LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Control System (DTC/Circuit Diagnosis) (Pr25DD) (1 Of 4)) >> DTC/Circuit Diagnosis >> P0014 EVT Control >> DTC Diagnosis Procedure >> PR25DD engine

PR25DD engine

WARNING: This page is about a different variant/trim than selected.
  1. CHECK DTC PRIORITY 

    If DTC P0014 is displayed with DTC P0078, first perform the trouble diagnosis for DTC P0078.

    Is applicable DTC detected?

    YES

    Perform diagnosis of applicable. Refer to DTC Index .

    NO

    GO TO 2.

  2. CHECK OIL PRESSURE WARNING LAMP 
    1. Start engine.
    2. Check oil pressure warning lamp and confirm it is not illuminated.
      G04073790Courtesy of NISSAN NORTH AMERICA, INC.

    Is oil pressure warning lamp illuminated?

    YES

    Check the engine oil level. Refer to ENGINE OIL : Inspection .

    NO

    GO TO 3.

  3. CHECK EXHAUST VALVE TIMING CONTROL SOLENOID VALVE 

    Check the exhaust valve timing control solenoid valve. Refer to DTC Description .

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Replace exhaust valve timing control solenoid valve. Refer to TIMING CHAIN : Exploded View .

  4. CHECK CRANKSHAFT POSITION SENSOR 

    Check the crankshaft position sensor. Refer to DTC Description .

    Is the inspection result normal?

    YES

    GO TO 5.

    NO

    Replace crankshaft position sensor. Refer to CYLINDER BLOCK : Exploded View .

  5. CHECK EXHAUST CAMSHAFT POSITION SENSOR 

    Check the exhaust camshaft position sensor. Refer to DTC Description .

    Is the inspection result normal?

    YES

    GO TO 6.

    NO

    Replace exhaust camshaft position sensor. Refer to CAMSHAFT : Exploded View .

  6. CHECK CAMSHAFT (EXH) 

    Check the following.

    • Accumulation of debris to the signal plate of camshaft rear end
      GNSJSBIB1246Z-246Courtesy of NISSAN NORTH AMERICA, INC.
    • Chipping signal plate of camshaft rear end

    Is the inspection result normal?

    YES

    GO TO 7.

    NO

    Remove debris and clean the signal plate of camshaft rear end or replace camshaft. Refer to CAMSHAFT : Removal & Installation .

  7. CHECK TIMING CHAIN INSTALLATION 

    Check service records for any recent repairs that may cause timing chain misaligned.

    Are there any service records that may cause timing chain misaligned?

    YES

    Check timing chain installation. Refer to TIMING CHAIN : Removal & Installation .

    NO

    GO TO 8.

  8. CHECK LUBRICATION CIRCUIT 

    Refer to ENGINE OIL : Inspection .

    Is the inspection result normal?

    YES

    Check intermittent incident. Refer to Inspection .

    NO

    Clean lubrication line.