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Nissan Sentra B18 (2020-2025) Service Manual: Power Supply and Ground Circuit. Intelligent Key Unit

Intelligent Key Unit

Diagnosis Procedure

Diagnosis Procedure

  1. CHECK FUSE

    1. Check that the following fuse is not blown:

      Terminal

      Signal name

      Fuse No.

      Capacity

      1

      Intelligent Key unit power supply

      31

      10 A

    Is the fuse blown?

    YES >>

    Replace the blown fuse after repairing the affected circuit.

    NO >>

    GO TO 2.

  2. CHECK POWER SUPPLY CIRCUIT

      1. Disconnect Intelligent Key unit connector.

      2. Check voltage between Intelligent Key unit connector and ground.

        Intelligent Key unit

        —

        Voltage

        (Approx.)

        Connector

        Terminal

        M155

        1

        Ground

        Battery voltage

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    Repair or replace harness or connectors.

  3. CHECK GROUND CIRCUIT

    1. Check continuity between Intelligent Key unit connector and ground.

      Intelligent Key unit

      —

      Continuity

      Connector

      Terminal

      M155

      29

      Ground

      Yes

    Is the inspection result normal?

    YES>>

    Inspection End.

    NO>>

    Repair or replace harness or connectors.

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