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Engine Controls - Tests W/o Codes: Other Honda Civic GA

Testing & Diagnostics ~2230 words

ENGINE WILL NOT START

Note. If engine will not start, MIL always or never illuminates, and no Diagnostic Trouble Codes (DTC) are set, check MIL circuit. See MALFUNCTION INDICATOR LIGHT (MIL) MALFUNCTION in appropriate SELF-DIAGNOSTICS article. If engine will not start and immobilizer indicator light is illuminated, check immobilizer system. See appropriate IMMOBILIZER SYSTEMS article in ACCESSORIES & EQUIPMENT. If engine will not start, Malfunction Indicator Light (MIL) works properly, and no Diagnostic Trouble Codes (DTCs) are set, check following components

Accord 2.3L

  1. Check battery. See appropriate STARTERS article in STARTING & CHARGING SYSTEMS.
  2. Check starting system. See appropriate STARTERS article in STARTING & CHARGING SYSTEMS.
  3. Check fuel pump. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  4. Check ignition wires, ignition coil and Ignition Control Module (ICM). See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  5. Check PGM-FI main relay. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  6. Check for low engine compression.
  7. Check for intake system air leaks.
  8. Check for a seized engine.
  9. Check for a slipped/broken timing belt.
  10. Check for contaminated fuel.

Accord 3.0L, Odyssey & S2000

  1. Check battery. See appropriate STARTERS article in STARTING & CHARGING SYSTEMS.
  2. Check starting system. See appropriate STARTERS article in STARTING & CHARGING SYSTEMS.
  3. Check fuel pump. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  4. Check ignition coils. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  5. Check PGM-FI main relay. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  6. Check for low engine compression.
  7. Check for intake system air leaks.
  8. Check for a seized engine.
  9. Check for a slipped/broken timing belt.
  10. Check for contaminated fuel.

Civic & CR-V

  1. Check ignition wires, ignition coil and Ignition Control Module (ICM). See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  2. Check fuel pressure. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  3. Check PGM-FI main relay. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  4. Check Crankshaft Position (CKP), Top Dead Center (TDC), Cylinder Position (CYP) and/or Crankshaft Speed Fluctuation (CKF) sensors. See appropriate Diagnostic Trouble Code (DTC) in «SELF-DIAGNOSTICS - CIVIC»(ref-2658) article.
  5. Check for contaminated fuel.
  6. Check A/T gear position signal (A/T) or clutch switch signal (M/T). See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  7. Check for a malfunctioning PCM.
  8. Check for low engine compression.
  9. Check for intake system air leaks.
  10. Check for a seized engine.
  11. Check for a slipped/broken timing belt.
  12. Check starting system. See appropriate STARTERS article in STARTING & CHARGING SYSTEMS.
  13. Check for an overheated engine.
  14. Check battery. See appropriate STARTERS article in STARTING & CHARGING SYSTEMS.

Prelude

  1. Check for intake system air leaks.
  2. Check for a seized engine.
  3. Check for a slipped/broken timing belt.
  4. Check starting system. See appropriate STARTERS article in STARTING & CHARGING SYSTEMS.
  5. Check for an overheated engine.
  6. Check battery. See appropriate STARTERS article in STARTING & CHARGING SYSTEMS.
  7. Check ignition wires, ignition coil and Ignition Control Module (ICM). See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  8. Check fuel pressure. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  9. Check PGM-FI main relay. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  10. Check Crankshaft Position (CKP), Top Dead Center (TDC), Cylinder Position (CYP) and/or Crankshaft Speed Fluctuation (CKF) sensors. See appropriate Diagnostic Trouble Code (DTC) in «SELF-DIAGNOSTICS - PRELUDE»(ref-2660) article.
  11. Check for contaminated fuel.
  12. Check A/T gear position signal (A/T) or clutch switch signal (M/T). See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  13. Check for a malfunctioning PCM.
  1. Check battery. See appropriate STARTERS article in STARTING & CHARGING SYSTEMS.
  2. Check fuel pressure. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  3. Check ignition wires, ignition coil and Ignition Control Module (ICM). See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  4. Check for low engine compression.
  5. Check for intake system air leaks.
  6. Check for contaminated fuel.
  1. Check battery. See appropriate STARTERS article in STARTING & CHARGING SYSTEMS.
  2. Check fuel pressure. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  3. Check ignition coils. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  4. Check for low engine compression.
  5. Check for intake system air leaks.
  6. Check for contaminated fuel.
  1. Check fuel pressure. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  2. Check ignition wires, ignition coil and Ignition Control Module (ICM). See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  3. Check Manifold Absolute Pressure (MAP) sensor. See appropriate Diagnostic Trouble Code (DTC) in appropriate SELF-DIAGNOSTICS article.
  4. Check air cleaner element.
  5. Check Barometric Pressure (BARO) sensor. See appropriate Diagnostic Trouble Code (DTC) in appropriate SELF-DIAGNOSTICS article.
  6. Check Evaporative Emission (EVAP) control system. See appropriate Diagnostic Trouble Code (DTC) in appropriate SELF-DIAGNOSTICS article or «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  1. Check fuel pressure. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  2. Check ignition wires, ignition coil and Ignition Control Module (ICM). See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  3. Check Manifold Absolute Pressure (MAP) sensor. See appropriate Diagnostic Trouble Code (DTC) in «SELF-DIAGNOSTICS - PRELUDE»(ref-2660) article.
  4. Check air cleaner element.
  5. Check Barometric Pressure (BARO) sensor. See appropriate Diagnostic Trouble Code (DTC) in «SELF-DIAGNOSTICS - PRELUDE»(ref-2660) article.
  6. Check Evaporative Emission (EVAP) control system. See appropriate Diagnostic Trouble Code (DTC) in «SELF-DIAGNOSTICS - PRELUDE»(ref-2660) article or «SYSTEM & COMPONENT TESTING»(ref-3110) article.

Accord, Odyssey & S2000

Check idle speed adjustment. See ON-VEHICLE ADJUSTMENTS article.

Civic

  1. Check Idle Air Control Valve (IAC). See appropriate Diagnostic Trouble Code (DTC) in appropriate SELF-DIAGNOSTICS article.
  2. Check idle speed adjustment. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  3. Check Intake Air Temperature (IAT) sensor circuit. See appropriate Diagnostic Trouble Code (DTC) in appropriate SELF-DIAGNOSTICS article.
  4. Check air cleaner element.

CR-V

  1. Check Idle Air Control Valve (IAC). See appropriate Diagnostic Trouble Code (DTC) in appropriate SELF-DIAGNOSTICS article.
  2. Check fast idle thermo valve for proper operation. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  3. Check idle speed adjustment. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  4. Check Intake Air Temperature (IAT) sensor circuit. See appropriate Diagnostic Trouble Code (DTC) in appropriate SELF-DIAGNOSTICS article.
  5. Check air cleaner element.
  1. Check Idle Air Control Valve (IAC). See appropriate Diagnostic Trouble Code (DTC) in appropriate SELF-DIAGNOSTICS article.
  2. Check Fast Idle Thermo Valve for proper operation. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  3. Check idle speed adjustment. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  4. Check Intake Air Temperature (IAT) sensor circuit. See appropriate Diagnostic Trouble Code (DTC) in «SELF-DIAGNOSTICS - PRELUDE»(ref-2660) article.
  5. Check air cleaner element.
  1. Check idle speed adjustment. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  2. Inspect/adjust throttle cable. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  3. Inspect throttle body for sticking and binding.
  4. Check for worn throttle body.
  1. Check Idle Air Control Valve (IAC). See appropriate Diagnostic Trouble Code (DTC) in «SELF-DIAGNOSTICS - CIVIC»(ref-2658) article.
  2. Check idle speed adjustment. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  3. Inspect/adjust throttle cable. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  4. Inspect throttle body for sticking and binding.
  5. Check for worn throttle body.
  1. Check Idle Air Control Valve (IAC). See appropriate Diagnostic Trouble Code (DTC) in SELF-DIAGNOSTICS - CR-V article.
  2. Check Fast Idle Thermo Valve for proper operation. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  3. Check idle speed adjustment. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  4. Inspect/adjust throttle cable. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  5. Inspect throttle body for sticking and binding.
  6. Check for worn throttle body.
  1. Check Idle Air Control Valve (IAC). See appropriate Diagnostic Trouble Code (DTC) in «SELF-DIAGNOSTICS - PRELUDE»(ref-2660) article.
  2. Check Fast Idle Thermo Valve for proper operation. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  3. Check idle speed adjustment. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  4. Inspect/adjust throttle cable. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  5. Inspect throttle body for sticking and binding.
  6. Check for worn throttle body.
  1. Check idle speed adjustment. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  2. Inspect/adjust throttle cable. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  3. Inspect throttle body for sticking and binding.
  4. Check for worn throttle body.
  5. Check for intake system air leaks.
  1. Check Idle Air Control Valve (IAC). See appropriate Diagnostic Trouble Code (DTC) in «SELF-DIAGNOSTICS - CIVIC»(ref-2658) article.
  2. Check idle speed adjustment. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  3. Inspect/adjust throttle cable. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  4. Inspect throttle body for sticking and binding.
  5. Check for worn throttle body.
  1. Check idle speed adjustment. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  2. Check Idle Air Control Valve (IAC). See appropriate Diagnostic Trouble Code (DTC) in appropriate SELF-DIAGNOSTICS article.
  3. Check Fast Idle Thermo Valve for proper operation. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  4. Inspect/adjust throttle cable. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  5. Inspect throttle body for sticking and binding.
  6. Check for worn throttle body.
  1. Check idle speed adjustment. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  2. Check Idle Air Control Valve (IAC). See appropriate Diagnostic Trouble Code (DTC) in «SELF-DIAGNOSTICS - PRELUDE»(ref-2660) article.
  3. Check Fast Idle Thermo Valve for proper operation. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  4. Inspect/adjust throttle cable. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  5. Inspect throttle body for sticking and binding.
  6. Check for worn throttle body.
  7. Check for intake system air leaks.

MISFIRE

Check for at misfiring cylinder. See appropriate Diagnostic Trouble Code (DTC) in appropriate SELF-DIAGNOSTICS article.

  1. Check fuel pressure. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  2. Inspect throttle body for sticking and binding.
  3. Check for worn throttle body.
  4. Inspect/adjust throttle cable. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  5. Check for low engine compression.
  1. Check fuel pressure. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  2. Inspect throttle body for sticking and binding.
  3. Check for worn throttle body.
  4. Inspect/adjust throttle cable. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  5. Check Throttle Position (TP) sensor circuit. See appropriate Diagnostic Trouble Code (DTC) in appropriate SELF-DIAGNOSTICS article.
  6. Check intake air pipe for restrictions.
  7. Check air cleaner element.
  8. Check Three Way Catalytic Converter (TWC) for restrictions.
  9. Check for contaminated fuel.
  1. Check fuel pressure. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  2. Inspect throttle body for sticking and binding.
  3. Check for worn throttle body.
  4. Inspect/adjust throttle cable. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  5. Check Throttle Position (TP) sensor circuit. See appropriate Diagnostic Trouble Code (DTC) in appropriate SELF-DIAGNOSTICS article.
  6. Check air cleaner element.
  7. Check Three Way Catalytic Converter (TWC) for restrictions.
  8. Check for contaminated fuel.
  1. Check fuel pressure. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  2. Inspect throttle body for sticking and binding.
  3. Check for worn throttle body.
  4. Inspect/adjust throttle cable. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  5. Check Throttle Position (TP) sensor circuit. See appropriate Diagnostic Trouble Code (DTC) in «SELF-DIAGNOSTICS - PRELUDE»(ref-2660) article.
  6. Check intake air pipe for restrictions.
  7. Check air cleaner element.
  8. Check Three Way Catalytic Converter (TWC) for restrictions.
  9. Check for contaminated fuel.
  1. Check fuel pressure. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  2. Check ignition wires. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  3. Check/adjust idle speed. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  4. Trouble shoot brake switch signal circuit. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  5. Check for intake system air leaks.
  6. Check for faulty harness and sensor connectors.

Accord 3.0L & Odyssey

  1. Check fuel pressure. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  2. Check/adjust idle speed. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  3. Trouble shoot brake switch signal circuit. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  4. Check ignition coils. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  5. Check for intake system air leaks.
  6. Check for faulty harness and sensor connectors.
  1. Check fuel pressure. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  2. Check ignition wires, ignition coil and Ignition Control Module (ICM). See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  3. Check Manifold Absolute Pressure (MAP) sensor. See appropriate Diagnostic Trouble Code (DTC) in «SELF-DIAGNOSTICS - CIVIC»(ref-2658) article.
  4. Check Idle Air Control Valve (IAC). See appropriate Diagnostic Trouble Code (DTC) in «SELF-DIAGNOSTICS - CIVIC»(ref-2658) article.
  5. Check for contaminated fuel.
  6. Check idle speed adjustment.
  7. Check Crankshaft Position (CKP), Top Dead Center (TDC), Cylinder Position (CYP) and/or Crankshaft Speed Fluctuation (CKF) sensors. See appropriate Diagnostic Trouble Code (DTC) in «SELF-DIAGNOSTICS - CIVIC»(ref-2658) article.
  8. Check brake switch signal. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  1. Check fuel pressure. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  2. Check ignition wires, ignition coil and Ignition Control Module (ICM). See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  3. Check Manifold Absolute Pressure (MAP) sensor. See appropriate Diagnostic Trouble Code (DTC) in SELF-DIAGNOSTICS article.
  4. Check Idle Air Control Valve (IAC). See appropriate Diagnostic Trouble Code (DTC) in SELF-DIAGNOSTICS article.
  5. Check for contaminated fuel.
  6. Check/adjust idle speed. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  7. Check Crankshaft Position (CKP), Top Dead Center (TDC), Cylinder Position (CYP) and/or Crankshaft Speed Fluctuation (CKF) sensors. See appropriate Diagnostic Trouble Code (DTC) in SELF-DIAGNOSTICS article.
  8. Check brake switch signal. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  1. Check fuel pressure. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  2. Check ignition wires, ignition coil and Ignition Control Module (ICM). See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  3. Check Manifold Absolute Pressure (MAP) sensor. See appropriate Diagnostic Trouble Code (DTC) in «SELF-DIAGNOSTICS - PRELUDE»(ref-2660) article.
  4. Check Idle Air Control Valve (IAC). See appropriate Diagnostic Trouble Code (DTC) in «SELF-DIAGNOSTICS - PRELUDE»(ref-2660) article.
  5. Check for contaminated fuel.
  6. Check/adjust idle speed. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  7. Check Crankshaft Position (CKP), Top Dead Center (TDC), Cylinder Position (CYP) and/or Crankshaft Speed Fluctuation (CKF) sensors. See appropriate Diagnostic Trouble Code (DTC) in «SELF-DIAGNOSTICS - PRELUDE»(ref-2660) article.
  8. Check brake switch signal. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.

S2000

  1. Check fuel pressure. See «BASIC DIAGNOSTIC PROCEDURES»(ref-3102) article.
  2. Check/adjust idle speed. See «ON-VEHICLE ADJUSTMENTS»(ref-3100) article.
  3. Trouble shoot brake switch signal circuit. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  4. Check for intake system air leaks.
  5. Check for faulty harness and sensor connectors.

Accord & S2000

  1. Test ORVR vent shut valve. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  2. Inspect ORVR signal tube between fuel pipe and ORVR vent shut valve. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  3. Inspect ORVR vapor vent tube between EVAP control canister and ORVR vent shut valve. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  4. Check EVAP control canister.

Civic & Prelude

  1. Check Evaporative Emission (EVAP) control system. See appropriate Diagnostic Trouble Code (DTC) in appropriate SELF-DIAGNOSTICS article or «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  2. Test ORVR vent shut valve. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.

Test ORVR vent shut valve. See SYSTEM & COMPONENT TESTING article.

  1. Check Evaporative Emission (EVAP) control system. See appropriate Diagnostic Trouble Code (DTC) in appropriate SELF-DIAGNOSTICS article or «SYSTEM & COMPONENT TESTING»(ref-3110) article.
  2. Test ORVR vent shut valve. See «SYSTEM & COMPONENT TESTING»(ref-3110) article.

Intermittent Simulation

To reproduce conditions creating an intermittent problem, use following methods

  1. Lightly vibrate component.
  2. Carefully heat component using a hair dryer.
  3. Wiggle or bend wiring harness.
  4. Spray component with water mist.
  5. Remove/apply vacuum source.

Monitor circuit/component voltage or resistance while simulating intermittent problem. If engine is running, monitor for self-diagnostic codes. Use test results to identify a defective component or circuit.

More articles — Engine Controls - Tests W/o Codes