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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 94 (Starting System (Circuit Diagnosis)) >> Circuit Diagnosis >> S Connector Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK STARTER MOTOR MAGNETIC SWITCH CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect starter motor connector F28.
    3. Shift transmission into P (Park) or N (Neutral).
    4. Check voltage between starter motor connector F28 and ground with the ignition in START.

      (+)

      (-)

      Condition

      Voltage

      (Approx.)

      Connector

      Terminal

      F28

      S

      Ground

      Ignition switch in START position

      Battery voltage

    Is the inspection result normal?

    YES

    Magnetic switch circuit is OK. Further inspection is necessary. Refer to Work Flow (With DSS-5000P NI) or Work Flow (Without DSS-5000P NI) .

    NO

    GO TO 2

  2. CHECK CONNECTOR 
    1. Turn ignition switch OFF.
    2. Check the IPDM E/R connector F49 and starter motor connector F28 for damage, bent pins and loose connections.

    Is the inspection result normal?

    YES

    GO TO 3 .

    NO

    Repair the terminal and connector.

  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) 
    1. Disconnect IPDM E/R connector F49.
    2. Check continuity between starter motor connector F28 and IPDM E/R connector F49.

      Connector

      Terminal

      Connector

      Terminal

      Continuity

      F28

      S

      F49

      51

      Yes

    3. Check continuity between starter motor connector F28 and ground.

      Connector

      Terminal

      -

      Continuity

      F28

      S

      Ground

      No

    Is the inspection result normal?

    YES

    Further inspection is necessary. Refer to Work Flow (With DSS-5000P NI) or Work Flow (Without DSS-5000P NI) .

    NO

    Repair the harness.