Use the table below to help determine the cause of the problem symptom. The potential cases 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.
| Symptom | Suspected Area | See page |
|---|---|---|
| Engine does not crank (does not start) | Immobiliser system (w/ Smart Entry and Start System) | |
| Immobiliser system (w/o Smart Entry and Start System) | ||
| Starter assembly | ||
| Starter relay | ||
| Starter signal circuit (w/o Smart Entry and Start System) | ||
| Cranking holding function circuit (w/ Smart Entry and Start System) | ||
| VC output circuit (ECM 5 V circuit) | ||
| No initial combustion (does not start) | ECM power source circuit | |
| Ignition system | ||
| Fuel pump control circuit | ||
| Fuel injector assembly | ||
| Crankshaft position sensor | ||
| VC output circuit (ECM 5 V circuit) | ||
| ECM | - | |
| Difficult to start (engine cranks normally) | Electronic throttle control system | |
| Fuel pump control circuit | ||
| Ignition system | ||
| Spark plug | ||
| Compression | ||
| Fuel injector assembly | ||
| Crankshaft position sensor | ||
| ECM power source circuit | ||
| Difficult to start with cold engine | Starter signal circuit (w/o Smart Entry and Start System) | |
| Cranking holding function circuit (w/ Smart Entry and Start System) | ||
| Electronic throttle control system | ||
| Fuel pump control circuit | ||
| Spark plug | ||
| Ignition system | ||
| Fuel injector assembly | ||
| Engine coolant temperature sensor | ||
| Difficult to start with hot engine | Starter signal circuit (w/o Smart Entry and Start System) | |
| Cranking holding function circuit (w/ Smart Entry and Start System) | ||
| Fuel pump control circuit | ||
| Spark plug | ||
| Ignition system | ||
| Fuel injector assembly | ||
| Engine coolant temperature sensor | ||
| High engine idling speed (poor idling) | Electronic throttle control system | |
| ECM power source circuit | ||
| Air conditioning signal circuit (Compressor circuit) | - | |
| Acoustic control induction system | ||
| PCV hose | - | |
| ECM | - | |
| Low engine idling speed (poor idling) | Electronic throttle control system | |
| ECM power source circuit | ||
| Air conditioning signal circuit (Compressor circuit) | - | |
| Acoustic control induction system | ||
| PCV hose | - | |
| Fuel injector assembly | ||
| ECM | - | |
| Rough idling (poor idling) | Electronic throttle control system | |
| Fuel injector assembly | ||
| Ignition system | ||
| Compression | ||
| Fuel pump control circuit | ||
| Spark plug | ||
| Acoustic control induction system | ||
| PCV hose | - | |
| Hunting (poor idling) | Electronic throttle control system | |
| ECM power source circuit | ||
| Fuel pump control circuit | ||
| Spark plug | ||
| Ignition system | ||
| Fuel injector assembly | ||
| Acoustic control induction system | ||
| PCV hose | - | |
| Hesitation/Poor acceleration (poor driveability) | Fuel injector assembly | |
| Fuel pump control circuit | ||
| Ignition system | ||
| Spark plug | ||
| Air intake control system | ||
| Automatic transaxle faulty (for U151E) | ||
| Automatic transaxle faulty (for U151F) | ||
| Brake override system | ||
| Surging (poor driveability) | Fuel pump control circuit | |
| Spark plug | ||
| Ignition system | ||
| Fuel injector assembly | ||
| Engine stalls soon after starting | Fuel pump control circuit | |
| Electronic throttle control system | ||
| Crankshaft position sensor | ||
| Spark plug | ||
| Ignition system | ||
| Fuel injector assembly | ||
| Engine stalls during A/C operation | Air conditioning signal circuit (Compressor circuit) | - |
| ECM | - | |
| Engine vibrates frequently when idling (Active Control) | Active control engine mount circuit |