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.
Power Window Motor Test
Motor Test
- Remove the door panel (see FRONT DOOR PANEL REMOVAL/INSTALLATION ).
- Disconnect the 6P connector (A) from the power window motor.
- Test the motor in each direction by connecting battery power and ground as shown (see Fig 2). When the motor stops running, disconnect one lead immediately.
- If the motor does not run or fails to run smoothly, replace it.
Pulser Test
- Measure the voltage between the terminals.
Common
There should be battery voltage between the No. 6 (No. 1)* (+) and No. 5 (No. 2)* (-(terminals when the ignition switch is ON (II).
* : Front passenger's and left rear power window motor
Driver's power window motor
Connect an analog voltmeter between the No. 2 (PLSA) (+) and No. 5 (SGND) (-) terminals, and between No. 3 (PLSB) (+) and No. 5 (SGND) (-) terminals, then run the power window motor down or up. The voltmeter needle should move back and forth alternately (a digital voltmeter should show the average voltage between 0-5 V).
Front passenger's power window motor/Left rear power window motor
Connect an analog voltmeter between the No. 5 (PLSA) (+) and No. 2 (SGND) (-) terminals, and between No. 4 (PLSB) (+) and No. 2 (SGND) (-) terminals, then run the power window motor down or up. The voltmeter needle should move back and forth alternately (a digital voltmeter should show the average voltage between 0-5 V).
Right rear power window motor
Connect an analog voltmeter between the No. 2 (PLSA) (+) and No. 5 (SGND) (-) terminals, and between No. 3 (PLSB) (+) and No. 5 (SGND) (-) terminals, then run the power window motor down or up. The voltmeter needle should move back and forth alternately (a digital voltmeter should show the average voltage between 0-5 V).
- If the voltage is not as specified, do these input tests:
- Driver's MPCS unit input test (see DRIVER'S MPCS UNIT INPUT TEST ).
- Front passenger's MPCS unit input test (see FRONT PASSENGER'S MPCS UNIT INPUT TEST ).
- Left power window switch input test (see LEFT REAR POWER WINDOW SWITCH INPUT TEST ).
- Right power window switch input test (see RIGHT REAR POWER WINDOW SWITCH INPUT TEST ).
- If the input tests are OK, replace the power window motor.
- Reset the power window control unit (see RESETTING THE POWER WINDOW CONTROL UNIT ).
Use the Manual With the Right Hardware
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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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