LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2013 >> QX56 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 359 (Engine Control System - Component Testing (Except CROSSCABRIOLET)) >> Ignition Signal >> Component Function Check
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Component Function Check

WARNING: This page is about a different car, the 2013 Nissan Murano. 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-1: With CONSULT: GO TO 2.

    YES-2: Without CONSULT: GO TO  3.

    NO: Go to "DIAGNOSIS PROCEDURE ".

  2. CHECK IGNITION SIGNAL FUNCTION 

    With CONSULT 

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

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: Go to "DIAGNOSIS PROCEDURE ".

  3. CHECK IGNITION SIGNAL FUNCTION 

    Without CONSULT 

    1. Let engine idle.
    2. Read the voltage signal between ECM harness connector terminals with an oscilloscope.
      ECM Voltage signal
      + -
      Connector Terminal Connector Terminal
      F7 9 E16 112
      G08955383Courtesy of NISSAN NORTH AMERICA, INC.
      10
      11
      18
      19
      21
      NOTE: The pulse cycle changes depending on rpm at idle.

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: Go to "DIAGNOSIS PROCEDURE ".