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Home › Nissan-Datsun › 2017 › NV1500 SV › Repair and Diagnosis › External Pages › Different car › Section 78 (Power Window Control System) › DTC/Circuit Diagnosis › Encoder Circuit › Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Nissan NV3500 HD, 2016 Nissan NV2500 HD, and 2016 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

  1. CHECK ENCODER OPERATION

    1. Turn ignition switch ON.
    2. Check signal between main power window and door lock/unlock switch connector D7 terminal 3 and ground with oscilloscope.
      Main power window and door lock/unlock switch Ground Signal
      (Reference value)
      Connector Terminal
      D7 3 -
      GNSJMKIA0070GB-070Courtesy of NISSAN NORTH AMERICA, INC.

    Is the inspection result normal?

    YES 

    Replace main power window and door lock/unlock switch. Refer to REMOVAL AND INSTALLATION .

    NO 

    GO TO STEP 2 

  2. CHECK ENCODER SIGNAL CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect main power window and door lock/unlock switch and front power window motor LH connectors.
    3. Check continuity between main power window and door lock/unlock switch connector D7 terminal 3 and front power window motor LH connector D9 terminal 5.
      Main power window and door lock/unlock switch Front power window motor LH Continuity
      Connector Terminal Connector Terminal
      D7 3 D9 5 Yes
    4. Check continuity between main power window and door lock/unlock switch connector D7 terminal 3 and ground.
      Main power window and door lock/unlock switch Ground Continuity
      Connector Terminal
      D7 3 - No

    Is the inspection result normal?

    YES 

    GO TO STEP 3 

    NO 

    Repair or replace harness.

  3. CHECK ENCODER POWER

    1. Connect main power window and door lock/unlock switch connector.
    2. Turn ignition switch ON.
    3. Check voltage between front power window motor LH connector D9 terminal 2 and ground.
      Front power window motor LH Ground Voltage
      Connector Terminal
      D9 2 - Battery voltage

    Is the inspection result normal?

    YES 

    GO TO STEP 5 

    NO 

    GO TO STEP 4 

  4. CHECK ENCODER POWER CIRCUIT

    1. Turn ignition switch OFF.
    2. Disconnect main power window and door lock/unlock switch.
    3. Check continuity between main power window and door lock/unlock switch connector D7 terminal 4 and front power window motor LH connector D9 terminal 2.
      Main power window and door lock/unlock switch Front power window motor LH Continuity
      Connector Terminal Connector Terminal
      D7 4 D9 2 Yes
    4. Check continuity between main power window and door lock/unlock switch connector D7 terminal 4 and ground.
      Main power window and door lock/unlock switch Ground Continuity
      Connector Terminal
      D7 4 - No

    Is the inspection result normal?

    YES 

    Replace main power window and door lock/unlock switch. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness.

  5. CHECK ENCODER GROUND

    1. Turn ignition switch OFF.
    2. Check continuity between front power window motor LH connector D9 terminal 4 and ground.
      Front power window motor LH Ground Continuity
      Connector Terminal
      D9 4 - Yes

    Is the inspection result normal?

    YES 

    Replace front power window motor LH. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness.

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