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Home >> Infiniti >> 2012 >> FX50 >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (VK50VE) - FX50 - DTC U0101, U0113, U1003, U1001, U1024 & P006A Through P0133 / P0153 >> DTC P0106: Manifold Absolute Pressure Sensor >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK INTAKE SYSTEM

    Check the following for connection:

    • Air duct
    • Vacuum hoses
    • Intake air passage between air duct and intake manifold.

    Is the inspection result normal? 

    YES: GO TO 2.

    NO: Repair or replace ground connection.

  2. CHECK GROUND CONNECTION
    1. Turn ignition switch OFF.
    2. Check ground connection M95. Refer to Ground Inspection in "CIRCUIT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 3.

    NO: Repair or replace ground connection.

  3. CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR POWER SUPPLY CIRCUIT FOR OPEN AND SHORT
    1. Disconnect manifold absolute pressure (MAP) sensor harness connector.
    2. Turn ignition switch ON.
    3. Check the voltage between manifold absolute pressure (MAP) sensor harness connector and ground.
    Manifold absolute pressure (MAP) sensor Ground Voltage (V)
    Connector Terminal
    F65 1 Ground Approx. 5

    Is the inspection result normal? 

    YES: GO TO 4.

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

  4. CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between manifold absolute pressure (MAP) sensor harness connector and ECM harness connector.
      Manifold absolute pressure (MAP) sensor ECM Continuity
      Connector Terminal Connector Terminal
      F65 3 F111 70 Existed
    4. Also check harness for short to ground and power.

    Is the inspection result normal? 

    YES: GO TO 5.

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

  5. CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Check the continuity between manifold absolute pressure (MAP) sensor harness connector and ECM harness connector.
      Manifold absolute pressure (MAP) sensor ECM Continuity
      Connector Terminal Connector Terminal
      F65 2 F111 69 Existed
    2. Also check harness for short to ground and power.

    Is the inspection result normal? 

    YES: GO TO 6.

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

  6. CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 7.

    NO: Replace manifold absolute pressure (MAP) sensor. Refer to "EXPLODED VIEW ".

  7. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    : INSPECTION END

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