2012 Infiniti M37 BaseFACTORY OEM SERVICE PROCEDURE

Component Function Check

  1. PERFORM COMPONENT FUNCTION CHECK-I 

    Without CONSULT 

    1. Start engine and warm it up to the normal operating temperature.
    2. Turn ignition switch OFF and wait at least 10 seconds.
    3. Start engine and keep the engine speed between 3, 500 and 4, 000 rpm for at least 1 minute under no load.
    4. Let engine idle for 1 minute.
    5. Check the voltage between ECM harness connector terminals under the following condition.
      DTC ECM Condition Voltage
      Connector + -
      Terminal Terminal
      P0137 F102 76 84 Revving up to 4, 000 rpm under no load at least 10 times The voltage should be above 0.70 V at least once during this procedure.
      P0157 80

      Is the inspection result normal? 

      YES: INSPECTION END

      NO: GO TO 2.

  2. PERFORM COMPONENT FUNCTION CHECK-II 

    Check the voltage between ECM harness connector terminals under the following condition.

    DTC ECM Condition Voltage
    Connector + -
    Terminal Terminal
    P0137 F102 76 84 Keeping engine at idle for 10 minutes The voltage should be above 0.70 V at least once during this procedure.
    P0157 80

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: GO TO 3.

  3. PERFORM COMPONENT FUNCTION CHECK-III 

    Check the voltage between ECM harness connector terminals under the following condition.

    DTC ECM Condition Voltage
    Connector + -
    Terminal Terminal
    P0137 F102 76 84 Coasting from 80 km/h (50 MPH) in D position The voltage should be above 0.70 V at least once during this procedure.
    P0157 80

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Go 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.