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

Nissan Sentra B18 (2020-2025) Service Manual / Body Exterior, Doors, Roof & Vehicle Security / Door & Lock :: Dtc/circuit Diagnosis / B203e-14 Outside Antenna / Dtc Diagnosis Procedure

DTC Diagnosis Procedure

  1. CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 1

      1. Ignition switch ON.

      2. Check signal between Intelligent Key unit harness connector and ground using oscilloscope.

        (+)

        (–)

        Condition

        Signal

        (Reference value)

        Intelligent Key unit

        Connector

        Terminal

        M155

        35

        Ground

        When the front door request switch LH is operated with push-button ignition switch ON

        When Intelligent Key is in the antenna detection area

        When Intelligent Key is not in the antenna detection area

        36

        When Intelligent Key is in the antenna detection area

        When Intelligent Key is not in the antenna detection area

    Is the inspection result normal?

    YES >>

    Replace Intelligent Key unit. Refer to Removal and Installation.

    NO >>

    GO TO 2.

  2. CHECK OUTSIDE KEY ANTENNA CIRCUIT

      1. Ignition switch OFF.

      2. Disconnect Intelligent Key unit connector and outside key antenna (rear door LH) connector.

      3. Check continuity between Intelligent Key unit harness connector and outside key antenna (rear door LH) connector.

        Intelligent Key unit

        Outside key antenna (rear door LH)

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        M155

        35

        D209

        2

        Yes

        36

        1

      4. Check continuity between Intelligent Key unit harness connector and ground.

        Intelligent Key unit

        —

        Continuity

        Connector

        Terminal

        M155

        35

        Ground

        No

        36

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    Repair or replace harness.

  3. CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL 2

      1. Replace outside key antenna (rear door LH). (New antenna or other antenna)

      2. Connect Intelligent Key unit connector and outside key antenna (rear door LH) connector.

      3. Ignition switch ON.

      4. Check signal between Intelligent Key unit harness connector and ground using oscilloscope.

        (+)

        (–)

        Condition

        Signal

        (Reference value)

        Intelligent Key unit

        Connector

        Terminal

        M155

        35

        Ground

        When the front door request switch LH is operated with push-button ignition switch ON

        When Intelligent Key is in the antenna detection area

        When Intelligent Key is not in the antenna detection area

        36

        When Intelligent Key is in the antenna detection area

        When Intelligent Key is not in the antenna detection area

    Is the inspection result normal?

    YES >>

    Replace outside key antenna (rear door LH). Refer to Removal and Installation.

    NO >>

    Replace Intelligent Key unit. Refer to Removal and Installation.

Confirmation Procedure
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B203f-14 Outside Antenna
...

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