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
Jam Protection Pulse Switch
NOTE:
Jam protection pulse switch may also be referred to as jam protection pulse sensor or pulse sensor.
- Jam protection pulse switch is used only on the power window on the driver's side front door. Remove door panel for access to electrical connector at power window motor. Disconnect electrical connector for power window motor.
- To check operation of jam protection pulse switch in the window upward position, ensure window is half way open. Connect voltmeter to specified terminals on electrical connector for power window motor. Perform STEP 1 in illustration. See Fig 1. Using jumper wires, apply battery voltage and ground to specified terminals on electrical connector for power window motor. Perform STEP 1 in illustration. See Fig 1. Check that pulse is generated when power window motor is operating and window is moving upward. If pulse is generated as specified, go to next step. If pulse is not generated as specified, replace power window motor assembly. See POWER WINDOWS - CARS article.
- To check operation of jam protection pulse switch in the window downward position, ensure window is fully upward in the closed position. Connect voltmeter to specified terminals on electrical connector for power window motor. Perform STEP 2 in illustration. See Fig 1. Using jumper wires, apply battery voltage and ground to specified terminals on electrical connector for power window motor so that polarity is reversed. Perform STEP 2 in illustration. See Fig 1. Check that pulse is generated when power window motor is operating and window is moving downward. Remove jumper wires and voltmeter. If pulse is generated as specified, jam protection pulse switch is okay. If pulse is not generated as specified, replace power window motor assembly. See POWER WINDOWS - CARS article.
CAUTION:
When testing operation of jam protection pulse switch, ensure jumper wires are properly connected to prevent damage to jam protection pulse switch.
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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