SFI SYSTEM PROBLEM SYMPTOMS TABLE
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Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by cranking the suspected areas in the order they are listed. Replace parts as necessary.
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Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | See page |
|---|---|---|
| Engine does not crank (Does not start) | Battery | - |
| Starter assembly (w/ stop and start system) | ||
| Starter assembly (w/o stop and start system) | ||
| Starter relay | ||
| Starter signal circuit (w/o entry and start system) | ||
| Cranking holding function circuit (w/ entry and start system) | ||
| Clutch start switch assembly (for manual transaxle) | ||
| Park/neutral start switch assembly (for CVT) | ||
| When being restarted due to stop and start system control, engine does not crank (Does not start)*1 | Stop and start system | |
| No initial combustion (Does not start) | ECM power source circuit | |
| VC output circuit (ECM 5 V output) | ||
| Crankshaft position sensor | ||
| Fuel pump control circuit | ||
| Ignition system | ||
| Fuel injector circuit | ||
| Valve timing | ||
| Immobiliser system (w/ entry and start system) | ||
| Immobiliser system (w/o entry and start system) | ||
| Engine cranks normally but difficult to start | Fuel pump control circuit | |
| Fuel pump | ||
| Engine coolant temperature sensor | ||
| Ignition system | ||
| Fuel injector assembly | ||
| Compression | ||
| Fuel injector circuit | ||
| Intake system | ||
| Throttle body assembly | ||
| EGR valve assembly | ||
| Incomplete intermittent combustion occurs (Does not start) | Fuel pump control circuit | |
| Fuel pump | ||
| Fuel lines | - | |
| Ignition circuit | ||
| Ignition system | ||
| Fuel injector assembly | ||
| Crankshaft position sensor | ||
| Valve timing | ||
| High engine speed (Poor idle) | Air conditioning signal circuit (for automatic air conditioning system) | |
| Air conditioning signal circuit (for manual air conditioning system) | ||
| Throttle body assembly | ||
| Throttle body control | - | |
| Engine coolant temperature sensor | ||
| PCV hose | ||
| PCV valve | ||
| ECM power source circuit | ||
| EGR valve assembly | ||
| Low engine speed (Poor idle) | Fuel pump control circuit | |
| Throttle body assembly | ||
| Throttle body control | - | |
| Intake system | ||
| PCV hose | ||
| PCV valve | ||
| EGR valve assembly | ||
| Engine stalls on deceleration | Idle speed (refer to "Low engine speed" symptom) | - |
| Rough idle | Compression (engine mechanical) | |
| Air fuel ratio sensor (bank 1 sensor 1) | ||
| Mass air flow meter | ||
| Ignition system | ||
| Air conditioning signal circuit (for automatic air conditioning system) | ||
| Air conditioning signal circuit (for manual air conditioning system) | ||
| Fuel line (clogged or blocked) | - | |
| Fuel pump | ||
| Intake system | ||
| PCV hose | ||
| PCV valve | ||
| Heated oxygen sensor (bank 1 sensor 2) | ||
| EGR valve assembly | ||
| Hunting (Poor idle) | PCV hose | |
| PCV valve | ||
| Mass air flow meter | ||
| EGR valve assembly | ||
| Air fuel ratio sensor (bank 1 sensor 1) | ||
| Engine stalls during air conditioning operation | Air conditioning signal circuit (compressor circuit) (for automatic air conditioning system) | |
| Air conditioning signal circuit (compressor circuit) (for manual air conditioning system) | ||
| ECM | ||
| Hesitation/Poor acceleration (Poor driveability) | Fuel line | - |
| Fuel pump | ||
| Mass air flow meter | ||
| Throttle body assembly | ||
| Knock sensor | ||
| Valve timing | ||
| Ignition system | ||
| EGR valve assembly | ||
| Surging (Poor driveability) | Fuel line | - |
| Fuel pump control circuit | ||
| Fuel pump | ||
| Ignition system | ||
| Fuel injector assembly | ||
| EGR valve assembly | ||
| Engine stalls soon after starting | Mass air flow meter | |
| Intake system | ||
| Fuel line | - | |
| Fuel pump control circuit | ||
| Fuel pump | ||
| Ignition system | ||
| Fuel injector assembly | ||
| Throttle body assembly | ||
| PCV hose | ||
| PCV system |
*1: w/ Stop and Start System