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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 476 (Engine Control System (DTC/Circuit Diagnosis) (3 Of 3)) >> DTC/Circuit Diagnosis >> Ignition Signal >> Component Function Check

Component Function Check

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.
  1. INSPECTION START 

    Turn ignition switch OFF, and restart engine.

    Does the engine start?

    YES

    GO TO 2.

    NO

    Proceed to DTC Diagnosis Procedure .

  2. IGNITION SIGNAL FUNCTION 

    SYMBOL With CONSULT

    1. Perform "POWER BALANCE" in "ACTIVE TEST" mode of "ENGINE" using CONSULT.
    2. Check that each circuit produces a momentary engine speed drop.

    SYMBOL Without CONSULT

    1. Let engine idle.
    2. Check the voltage signal between ECM harness connector and ground with an oscilloscope.

      ECM

      Voltage signal

      +

      -

      Connector

      Terminal

      Connector

      Terminal

      F77

      103

      E16

      128

      G08435929Courtesy of NISSAN NORTH AMERICA, INC.

      106

      113

      104

      107

      114

      NOTE: The pulse cycle changes depending on rpm at idle.

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Proceed to DTC Diagnosis Procedure .