For Power Window Does Not Operate
- Test No. 20: Jam Protection Function & Auto Up Or Down Function Does Not Operate On Power Window
- Test No. 21: Any Other Parts On Driver's Side Front Door Do Not Operate
- Component Tests
- Notes
- Daytime Running Light Relay
- Door Courtesy Switch
- Door Key Lock & Unlock Switch
- Door Lock Control Switch
- Door Lock Motor
- Door Unlock Detection Switch
- DRL Relay
- Headlight Control Switch
- Headlight Dimmer Relay
- Headlight Relay
- Interior Light
- Jam Protection Limit Switch
- Jam Protection Pulse Switch
- Key Unlock Warning Switch
- Luggage Compartment Door Courtesy Switch
- Power Relay
- Power Window Master Switch
- Power Window Switch
- Seat Belt Buckle Switch
- Taillight Relay
- Pin Voltage Tests
- Removal & Installation
- Wiring Diagrams
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.
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