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Home >> Infiniti >> 2013 >> M35h >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes & Symptom Tests) >> DTC/Circuit Diagnosis >> Ignition Signal >> Component Function Check
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Component Function Check

  1. INSPECTION START 
    1. Turn ignition switch OFF.
    2. Perform "INSPECTION MODE 5". Refer to "WORK PROCEDURE (INSPECTION MODE 5) ".
    3. Start 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 of "ENGINE" with CONSULT.
    2. Make sure 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 under the following conditions with an oscilloscope.
    ECM Voltage signal
    + -
    Connector Terminal Connector Terminal
    F101 11 M107 128
    G08892229
    12
    15
    16
    19
    20
    NOTE: The pulse cycle changes depending on RPM at idle.

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Go to "DIAGNOSIS PROCEDURE ".