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.
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HOMESERVICE MANUALSNISSAN-DATSUN2009SENTRA L4-2.0L (MR20DE)REPAIR AND DIAGNOSISWINDOWS AND GLASSWINDOWSTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSENCODER AND LIMIT SWITCH CHECK
2009 Nissan-Datsun Sentra L4-2.0L (MR20DE)
Encoder And Limit Switch Check
2009 Nissan-Datsun Sentra L4-2.0L (MR20DE)SECTION Encoder And Limit Switch Check
POWER WINDOW SYSTEM
Encoder and Limit Switch Check
1. CHECK DOOR WINDOW SLIDE MECHANISM
Check the following.
- Obstacles in window, glass molding, etc.
- Worn or deformed glass molding.
- Door sash tilted too far inward or outward.
- Door window regulator.
OK or NG
OK >> GO TO 2.
NG >> Remove obstacles or repair door window slide mechanism.
2. CHECK LIMIT SWITCH OPERATION
1. Turn ignition switch ON.
2. Check voltage between main power window and door lock/unlock switch connector D5 terminal 9 and ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness between main power window and door lock/unlock switch and front power window motor LH.
- OK: Replace front power window motor LH.
- NG: Replace or repair harness.
3. CHECK ENCODER
Measure voltage between main power window and door lock/unlock switch connector D5 terminal 13 and ground with oscilloscope when power window is in automatic closing operation.
OK or NG
OK >> Replace main power window and door lock/unlock switch.
NG >> Replace front power window motor LH.
RENDER: 1.0x
NO RELATED
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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.