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

Diagnosis Procedure

Diagnosis Procedure

  1. CHECK FUSE

    Check that the following fuse is not blown:

    Signal name

    Fuse No.

    Ignition power supply

    2 (10 A)

    Is the fuse blown?

    YES >>

    Replace the blown fuse after repairing the affected circuit.

    NO >>

    GO TO 2.

  2. CHECK ADAS CONTROL UNIT 2 POWER SUPPLY CIRCUIT

    Check voltage between ADAS control unit 2 harness connector and ground.

    Terminal

    Condition

    Voltage

    (Approx.)

    (+)

    (–)

    ADAS control unit 2

    Ground

    Ignition switch

    Connector

    Terminal

    M148

    16

    OFF

    0 V

    ON

    Battery voltage

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    Repair the ADAS control unit 2 power supply circuit.

  3. CHECK ADAS CONTROL UNIT 2 GROUND CIRCUIT

    1. Turn the ignition switch OFF.

    2. Disconnect the ADAS control unit 2 harness connector.

    3. Check for continuity between ADAS control unit 2 harness connector and ground.

      ADAS control unit 2

      Ground

      Continuity

      Connector

      Terminal

      M148

      2

      Yes

    Is the inspection result normal?

    YES >>

    Inspection End.

    NO >>

    Repair the ADAS control unit 2 ground circuit.

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