FixVault
Home › Infiniti › 2021 › Q60 Pure, AWD › Repair and Diagnosis › Engine Performance › System › Engine Control System (DTCS) (4 Of 7) › Engine (ECM) › DTC P119A: Fuel Rail Pressure Sensor › Confirmation Procedure

Confirmation Procedure

  1. PRECONDITIONING-I 

    If DTC Confirmation Procedure is previously conducted, always perform the following procedure before conducting the next test.

    1. Turn ignition switch OFF and wait at least 10 seconds.
    2. Turn ignition switch ON.
    3. Turn ignition switch OFF and wait at least 10 seconds.

    TESTING CONDITION:

    Before performing the following procedure, check that battery voltage is 9 V or more with ignition switch ON.

    GO TO 2.

  2. PRECONDITIONING-II 
    NOTE:
    • When it is certain that the previous driving is performed with the engine warmed up, the next steps can be performed.
    • When it is difficult to satisfy the conditions, performing Component Function Check can identify the presence or absence of malfunction in the part/system that may result in a possible cause of this DTC. (Perform DTC Confirmation Procedure as much as possible.)
    1. Start the engine and warm it up until engine coolant temperature reaches 70 deg.C (158 deg.F) or more.
    2. Stop the engine and leave the vehicle in a cool place (soak the engine) until the engine coolant temperature reaches 35 deg.C (95 deg.F) or less.
    CAUTION:
    • The difference between air temperature and engine coolant temperature must be 5 deg.C (9 deg.F) or less.
    • Never turn ignition switch ON during soak the engine.

    Are the conditions satisfied?

    YES

    GO TO 4.

    NO

    GO TO 3.

  3. COMPONENT FUNCTION CHECK 

    SYMBOL With CONSULT

    1. Turn ignition switch OFF.
    2. Start the engine.
    3. On CONSULT screen, select "ENGINE">>"Data Monitor".
    4. Check the value of "FUEL PRES SEN V" under the following conditions.

      Monitor Item

      Condition

      Values/Status

      FUEL PRES SEN V

      Engine speed: Idle

      0.730 - 1.000 V

      Engine speed: Revving engine from idle to 4, 000 rpm quickly

      1.000 - 2.900 V

    SYMBOL Without CONSULT

    1. Turn ignition switch OFF.
    2. Start the engine.
    3. Check fuel rail pressure sensor signal voltage.

    ECM

    Condition

    Value

    Connector

    +

    -

    Terminal

    F143

    47

    85

    Engine speed: Idle

    0.73 - 1.0 V

    Engine speed: Revving engine from idle to 4, 000 rpm quickly

    1.0 - 2.9 V

    Is the inspection result normal?

    YES

    To check malfunction symptom before repair: Refer to Inspection .

    YES

    Confirmation after repair: INSPECTION END

    NO

    Refer to DTC Diagnosis Procedure .

  4. PERFORM DTC CONFIRMATION PROCEDURE-I 

    SYMBOL With CONSULT

    1. Turn ignition switch ON (engine stopped).
    2. On CONSULT screen, select "ENGINE">>"Data Monitor">>"COOLAN TEMP/S" and "INT/A TEMP SE".
    3. Check that the indicated value of "COOLAN TEMP/S" is less than 35 deg.C (95 deg.F).
    4. Check that the difference between "INT/A TEMP SE" and "COOLAN TEMP/S" is 5 deg.C (41 deg.F) or less.
    5. Check "Self-diagnostic result" of "ENGINE".

    Is DTC P119A detected?

    YES

    Refer to DTC Diagnosis Procedure .

    NO

    Conditions satisfied: GO TO 5.

    NO

    Conditions not satisfied: GO TO 2.

  5. PERFORM DTC CONFIRMATION PROCEDURE-II 
    1. Start the engine (or cranking) at least 1 second.
    2. Check "Self-diagnostic result" of "ENGINE".

    Is DTC P119A detected?

    YES

    Refer to DTC Diagnosis Procedure .

    NO

    To check malfunction symptom before repair: Refer to Inspection .

    NO

    Confirmation after repair: INSPECTION END

About FixVault