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.
On-Vehicle Inspection
- INSPECT JAM PROTECTION FUNCTION CAUTION: Be careful that any part of your body is not caught when checking.
HINT:
In the case of resetting the limit switch, perform checking after repeating the up and down operation of the glass with automatic operation.
- Confirmation of AUTO up operation:
Confirm that the window can be fully closed with AUTO up operation.
- Checking the operation of the jam protection function:
- Move the window up with AUTO up operation and check that the window goes down when it touches the hammer handle.
- Confirm that the window stops going down at about 200 mm (7.87 in).
HINT:
In the case of removing the glass, glass guide, regulator, etc., be sure to perform the check of the jam protection function. If the jam protection does not function properly, adjust the power window motor reset switch and the pulse switch.
- Confirmation of AUTO up operation:
- ADJUST POWER WINDOW REGULATOR MOTOR ASSEMBLY (JAM PROTECTION RESET SWITCH AND PULSE SWITCH)
HINT:
- If the jam protection does not function properly, perform the following procedure.
- It is necessary to reset the power window motor (in the initial position for the limit switch) when separating the window regulator from the power window motor or operating the window regulator with the door glass not installed.
- Remove the power window regulator motor assembly (seeDISASSEMBLY
).
HINT:
Place the matchmarks on the power window motor and the window regulator gear.
- Connect the power window motor and the power window switch to the wire harness of the vehicle.
- Turn the ignition switch ON and operate the power window switch to idle the power window motor in the up direction for more than 6 rotations or 4 seconds.
- Assemble the power window motor and the regulator.
HINT:
- Install the motor when the regulator arm is below the middle point.
- Align the matchmarks on the power window motor and the window regulator gear when installing the power window motor.
- Assemble the power window regulator and the door glass.
HINT:
Never rotate the motor in the down direction until the window glass installation is completed.
- Connect the power window switch to the wire harness and turn the ignition switch ON.
- Repeat the UP and DOWN operation several times manually.
- Check if AUTO UP -> AUTO DOWN operates in automatic operation.
HINT:
- Take care because the jam protection function does not operate just after resetting.
- Reset the regulator again when performing the reverse operation after closing the window fully using the AUTO UP operation.
- Check the power window function.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.