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APDTY 853618 Power Window Motor Front Left 00-03 Maxima, 00-01 I30, & 00-04 I35 |
How to Check the Encoder & Limit Switch
1) Inspect suspect window slide mechanism. Ensure slide is free from debris or damage. Check for worn molding. Ensure the window is not binding in the molding. Repair as needed. If the window is able to slide freely, go to the next step.
2) Disconnect suspect window regulator connector. Access power window switch harness connector. Do not disconnect the connector. Turn ignition on. Back-probe connector, measure voltage between ground and terminal No. 9. If voltage is present, go to next step. If 5 volts is NOT present, replace the window switch.
3) Connect suspect window regulator connector. Ensure the window is fully open. Access power window switch harness connector. Do not disconnect the connector. Turn ignition on. Back-probe connector. Measure voltage between ground and terminal No. 9. Raise window while monitoring voltage. Voltage should remain at zero volts until the window is within .59″ (15mm) of being closed. Once the window opening is less than .59″ (15mm), the voltage should be 5 volts. If voltage is as specified, go to step 5. If voltage is not as specified, go to next step
4) Reset suspect window limit switch (located on window motor). Fully close window. Press and hold reset switch on the window regulator. Fully lower window. Release reset switch. Fully close window. Repeat step 3 at least 10 times. If voltage is as specified, go to next step. If voltage is not as specified, replace the window regulator motor.
5) Further testing will require using an oscilloscope. Turn ignition on. Back-probe suspect window switch connector, measure voltage between ground and terminal No. 9. Raise widow using automatic function square wave pattern should oscillate between zero to 5 volts. If the oscilloscope pattern is as specified, replace the power window switch. If the oscilloscope pattern is not as specified, replace the window regulator motor.
