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DTC Diagnosis Procedure

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

The terminal "2" (L) circuit controls the charge warning lamp. The charge warning lamp illuminates when the ignition switch is set to ON or START. When the generator is providing sufficient voltage with the engine running, the charge warning lamp will go off. If the charge warning lamp illuminates with the engine running, a malfunction is indicated.

  1. CHECK "L" TERMINAL CONNECTION 
    1. Turn ignition switch OFF.
    2. Check if "L" terminal is clean and tight.

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Repair "L" terminal connection. Confirm repair by performing system test using the DSS-5000P NI. Refer to applicable Instruction Manual for proper testing procedures.

  2. CHECK "L" TERMINAL CIRCUIT (OPEN) 
    1. Disconnect the generator connector.
    2. Apply ground to generator harness connector terminal.
    3. Check condition of the charge warning lamp with the ignition switch in the ON position.

      Generator

      Ground

      Condition

      Connector

      Terminal

      Ignition switch position

      Charge warning lamp

      E205

      2

      ON

      Illuminate

    Does it illuminate?

    YES

    "L" terminal circuit is normal. Refer to Work Flow (With DSS-5000P NI) or Work Flow (Without DSS-5000P NI) .

    NO

    GO TO 3.

  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) 
    1. Disconnect the battery cable from the negative terminal.
    2. Disconnect the combination meter connector.
    3. Check continuity between generator harness connector and combination meter harness connector.

      Generator

      Combination meter

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      E205

      2

      M23

      30

      Yes

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair or replace the harness or connectors.

  4. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) 

    Check continuity between combination meter harness connector and fuse block (J/B).

    Combination meter

    Fuse block (J/B)

    Continuity

    Connector

    Terminal

    Connector

    Terminal

    M23

    32

    M39

    1Q

    Yes

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Repair or replace the harness or connectors.

  5. CHECK POWER SUPPLY CIRCUIT 
    1. Connect the battery cable to the negative terminal.
    2. Check voltage between combination meter harness connector and ground.

      (+)

      (-)

      Condition

      Voltage

      (Approx.)

      Combination meter

      Connector

      Terminal

      M23

      32

      Ground

      When the ignition switch is in ON position

      Battery voltage

    Is the inspection result normal?

    YES

    Replace the combination meter. Refer to Removal and Installation .

    NO

    Repair or replace the harness or connectors.