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Nissan Sentra B18 (2020-2025) Service Manual: Combination Switch Output Circuit. Diagnosis Procedure

Diagnosis Procedure

Diagnosis Procedure

  1. CHECK OUTPUT 1 - 6 CIRCUIT FOR OPEN

      1. Ignition switch OFF.

      2. Disconnect BCM connector and combination switch connectors.

      3. Check continuity between BCM harness connector and combination switch harness connector.

        Combination switch signal

        BCM

        Combination switch

        Continuity

        Connector

        Terminal

        Connector

        Terminal

        OUTPUT 1

        M83

        48

        M28

        7

        Yes

        OUTPUT 2

        49

        15

        OUTPUT 3

        53

        10

        OUTPUT 4

        52

        5

        OUTPUT 5

        50

        2

        OUTPUT 6

        51

        12

    Is the inspection result normal?

    YES >>

    GO TO 2.

    NO >>

    Repair harness or connectors.

  2. CHECK OUTPUT 1 - 6 CIRCUIT FOR SHORT

    1. Check for continuity between BCM harness connector and ground.

      Combination switch signal

      BCM

      —

      Continuity

      Connector

      Terminal

      OUTPUT 1

      M83

      48

      Ground

      No

      OUTPUT 2

      49

      OUTPUT 3

      53

      OUTPUT 4

      52

      OUTPUT 5

      50

      OUTPUT 6

      51

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    Repair harness or connectors.

  3. CHECK COMBINATION SWITCH OUTPUT SIGNAL

      1. Connect BCM connector and combination switch connector.

      2. Ignition switch ON.

      3. Turn ON any switch in the system that is malfunctioning.

      4. Check voltage between BCM harness connector and ground.

        Combination switch signal

        (+)

        (−)

        Voltage

        (Approx.)

        BCM

        Connector

        Terminal

        OUTPUT 1

        M83

        48

        Ground

        Refer to Reference Value.

        OUTPUT 2

        49

        OUTPUT 3

        53

        OUTPUT 4

        52

        OUTPUT 5

        50

        OUTPUT 6

        51

    Is the inspection result normal?

    YES>>

    Replace BCM. Refer to Removal and Installation.

    NO>>

    Replace combination switch. Refer to Removal and Installation.

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