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Nissan Sentra Service Manual: Encoder

Nissan Sentra Service Manual / Body exterior, doors, roof & vehicle security / Power window control system / Dtc/circuit diagnosis / Encoder

Driver side

DRIVER SIDE : Description

Detects condition of the front power window motor lh operation and transmits to main power window and door lock/unlock switch as pulse signal.

DRIVER SIDE : Component Function Check

1. Check encoder operation

Check front door glass lh perform auto open/close operation normally with main power window and door lock/unlock switch.

Is the inspection result normal? Yes >> encoder operation is ok.

No >> refer to pwc-50, "driver side : diagnosis procedure".

DRIVER SIDE : Diagnosis Procedure

Regarding wiring diagram information, refer to pwc-18, "wiring diagram".

Encoder circuit check

1. Check encoder operation

  1. Connect front power window motor lh.
  2. Turn ignition switch ON.
  3. Check signal between main power window and door lock/unlock switch connector d5 and ground with oscilloscope.

Is the inspection result normal?


Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".

NO >> GO TO 2.

2. Check front power window motor lh power supply

  1. Turn ignition switch on.
  2. Check voltage between front power window motor lh connector d8 and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 4.

NO >> GO TO 3.

3. Check harness continuity 1

  1. Turn ignition switch OFF.
  2. Disconnect main power window and door lock/unlock switch and front power window motor lh.
  3. Check continuity between main power window and door lock/unlock switch connector D5 and front power window motor connector D8.


  1. Check continuity between main power window and door lock/unlock switch connector d5 and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> Replace main power window and door lock/unlock switch. Refer to PWC-70, "Removal and Installation".

After that, refer to PWC-29, "Work Procedure".

NO >> Repair or replace harness or connectors.

4. Check ground circuit

  1. Turn ignition switch off.
  2. Disconnect front power window motor LH.
  3. Check continuity between front power window motor lh connector d8 and ground.

Is the inspection result normal?


Is the inspection result normal? Yes >> go to 6.

No >> go to 5.

5. Check harness continuity 2

  1. Disconnect main power window and door lock/unlock switch.
  2. Check continuity between main power window and door lock/unlock switch connector d5 and front power window motor lh connector d8.

Is the inspection result normal?


Is the inspection result normal? YES >> Check main power window and door lock/unlock switch. Refer to PWC-36, "POWER WINDOW MAIN SWITCH : Component Inspection".

NO >> Repair or replace the harness or connectors.

6. Check harness continuity 3

  1. Disconnect main power window and door lock/unlock switch.
  2. Check continuity between main power window d5 and door lock/unlock switch connector and front power window motor lh connector d8.


  1. Check continuity between main power window and door lock/unlock switch connector d5 and ground.

Is the inspection result normal?


Is the inspection result normal? Yes >> replace front power window motor lh. Refer to gw-16, "removal and installation". After that, refer to pwc-29, "work procedure".

No >> repair or replace harness or connectors.

DRIVER SIDE : Special Repair Requirement

1. Perform initialization procedure

Perform initialization procedure.

Refer to pwc-29, "work procedure".

Is the inspection result normal? Yes >> inspection end.

No >> check intermittent incident. Refer to gi-39, "intermittent incident".

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