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.
Encoder Circuit Check Front RH
- CHECK FRONT POWER WINDOW MOTOR RH POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect front power window motor RH.
- Turn ignition switch ON.
- Check voltage between front power window motor RH connector D104 terminal 4 and ground.
4 (G/R) - Ground: Approx. 10V
OK or NG
- OK: GO TO 3 .
- NG: GO TO 2.
- CHECK HARNESS CONTINUITY
- Turn ignition switch OFF.
- Disconnect front power window motor RH and power window and door lock/unlock switch RH.
- Check continuity between front power window motor RH connector D104 terminal 4 and power window and door lock/unlock switch RH connector D105 terminal 4.
4 (G/R) - 4 (G/R): Continuity should exist.
Fig 2: Checking Continuity Between Front Power Window Motor And Power Window Switch Connector TerminalCourtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK: Replace power window and door lock/unlock switch RH.
- NG: Repair or replace harness.
- CHECK ENCODER GROUND
- Turn ignition switch OFF.
- Check continuity between front power window motor RH connector D104 terminal 6 and ground.
6 (W/B) - Ground: Continuity should exist.
OK or NG
- OK: GO TO 5 .
- NG: GO TO 4.
- CHECK ENCODER GROUND CIRCUIT
- Disconnect power window and door lock/unlock switch RH.
- Check continuity between front power window motor RH connector D104 terminal 6 and power window and door lock/unlock switch RH connector D105 terminal 3.
6 (W/B) - 3 (W/B): Continuity should exist.
OK or NG
- OK: Replace power window and door lock/unlock switch RH.
- NG: Repair or replace harness.
- CHECK ENCODER SIGNAL
- Connect front power window motor RH.
- Turn ignition switch ON.
- Check the signal between power window and door lock/unlock switch RH connector and ground with oscilloscope.
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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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