Tech Tips
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 checking the suspected areas in the order they are listed. Replace parts as necessary.
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 (for 0.8 kW type) | ||
| Starter (for 1.0 kW type) | ||
| Cranking holding function circuit (w/ Entry and Start System) | ||
| Starter signal circuit | ||
| Starter relay | ||
| Clutch start switch assembly | ||
| Park/neutral position switch assembly | ||
| No initial combustion (Does not start) | ECM power source circuit | |
| VC output circuit | ||
| Crankshaft position sensor | ||
| Fuel pump control circuit | ||
| Ignition system | ||
| Fuel injector circuit | ||
| Valve timing | ||
| Camshaft position sensor | ||
| ECM | ||
| 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 | ||
| EGR | ||
| Engine coolant temperature sensor | ||
| Ignition system | ||
| Compression | ||
| Fuel injector assembly | ||
| Fuel injector circuit | ||
| Air induction system | ||
| Throttle body assembly | ||
| Incomplete intermittent combustion occurs (Does not start) | Fuel pump control circuit | |
| Fuel pump | ||
| Ignition circuit | ||
| Ignition system | ||
| Fuel injector assembly | ||
| Crankshaft position sensor | ||
| Valve timing | ||
| Camshaft position sensor | ||
| High engine speed (Poor idle) | A/C signal circuit | - |
| Throttle body assembly | ||
| Engine coolant temperature sensor | ||
| PCV valve and hose | ||
| ECM power source circuit | ||
| Low engine speed (Poor idle) | Fuel pump control circuit | |
| Fuel pump | ||
| Throttle body assembly | ||
| Air induction system | ||
| PCV valve and hose | ||
| Engine stalls on deceleration | Idle speed (refer to "Low engine speed" symptom) | - |
| Rough idle | Compression | |
| Air fuel ratio sensor | ||
| Heated oxygen sensor (Sensor 1) | ||
| Manifold absolute pressure sensor | ||
| Spark plug | ||
| Ignition system | ||
| A/C signal circuit | - | |
| Fuel pump control circuit | ||
| Fuel pump | ||
| Air induction system | ||
| PCV valve and hose | ||
| Active control engine mount system | ||
| Hunting (Poor idling) | Throttle body assembly | |
| PCV valve and hose | ||
| Manifold absolute pressure sensor | ||
| Air fuel ratio sensor | ||
| Engine stalls during A/C operation | A/C signal circuit (Compressor circuit) | - |
| ECM | ||
| Hesitation/Poor acceleration (Poor driveability) | Fuel pump control circuit | |
| Fuel pump | ||
| Valve timing | ||
| Manifold absolute pressure sensor | ||
| Throttle body assembly | ||
| Spark plug | ||
| Ignition system | ||
| Fuel injector assembly | ||
| Air induction system | ||
| Compression | ||
| Surging (Poor driveability) | Fuel pump control circuit | |
| Fuel pump | ||
| Ignition system | ||
| Fuel injector assembly | ||
| Spark plug | ||
| Manifold absolute pressure sensor | ||
| Variable valve timing system | ||
| Compression | ||
| Engine stalls soon after starting | Manifold absolute pressure sensor | |
| Air induction system | ||
| Fuel pump control circuit | ||
| Fuel pump | ||
| Spark plug | ||
| Ignition system | ||
| Fuel injector assembly | ||
| Variable valve timing system | ||
| Throttle body assembly | ||
| PCV valve and hose | ||
| Compression |