LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 2408 (Engine Control System - DTCS P0181 To P0550 (VK56DE)) >> DTC P0453: EVAP Control System Pressure Sensor >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK GROUND CONNECTIONS
    1. Turn ignition switch OFF.
    2. Loosen and retighten ground screws on the body.

    Refer to "GROUND INSPECTION ".

    Fig 1: Checking Ground Connections
    G08165101Courtesy 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 (2) harness connector.
      • Fuel filler pipe (top of frame view) (1)
      • EVAP canister vent control valve (3)
      • EVAP canister (4)
      • Drain filter (5)
      • : Vehicle front
    2. Check sensor harness connector for water.

      Water should not exist  .

    Fig 2: Identifying Fuel Filler Pipe, EVAP Control System Pressure Sensor, EVAP Canister Vent Control Valve, EVAP Canister And Drain Filter
    G08165102Courtesy 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
    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 

      OK or NG 

      OK: GO TO  5.

      NG: GO TO 4.

    Fig 3: Checking Voltage Between EVAP Control System Pressure Sensor Terminal 3 And Ground Using Tester
    G08165103Courtesy of NISSAN NORTH AMERICA, INC.
  4. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors C1, E41
    • Harness connectors E5, F14
    • 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.

  5. 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 67.

      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  7.

    NG: GO TO 6.

  6. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors C1, E41
    • Harness connectors E5, F14
    • 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.

  7. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
    1. Check harness continuity between ECM terminal 32 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  9.

    NG: GO TO 8.

  8. DETECT MALFUNCTIONING PART

    Check the following.

    • Harness connectors C1, E41
    • Harness connectors E5, F14
    • 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.

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

    OK or NG 

    OK: GO TO 10.

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

  10. CHECK EVAP CANISTER VENT CONTROL VALVE

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 11.

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

  11. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 12.

    NG: Replace EVAP control system pressure sensor.

  12. CHECK DRAIN FILTER

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO 13.

    NG: Replace drain filter. Refer to EVAPORATIVE EMISSION SYSTEM .

  13. CHECK IF EVAP CANISTER IS SATURATED WITH WATER
    1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor attached. Refer to "REMOVAL AND INSTALLATION ".
    2. Check if water will drain from the EVAP canister.

    Yes or No 

    Yes: GO TO 14.

    No: GO TO  16.

    Fig 4: Checking EVAP Canister Vent Control Valve For Water
    G08165104Courtesy of NISSAN NORTH AMERICA, INC.
  14. 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 2.0 kg (4.4 lb)  .

    OK or NG 

    OK: GO TO  16.

    NG: GO TO 15.

  15. DETECT MALFUNCTIONING PART

    Check the following.

    • EVAP canister for damage
    • EVAP hose between EVAP canister and drain filter for clogging or poor connection

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

  16. CHECK INTERMITTENT INCIDENT

    Refer to "INTERMITTENT INCIDENT ".

    >> INSPECTION END 

scientia non olet · About LEMON Manuals