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 Avalon XLSFACTORY OEM SERVICE PROCEDURE
System Tests: Notes
NOTE:
Before proceeding with any system test, ensure proper trouble shooting procedure was performed and multiplex control system operation was verified. See appropriate trouble shooting procedure for system application as listed under TROUBLE SHOOTING .
SYMPTOM INDEX (BODY CONTROL SYSTEM)
| System & Symptom | Test To Be Performed | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ignition Switch & Key Unlock Warning Switch System | ||||||||||||
| Ignition Switch Does Not Operate In Each Position | Test No. 1 | |||||||||||
| Key Unlock Warning System Buzzer Does Not Sound When Driver's Door Is Opened With Ignition Off & Ignition Key In Ignition Lock Cylinder | Test No. 2 | |||||||||||
| Key Unlock Warning System Buzzer Sounds When Ignition Switch Is In ACC Or ON Position | Test No. 3 | |||||||||||
| Headlight & Taillight System | ||||||||||||
| One Headlight Does Not Operate | Test No. 4 | |||||||||||
| All Headlights Do Not Operate | Test No. 5 | |||||||||||
| Low Beam Headlight Does Not Operate | Test No. 6 | |||||||||||
| High Beam Headlight Does Not Operate | Test No. 7 | |||||||||||
| Flash High Beam Headlight Feature Does Not Operate | Test No. 8 | |||||||||||
| Headlight Does Not Operate With Engine Running & Headlight Switch In OFF Position (Models With Daytime Running Lights Only) | Test No. 9 | |||||||||||
| One Taillight Does Not Operate | Test No. 10 | |||||||||||
| All Taillights Do Not Operate | Test No. 11 | |||||||||||
| Stoplight & Taillight Do Not Operate In Rear Combination Light Assembly | Test No. 12 | |||||||||||
| Automatic Turn Off System For Lighting System (1) | ||||||||||||
| Automatic Turn Off System Does Not Operate | Test No. 13 | |||||||||||
| Interior Lighting System | ||||||||||||
| Only One Interior Light Does Not Operate | Test No. 14 | |||||||||||
| All Interior Lights Do Not Operate | Test No. 15 | |||||||||||
| Room Light At Center Of Headliner Does Not Operate | Test No. 16 | |||||||||||
| Illuminated Entry System Does Not Operate | Test No. 17 | |||||||||||
| Front Personal Light At Front Of Headliner Does Not Operate | Test No. 18 | |||||||||||
| Rear Interior Light Does Not Operate | Test No. 19 | |||||||||||
| Vanity Light Does Not Operate | Test No. 20 | |||||||||||
| Luggage Compartment Light Does Not Operate | Test No. 21 | |||||||||||
| Instrument Panel | ||||||||||||
| Seat Belt Warning Light Does Not Operate | Test No. 22 | |||||||||||
| Open Door Warning Light Does Not Operate | Test No. 23 | |||||||||||
| Power Window Control System | ||||||||||||
| All Power Windows Will Not Operate | Test No. 24 | |||||||||||
| Driver's Side Front Door Power Window Will Not Operate | Test No. 25 | |||||||||||
| Passenger's Side Front Door Power Window Will Not Operate | Test No. 26 | |||||||||||
| Power Windows On Both Rear Doors Will Not Operate | Test No. 27 | |||||||||||
| Power Window On Only One Rear Door Will Not Operate | Test No. 28 | |||||||||||
| Power Door Lock Control System | ||||||||||||
| Power Door Lock System Does Not Operate On Any Door | Test No. 29 | |||||||||||
| Power Door Lock System Does Not Operate When Using Manual Switch | Test No. 30 | |||||||||||
| Power Door Lock System Does Not Operate When Using The Key | Test No. 31 | |||||||||||
| Two-Operation Unlock Function Does Not Operate (2) | Test No. 32 | |||||||||||
| Only One Power Door Lock Does Not Operate | Test No. 33 | |||||||||||
| Key Confinement Prevention Function Does Not Operate (3) | Test No. 34 | |||||||||||
| Auto Door Lock System Does Not Operate (4) | Test No. 35 | |||||||||||
| Trunk Opener System | ||||||||||||
| Trunk Opener System Does Not Operate | Test No. 36 | |||||||||||
| Keyless Entry System | ||||||||||||
| All Functions Of Keyless Entry System Will Not Operate | Test No. 37 | |||||||||||
| Lock Or Unlock Function Does Not Operate | Test No. 38 | |||||||||||
| Automatic Lock Function Operates Even If Door Is Opened Within 30 Seconds After All Doors Are Unlocked Using Keyless Entry System (5) | Test No. 39 | |||||||||||
| Keyless Entry System Operates But Buzzer Will Not Sound | Test No. 40 | |||||||||||
| Buzzer Sounds But Keyless Entry System Will Not Operate | Test No. 41 | |||||||||||
| Trunk Opener Will Not Operate Using Keyless Entry System | Test No. 42 | |||||||||||
| Power Mirror Control System (Models With Memory Power Mirrors Only) | ||||||||||||
| Power Mirror Does Not Operate | Test No. 43 | |||||||||||
| Power Mirror Operates Abnormally | Test No. 44 | |||||||||||
| Horn System | ||||||||||||
| Horn System Does Not Operate | Test No. 45 | |||||||||||
| Horns Operate All The Time | Test No. 46 | |||||||||||
| Only One Horn Operates | Test No. 47 | |||||||||||
| Horns Operate Abnormally | Test No. 48 | |||||||||||
|
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SYMPTOM INDEX (DRIVER DOOR CONTROL SYSTEM)
| System & Symptom | Test To Be Performed | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Power Window Control System | ||||||||||||||
| All Power Windows Will Not Operate | Test No. 49 | |||||||||||||
| Driver's Door Power Window Will Not Operate | Test No. 49 | |||||||||||||
| Auto Up Or Down Function For Power Window Does Not Operate (1) | Test No. 49 | |||||||||||||
| Jam Protection Function & Auto Up Or Down Function Does Not Operate On Power Window (2) | Test No. 50 | |||||||||||||
| All Power Windows Will Not Operate & Power Door Lock Does Not Operate | Test No. 51 | |||||||||||||
| All Power Windows Will Not Operate & Power Door Locks Operate | Test No. 52 | |||||||||||||
| Driver's Door Power Window Glass Will Not Move | Test No. 53 | |||||||||||||
| Key Off Power Window Function Does Not Operate (3) | Test No. 54 | |||||||||||||
| Power Door Lock Control System | ||||||||||||||
| Power Door Lock System Does Not Operate At All | Test No. 55 | |||||||||||||
| Power Door Lock System Does Not Operate When Using Manual Switch | Test No. 56 | |||||||||||||
| Power Door Lock System Does Not Operate When Using The Key | Test No. 57 | |||||||||||||
| Two-Operation Unlock Function Does Not Operate (4) | Test No. 57 | |||||||||||||
| Key Confinement Prevention Function Does Not Operate (5) | Test No. 58 | |||||||||||||
| Only One Power Door Lock Does Not Operate | Test No. 59 | |||||||||||||
| Auto Door Lock System Does Not Operate (6) | Test No. 60 | |||||||||||||
| Power Mirror Control System | ||||||||||||||
| Both Power Mirrors Do Not Operate | Test No. 61 | |||||||||||||
| One Side Of Power Mirror Does Not Operate | Test No. 62 | |||||||||||||
| Power Mirror Is Not Operated As Indicated By Power Mirror Switch | Test No. 63 | |||||||||||||
|
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SYMPTOM INDEX (PASSENGER DOOR CONTROL SYSTEM)
| System & Symptom | Test To Be Performed | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Power Window Control System | ||||||||||
| Power Window Will Not Operate | Test No. 64 | |||||||||
| Auto Up Or Down Function For Power Window Does Not Operate (1) | Test No. 64 | |||||||||
| Passenger's Door Power Window Glass Will Not Move | Test No. 65 | |||||||||
| Power Door Lock Control System | ||||||||||
| Power Door Lock System Does Not Operate At All | Test No. 66 | |||||||||
| Power Door Lock System Does Not Operate When Using Manual Switch | Test No. 67 | |||||||||
| Power Door Lock System Does Not Operate When Using The Key | Test No. 68 | |||||||||
| Two-Operation Unlock Function Does Not Operate (2) | Test No. 68 | |||||||||
| Key Confinement Prevention Function Does Not Operate (3) | Test No. 69 | |||||||||
| Only One Power Door Lock Does Not Operate | Test No. 59 | |||||||||
| Auto Door Lock System Does Not Operate (4) | Test No. 60 | |||||||||
| Power Mirror Control System | ||||||||||
| Both Power Mirrors Do Not Operate | Test No. 61 | |||||||||
| One Side Of Power Mirror Does Not Operate | Test No. 70 | |||||||||
| Power Mirror Is Not Operated As Indicated By Power Mirror Switch | Test No. 71 | |||||||||
|
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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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