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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 P010A: Manifold Absolute Pressure Sensor >> Diagnosis Procedure

Diagnosis Procedure

  1. 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 2.

    NO: Repair or replace ground connection.

  2. CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR POWER SUPPLY CIRCUIT-I
    1. Disconnect manifold absolute pressure (MAP) sensor harness connector.
    2. Turn ignition switch ON.
    3. Check the voltage 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  9.

    NO: GO TO 3.

  3. CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR POWER SUPPLY CIRCUIT-II
    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 1 F111 95 Existed

    Is the inspection result normal? 

    YES: GO TO  5.

    NO: GO TO 4.

  4. DETECT MALFUNCTIONING PART

    Check the following:

    • Harness for open between battery current sensor and ECM

    : Repair open circuit.

  5. CHECK SENSOR POWER SUPPLY CIRCUIT

    Check harness for short to power and short to ground, between the following terminals:

    ECM Sensor
    Connector Terminal Name Connector Terminal
    F111 87 Crankshaft position sensor F2 1
    91 Camshaft position sensor (bank 1) F84 1
    EVT control position sensor (bank 1) F59 1
    95 Battery current sensor E21 1
    EVAP control system pressure sensor B252 3
    Manifold absolute pressure sensor F65 1
    M160 99 APP sensor 2 (Without ICC) E112 6
    APP sensor 2 (with ICC) E116 3

    Is the inspection result normal? 

    YES: GO TO 6.

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

  6. CHECK COMPONENTS

    Check the following:

    Is the inspection result normal? 

    YES: GO TO 7.

    NO: Replace malfunctioning component.

  7. CHECK APP SENSOR

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO  14.

    NO: GO TO 8.

  8. REPLACE ACCELERATOR PEDAL ASSEMBLY
    1. Replace accelerator pedal assembly.
    2. Perform "SPECIAL REPAIR REQUIREMENT ".

    : INSPECTION END

  9. 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 short to power.

    Is the inspection result normal? 

    YES: GO TO  11.

    NO: GO TO 10.

  10. DETECT MALFUNCTIONING PART

    Check the following:

    • Harness for open or short between battery current sensor and ECM

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

  11. 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 short to power.

    Is the inspection result normal? 

    YES: GO TO  13.

    NO: GO TO 12.

  12. DETECT MALFUNCTIONING PART

    Check the following:

    • Harness for open or short between manifold absolute pressure (MAP) sensor and ECM

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

  13. CHECK MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: GO TO 14.

    NO: Replace battery negative cable assembly.

  14. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    : INSPECTION END

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