2011 Infiniti EX35 Base, AWDFACTORY OEM SERVICE PROCEDURE

Diagnosis Procedure

  1. CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect fuel injector harness connector.
    3. Turn ignition switch ON.
    4. Check the voltage between fuel injector harness connector and ground.
    VOLTAGE SPECIFICATION

    Fuel injector Ground Voltage
    Cylinder Connector Terminal
    1 F21 1 Ground Battery voltage
    2 F22 1
    3 F23 1
    4 F24 1
    5 F25 1
    6 F26 1

    Is the inspection result normal? 

    YES: GO TO  3.

    NO: GO TO 2.

  2. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors E3, F1
    • IPDM E/R harness connector E7
    • 10 A fuse (No. 44)
    • Harness for open or short between fuel injector and fuse

    Repair open circuit or short to ground or short to power in harness or connectors.

  3. CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between fuel injector harness connector and ECM harness connector.
      CONTINUITY SPECIFICATION

      Fuel injector ECM Continuity
      Cylinder Connector Terminal Connector Terminal
      1 F21 2 F102 89 Existed
      2 F22 2 85
      3 F23 2 81
      4 F24 2 90
      5 F25 2 86
      6 F26 2 82
    4. Also check harness for short to ground and short to power.

    Is the inspection result normal? 

    YES: GO TO 4.

    NO: Repair open circuit or short to ground or short to power in harness or connectors.

  4. CHECK FUEL INJECTOR

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 5.

    NO: Replace malfunctioning fuel injector.

  5. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    Is the inspection result normal? 

    YES: Replace IPDM E/R.

    NO: Repair open circuit or short to ground or short to power in harness or connectors.

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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