Nissan Sentra manuals

Nissan Sentra B18 (2020-2025) Service Manual: Dtc Diagnosis Procedure

Nissan Sentra B18 (2020-2025) Service Manual / Body Exterior, Doors, Roof & Vehicle Security / Power Window Control System :: Dtc/circuit Diagnosis / U1c02-08 Lin Door / Dtc Diagnosis Procedure

DTC Diagnosis Procedure

  1. CHECK FRONT POWER WINDOW MOTOR LH POWER SUPPLY AND GROUND CIRCUIT

    1. Check front power window motor LH power supply and ground circuit.

      Refer to Diagnosis Procedure.

    Is the inspection result normal?

    YES >>

    GO TO 2.

    NO >>

    Repair or replace harness.

  2. CHECK LIN COMMUNICATION SIGNAL

      1. Ignition switch OFF, and then wait for 3 minutes with front LH door open.

        Note:

        • Even after ignition switch OFF, power is supplied to accessories for a certain amount of time by the AUTO ACC function.

        • When Nissan Sentra vehicle is operated while on standby, power may be supplied to accessories.

      2. Disconnect front power window motor LH connector.

      3. Ignition switch ON.

      4. Check signal between front power window motor LH harness connector and ground using an oscilloscope.

        (+)

        (−)

        Signal

        (Reference value)

        Front power window motor LH

        Connector

        Terminal

        D8

        6

        Ground

    Is the inspection result normal?

    YES >>

    Replace front power window motor LH. Refer to Removal and Installation.

    NO >>

    GO TO 3.

  3. CHECK LIN COMMUNICATION CIRCUIT

      1. Ignition switch OFF.

      2. Disconnect BCM connector.

      3. Check continuity between BCM harness connector and front power window motor LH harness connector.

        BCM

        Front power window motor LH

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        M84

        24

        D8

        6

        Yes

      4. Check continuity between BCM harness connector and ground.

        BCM

        —

        Continuity

        Connector

        Terminal

        M84

        24

        Ground

        No

    Is the inspection result normal?

    YES >>

    Check intermittent incident. Refer to Intermittent Incident.

    NO >>

    Repair or replace harness.

Confirmation Procedure
Confirmation Procedure PERFORM DTC CONFIRMATION PROCEDURE CONSULT Ignition switch ON. ...

Power Supply and Ground Circuit
...

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