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Home >> Nissan-Datsun >> 2012 >> Sentra Base, Automatic CVT Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0447 To P1148 (MR20DE) (CALIFORNIA) >> DTC P0453: EVAP Control System Pressure Sensor >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK GROUND CONNECTIONS
    1. Turn ignition switch OFF.
    2. Loosen and retighten ground screws on the body.

    Refer to "GROUND INSPECTION ".

    • ←: Vehicle front
    • Body ground (1)
    Fig 1: Identifying Body Ground
    G04925191Courtesy of NISSAN NORTH AMERICA, INC.

    OK or NG 

    OK: GO TO 2.

    NG: Repair or replace ground connections.

  2. CHECK CONNECTOR
    1. Disconnect EVAP control system pressure sensor (1) harness connector.
      • This illustration is a view from under vehicle
      • EVAP canister (2)
      • EVAP canister vent control valve (3)
    2. Check sensor harness connector for water.

    Water should not exist  .

    Fig 2: Identifying EVAP Control System Pressure Sensor, EVAP Canister And EVAP Canister Vent Control Valve
    G04925106Courtesy of NISSAN NORTH AMERICA, INC.

    OK or NG 

    OK: GO TO 3.

    NG: Repair or replace harness connector.

  3. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-I
    1. Turn ignition switch ON.
    2. Check voltage between EVAP control system pressure sensor terminal 3 and ground with CONSULT or tester.

    Voltage: Approximately 5 V 

    Fig 3: Checking EVAP Control System Pressure Sensor Power Supply Circuit-I
    G04875257Courtesy of NISSAN NORTH AMERICA, INC.

    OK or NG 

    OK: GO TO  12.

    NG: GO TO 4.

  4. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-II
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check harness continuity between EVAP control system pressure sensor terminal 3 and ECM terminal 76. Refer to Wiring Diagram .

    Continuity should exist  .

    OK or NG 

    OK: GO TO  6.

    NG: GO TO 5.

  5. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors E3, F2
    • Harness connectors B9, E13
    • Harness for open or short between EVAP control system pressure sensor and ECM

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

  6. CHECK POWER SUPPLY CIRCUITS

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

    ECM terminal Sensor terminal Reference Wiring Diagram
    69 Tumble control valve position sensor terminal 1 "WIRING DIAGRAM "
    74 Refrigerant pressure sensor terminal 3 "WIRING DIAGRAM "
    75 Crankshaft position sensor (POS) terminal 1 "WIRING DIAGRAM "
    76 EVAP control system pressure sensor terminal 3 "WIRING DIAGRAM "
    102 APP sensor terminal 5 "WIRING DIAGRAM "

    OK or NG 

    OK: GO TO 7.

    NG: Repair short to ground or short to power in harness or connectors.

  7. CHECK TUMBLE CONTROL VALVE POSITION SENSOR

    Refer to "DIAGNOSIS PROCEDURE ".

    OK or NG 

    OK: GO TO 8.

    NG: Replace intake manifold adapter. Refer to , "REMOVAL AND INSTALLATION ".

  8. CHECK REFRIGERANT PRESSURE SENSOR

    Refer to TROUBLE DIAGNOSIS .

    OK or NG 

    OK: GO TO 9.

    NG: Replace refrigerant pressure sensor. Refer to , "REMOVAL AND INSTALLATION FOR REFRIGERANT PRESSURE SENSOR ".

  9. CHECK CRANKSHAFT POSITION SENSOR (POS)

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 10.

    NG: Replace crankshaft position sensor (POS). Refer to , "COMPONENT ".

  10. CHECK APP SENSOR

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO  23.

    NG: GO TO 11.

  11. REPLACE ACCELERATOR PEDAL ASSEMBLY

    Replace accelerator pedal assembly. Refer to , "REMOVAL AND INSTALLATION ".

    INSPECTION END 

  12. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Disconnect ECM harness connector.
    3. Check harness continuity between EVAP control system pressure sensor terminal 1 and ECM terminal 51. Refer to Wiring Diagram .

      Continuity should exist  .

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

    OK or NG 

    OK: GO TO  14.

    NG: GO TO 13.

  13. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors E3, F2
    • Harness connectors B9, E13
    • Harness for open or short between EVAP control system pressure sensor and ECM

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

  14. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Check harness continuity between ECM terminal 42 and EVAP control system pressure sensor terminal 2. Refer to Wiring Diagram .

      Continuity should exist  .

    2. Also check harness for short to ground and short to power.

    OK or NG 

    OK: GO TO  16.

    NG: GO TO 15.

  15. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors E3, F2
    • Harness connectors B9, E13
    • Harness for open or short between ECM and EVAP control system pressure sensor

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

  16. CHECK RUBBER TUBE
    1. Disconnect rubber tube connected to EVAP canister vent control valve.
    2. Check the rubber tube for clogging, vent and kinked.

    OK or NG 

    OK: GO TO 17.

    NG: Clean the rubber tube using an air blower, repair or replace rubber tube.

  17. CHECK EVAP CANISTER VENT CONTROL VALVE

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 18.

    NG: Replace EVAP canister vent control valve. Refer to , "REMOVAL AND INSTALLATION ".

  18. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 19.

    NG: Replace EVAP control system pressure sensor. Refer to , "REMOVAL AND INSTALLATION ".

  19. CHECK DRAIN FILTER

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 20.

    NG: Replace drain filter. Refer to , "REMOVAL AND INSTALLATION ".

  20. CHECK IF EVAP CANISTER SATURATED WITH WATER

    Remove EVAP canister with EVAP canister vent control valve and

    EVAP control system pressure sensor attached.

    Fig 4: Checking EVAP Canister For Water
    G04886541Courtesy of NISSAN NORTH AMERICA, INC.

    Does water drain from the EVAP canister? 

    YES: GO TO 21.

    NO: GO TO  23.

  21. CHECK EVAP CANISTER

    Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor attached.

    The weight should be less than 1.9 kg (4.2 lb)  .

    OK or NG 

    OK: GO TO  23.

    NG: GO TO 22.

  22. DETECT MALFUNCTIONING PART

    Check the following.

    • EVAP canister for damage
    • EVAP hose connected to EVAP canister for clogging or poor connection

    Repair hose or replace EVAP canister. Refer to , "REMOVAL AND INSTALLATION ".

  23. CHECK INTERMITTENT INCIDENT

    Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

    INSPECTION END 

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