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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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