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Engine Controls - Trouble Shooting - No Codes - 4 Cyl & V6: Other Nissan Frontier D22

Testing & Diagnostics ~1502 words

HARD START OR NO START (CRANKS NORMALLY)

Note. Unless otherwise indicated, see appropriate SYSTEM & COMPONENT TESTING article for testing procedures.

  1. Check fuel pump circuit.
  2. Check fuel injector circuits.
  3. Check battery and charging system. See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.
  4. Check Idle Air Control Valve-Auxiliary Air Control (IACV-AAC) valve circuit.
  5. Check Idle Air Control Valve-Fast Idle Control Device (IACV-FICD) (where equipped).
  6. Check ignition circuit.
  7. Check Mass Airflow (MAF) sensor circuit.
  8. Check Engine Coolant Temperature (ECT) sensor circuit.
  9. Check Camshaft Position (CMP) sensor circuit.
  10. Check Exhaust Gas Recirculation (EGR) system.
  11. Check ECM power supply and ground circuits.
  12. Check fuel pressure regulator.
  13. Check start signal circuit.
  14. Check EVAP system.
  15. Check PCV system.
  16. Check ignition timing and idle speed adjustment. See «ON-VEHICLE ADJUSTMENTS»(ref-135501) article.
  17. Check fuel delivery system. See «FUEL SYSTEM»(ref-135504-S17351378512002022200000) in BASIC DIAGNOSTIC PROCEDURES article.
  18. Visually inspect air intake system for leaks or restrictions.

ENGINE STALLS

Note. Unless otherwise indicated, see appropriate SYSTEM & COMPONENT TESTING article for testing procedures.

  1. Check fuel pump circuit.
  2. Check fuel injector circuits.
  3. Check battery and charging system. See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.
  4. Check Idle Air Control Valve-Auxiliary Air Control (IACV-AAC) valve circuit.
  5. Check Idle Air Control Valve-Fast Idle Control Device (IACV-FICD) (where equipped).
  6. Check ignition circuit.
  7. Check Exhaust Gas Recirculation (EGR) system.
  8. Check Mass Airflow (MAF) sensor circuit.
  9. Check front Heated Oxygen Sensor (HO2S) circuit.
  10. Check Engine Coolant Temperature (ECT) sensor circuit.
  11. Check Throttle Position (TP) sensor circuit.
  12. Check Camshaft Position (CMP) sensor circuit.
  13. Check Vehicle Speed Sensor (VSS) circuit.
  14. Check ECM power supply and ground circuits.
  15. Check power steering pressure switch circuit.
  16. Check Throttle Position (TP) sensor adjustment. See «THROTTLE POSITION SWITCH, IGNITION TIMING & IDLE SPEED»(ref-135501-S10594987612002022200000) in ON-VEHICLE ADJUSTMENTS article.
  17. Check fuel pressure regulator. See «FUEL SYSTEM»(ref-135504-S17351378512002022200000) in BASIC DIAGNOSTIC PROCEDURES article.
  18. Check EVAP system.
  19. Check PCV system.
  20. Check ignition timing and idle speed adjustment. See «THROTTLE POSITION SWITCH, IGNITION TIMING & IDLE SPEED»(ref-135501-S10594987612002022200000) in ON-VEHICLE ADJUSTMENTS article.
  21. Check Idle Air Control Valve-Fast Idle Control Device (IACV-FICD) (where equipped).
  22. Check fuel delivery system.
  23. Visually inspect air intake system for leaks or restrictions.

HESITATION OR SURGE

Note. Unless otherwise indicated, see appropriate SYSTEM & COMPONENT TESTING article for testing procedures.

  1. Check ignition timing adjustment. See «THROTTLE POSITION SWITCH, IGNITION TIMING & IDLE SPEED»(ref-135501-S10594987612002022200000) in ON-VEHICLE ADJUSTMENTS article.
  2. Check Throttle Position (TP) sensor adjustment. See «THROTTLE POSITION SWITCH, IGNITION TIMING & IDLE SPEED»(ref-135501-S10594987612002022200000) in ON-VEHICLE ADJUSTMENTS article.
  3. Check battery and charging system. See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.
  4. Check fuel pump circuit.
  5. Check fuel injector circuits.
  6. Check Idle Air Control Valve-Auxiliary Air Control (IACV-AAC) valve circuit.
  7. Check Idle Air Control Valve-Fast Idle Control Device (IACV-FICD) (where equipped).
  8. Check ignition circuit.
  9. Check Exhaust Gas Recirculation (EGR) system.
  10. Check Camshaft Position (CMP) sensor circuit.
  11. Check Mass Airflow (MAF) sensor circuit.
  12. Check front Heated Oxygen Sensor (HO2S) circuit.
  13. Check Engine Coolant Temperature (ECT) sensor circuit.
  14. Check Throttle Position (TP) sensor circuit.
  15. Check ECM power supply and ground circuits.
  16. Check Park/Neutral Position (PNP) switch circuit.
  17. Check fuel pressure regulator. See «FUEL SYSTEM»(ref-135504-S17351378512002022200000) in BASIC DIAGNOSTIC PROCEDURES article.
  18. Check EVAP system.
  19. Check PCV system.

SPARK KNOCK/DETONATION

Note. Unless otherwise indicated, see appropriate SYSTEM & COMPONENT TESTING article for testing procedures.

  1. Check ignition timing adjustment. See «THROTTLE POSITION SWITCH, IGNITION TIMING & IDLE SPEED»(ref-135501-S10594987612002022200000) in ON-VEHICLE ADJUSTMENTS article.
  2. Check fuel injector circuits.
  3. Check ignition circuit.
  4. Check fuel pump circuit.
  5. Check Exhaust Gas Recirculation (EGR) system.
  6. Check cooling system operation.
  7. Check PCV system.
  8. Check fuel pressure regulator. See «FUEL SYSTEM»(ref-135504-S17351378512002022200000) in BASIC DIAGNOSTIC PROCEDURES article.
  9. Check ignition circuit.
  10. Check Camshaft Position (CMP) sensor circuit.
  11. Check Mass Airflow (MAF) sensor circuit.
  12. Check front Heated Oxygen Sensor (HO2S) circuit.
  13. Check ECM power supply and ground circuits.
  14. Check Engine Coolant Temperature (ECT) sensor circuit.
  15. Check knock sensor circuit.
  16. Check Vehicle Speed Sensor (VSS) circuit.
  17. Check fuel delivery system.
  18. Check for vacuum leaks.
  19. Check engine mechanical condition.
  20. Check EVAP system.

LACK OF POWER/POOR ACCELERATION

Note. Unless otherwise indicated, see appropriate SYSTEM & COMPONENT TESTING article for testing procedures.

  1. Check ignition timing and Throttle Position (TP) sensor adjustment. See «THROTTLE POSITION SWITCH, IGNITION TIMING & IDLE SPEED»(ref-135501-S10594987612002022200000) in ON-VEHICLE ADJUSTMENTS article.
  2. Check Throttle Position (TP) sensor circuit.
  3. Check battery and charging system. See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.
  4. Check ignition circuits.
  5. Check fuel pump circuit.
  6. Check fuel injector circuits.
  7. Check fuel pressure regulator. See «FUEL SYSTEM»(ref-135504-S17351378512002022200000) in BASIC DIAGNOSTIC PROCEDURES article.
  8. Check Exhaust Gas Recirculation (EGR) system.
  9. Check PCV system.
  10. Check Camshaft Position (CMP) sensor circuit.
  11. Check Mass Airflow (MAF) sensor circuit.
  12. Check front Heated Oxygen Sensor (HO2S) circuit.
  13. Check Engine Coolant Temperature (ECT) sensor circuit.
  14. Check Park/Neutral Position (PNP) switch circuit.
  15. Check knock sensor circuit.
  16. Check Vehicle Speed Sensor (VSS) circuit.
  17. Check ECM power supply and ground circuits.
  18. Check fuel delivery system.
  19. Check engine mechanical condition.
  20. Check Idle Air Control Valve-Auxiliary Air Control (IACV-AAC) valve circuit.
  21. Check EVAP system.

HIGH OR LOW IDLE

Note. Unless otherwise indicated, see appropriate SYSTEM & COMPONENT TESTING article for testing procedures.

  1. Check idle speed and throttle position sensor adjustment. See «THROTTLE POSITION SWITCH, IGNITION TIMING & IDLE SPEED»(ref-135501-S10594987612002022200000) in ON-VEHICLE ADJUSTMENTS article.
  2. Check Idle Air Control Valve-Auxiliary Air Control (IACV-AAC) valve circuit.
  3. Check fuel injector circuits.
  4. Check Idle Air Control Valve-Fast Idle Control Device (IACV-FICD) (where equipped).
  5. Check Exhaust Gas Recirculation (EGR) system.
  6. Check PCV system.
  7. Check fuel pressure regulator. See «FUEL SYSTEM»(ref-135504-S17351378512002022200000) in BASIC DIAGNOSTIC PROCEDURES article.
  8. Check EVAP system.
  9. Check Engine Coolant Temperature (ECT) sensor circuit.
  10. Check Throttle Position (TP) sensor circuit.
  11. Check Camshaft Position (CMP) sensor circuit.
  12. Check Mass Airflow (MAF) sensor circuit.
  13. Check knock sensor circuit.
  14. Check for vacuum leaks.
  15. Check throttle body and throttle cable.
  16. Ensure cooling system is reaching normal operating temperature.

ROUGH IDLE

Note. Unless otherwise indicated, see appropriate SYSTEM & COMPONENT TESTING article for testing procedures.

  1. Check ignition timing, idle speed and throttle position sensor adjustment. See «THROTTLE POSITION SWITCH, IGNITION TIMING & IDLE SPEED»(ref-135501-S10594987612002022200000) in ON-VEHICLE ADJUSTMENTS article.
  2. Check battery and charging system. See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.
  3. Check Idle Air Control Valve-Auxiliary Air Control (IACV-AAC) valve circuit.
  4. Check fuel injector circuits.
  5. Check fuel pump circuit.
  6. Check Idle Air Control Valve-Fast Idle Control Device (IACV-FICD) (where equipped).
  7. Check ignition circuits.
  8. Check PCV system.
  9. Check EVAP system.
  10. Check Exhaust Gas Recirculation (EGR) system.
  11. Check ECM power supply and ground circuits.
  12. Check Camshaft Position (CMP) sensor circuit.
  13. Check Mass Airflow (MAF) sensor circuit.
  14. Check front Heated Oxygen Sensor (HO2S) circuit.
  15. Check Engine Coolant Temperature (ECT) sensor circuit.
  16. Check Throttle Position (TP) sensor circuit.
  17. Check power steering pressure switch circuit.
  18. Check electrical load signal circuit.
  19. Check Park/Neutral Position (PNP) switch circuit.
  20. Check fuel delivery system.
  21. Check air intake system.
  22. Check engine mechanical condition.

SLOW RETURN TO IDLE OR NO RETURN TO IDLE

Note. Unless otherwise indicated, see appropriate SYSTEM & COMPONENT TESTING article for testing procedures.

  1. Check idle speed and throttle position sensor adjustment. See «THROTTLE POSITION SWITCH, IGNITION TIMING & IDLE SPEED»(ref-135501-S10594987612002022200000) in ON-VEHICLE ADJUSTMENTS article.
  2. Check Idle Air Control Valve-Auxiliary Air Control (IACV-AAC) valve circuit.
  3. Check Idle Air Control Valve-Fast Idle Control Device (IACV-FICD), if equipped.
  4. Check Exhaust Gas Recirculation (EGR) system.
  5. Check fuel pressure regulator. See «FUEL SYSTEM»(ref-135504-S17351378512002022200000) in BASIC DIAGNOSTIC PROCEDURES article.
  6. Check EVAP system.
  7. Check PCV system.
  8. Check A/C system.
  9. Ensure cooling system is reaching normal operating temperature.
  10. Check Engine Coolant Temperature (ECT) sensor circuit.
  11. Check Throttle Position (TP) sensor circuit.
  12. Check throttle cable and throttle body.

EXCESSIVE FUEL CONSUMPTION

Note. Unless otherwise indicated, see appropriate SYSTEM & COMPONENT TESTING article for testing procedures.

  1. Check ignition timing, idle speed and throttle position sensor adjustment. See «THROTTLE POSITION SWITCH, IGNITION TIMING & IDLE SPEED»(ref-135501-S10594987612002022200000) in ON-VEHICLE ADJUSTMENTS article.
  2. Check battery and charging system. See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.
  3. Check fuel injector circuits.
  4. Check Idle Air Control Valve-Auxiliary Air Control (IACV-AAC) valve circuit.
  5. Check ignition circuits.
  6. Ensure cooling system is reaching normal operating temperature.
  7. Check fuel pump circuit.
  8. Check Exhaust Gas Recirculation (EGR) system.
  9. Check fuel pressure regulator. See «FUEL SYSTEM»(ref-135504-S17351378512002022200000) in BASIC DIAGNOSTIC PROCEDURES article.
  10. Check EVAP system.
  11. Check PCV system.
  12. Check Camshaft Position (CMP) sensor circuit.
  13. Check Mass Airflow (MAF) sensor circuit.
  14. Check Engine Coolant Temperature (ECT) sensor.
  15. Check front Heated Oxygen Sensor (HO2S).
  16. Check Throttle Position (TP) sensor circuit.
  17. Check knock sensor circuit.
  18. Check Vehicle Speed Sensor (VSS) circuit.
  19. Check ECM power supply and ground circuits.
  20. Check A/C system.
  21. Check Park/Neutral Position (PNP) switch circuit.
  22. Check engine mechanical condition.

EXCESSIVE OIL CONSUMPTION

Note. Unless otherwise indicated, see appropriate SYSTEM & COMPONENT TESTING article for testing procedures.

  1. Check PCV system.
  2. Check engine mechanical condition.

Intermittent Simulation

To reproduce conditions creating an intermittent fault, use following methods

  1. Gently vibrate component.
  2. Heat component.
  3. Freeze component.
  4. Wiggle or bend wiring harness.
  5. Spray component with water.
  6. Turn on all electrical accessories.

Monitor circuit/component voltage or resistance while simulating intermittent. If engine is running, monitor for Diagnostic Trouble Codes (DTCs.) Use test results to identify a faulty component or circuit.

More articles — Engine Controls - Trouble Shooting - No Codes - 4 Cyl & V6