LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Control System (DTC/Circuit Diagnosis) (Pr25DD) (3 Of 4)) >> DTC/Circuit Diagnosis >> P119A Fuel Rail Pressure Sensor >> DTC Diagnosis Procedure >> PR25DD engine

PR25DD engine

WARNING: This page is about a different variant/trim than selected.
NOTE: Turning the ignition switch ON with FRP sensor harness connector disconnected causes ECM to detect DTC P0190. Be sure to erase the DTC when the diagnosis procedure.
  1. CHECK FUEL RAIL PRESSURE (FRP) SENSOR POWER SUPPLY-1 
    1. Turn ignition switch OFF.
    2. Disconnect FRP sensor connector.
    3. Turn ignition switch ON.
    4. Check the voltage between FRP sensor harness connector terminals.

      FRP sensor

      Voltage

      (Approx.)

      Connector

      +

      -

      terminal

      F116

      3

      1

      5 V

    Inspection result normal?

    YES

    GO TO 7.

    NO

    GO TO 2.

  2. CHECK FRP SENSOR POWER SUPPLY-2 

    Check the voltage between FRP sensor harness connector and the ground.

    +

    -

    Voltage

    (Approx.)

    FRP sensor

    Connector

    Terminal

    F116

    3

    Ground

    5 V

    Is inspection result normal?

    YES

    GO TO 5.

    NO

    GO TO 3.

  3. CHECK FRP SENSOR POWER SUPPLY CIRCUIT FOR OPEN AND SHORT 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between FRP sensor harness connector and ECM harness connector.

      FRP sensor

      ECM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      F116

      3

      F91

      43

      Existed
    4. Also check harness for short to power.

    Is inspection result normal?

    YES

    GO TO 4.

    NO

    Repair or replace error-detected parts.

  4. CHECK SENSOR POWER SUPPLY 2 CIRCUIT 

    Refer to Diagnosis Procedure .

    Is inspection result normal?

    YES

    Perform the trouble diagnosis for ECM power supply circuit. Refer to Diagnosis Procedure .

    NO

    Repair or replace error-detected parts.

  5. CHECK FRP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between FRP sensor harness connector and ECM harness connector.

      FRP sensor

      ECM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      F116

      1

      F91

      45

      Existed
    4. Also check harness for short to power.

    Is inspection result normal?

    YES

    GO TO 6.

    NO

    Repair or replace error-detected parts.

  6. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT 
    1. Check the continuity between ECM harness connector and ground.

      ECM

      Ground

      Continuity

      Connector

      Terminal

      F91

      5

      Ground

      Existed

      65

      F90

      69

      70

      E31

      157

      159

      162
    2. Also check harness for short to power.

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Repair or replace error-detected parts.

  7. CHECK FRP SENSOR SIGNAL CIRCUIT FOR OPEN AND SHORT 
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check the continuity between FRP sensor harness connector and ECM harness connector.

      FRP sensor

      ECM

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      F116

      2

      F91

      44

      Existed
    4. Also check harness for short to ground and to power.

    Is inspection result normal?

    YES

    GO TO 8.

    NO

    Repair or replace error-detected parts.

  8. CHECK FRP SENSOR 

    Check the FRP sensor. Refer to Component Inspection .

    Is inspection result normal?

    YES

    INSPECTION END

    NO

    Repair or replace error-detected parts.

scientia non olet · About LEMON Manuals