2013 Infiniti M56 BaseFACTORY OEM SERVICE PROCEDURE

Component Function Check

  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: Proceed 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: Proceed to "DIAGNOSIS PROCEDURE ".

  3. CHECK IGNITION SIGNAL FUNCTION 

    WITHOUT CONSULT

    1. Let engine idle.
    2. Read the voltage signal between ECM harness connector terminals under the following conditions with an oscilloscope.
      ECM Voltage signal
      Cylinder + -
      Connector Terminal Connector Terminal
      1 F110 12 M160 175
      G08897216Courtesy of NISSAN NORTH AMERICA, INC.
      2 13
      3 14
      4 15
      5 17
      6 18
      7 19
      8 20
      NOTE: The pulse cycle changes depending on rpm at idle.

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: Proceed to "DIAGNOSIS PROCEDURE ".

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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