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) | Engine immobiliser system | |
| Hybrid control system | ||
| VC output circuit | ||
| Entry and start system (for start function) | ||
| 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 | ||
| 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 | ||
| ECM power source circuit | ||
| Incomplete intermittent combustion occurs (Does not start) | Fuel pump control circuit | |
| Fuel pump | ||
| Fuel line | - | |
| Ignition system | ||
| Fuel injector assembly | ||
| EGR valve assembly | ||
| Crankshaft position sensor | ||
| Valve timing | ||
| High engine idle speed | Throttle body assembly | |
| Intake system | ||
| Engine coolant temperature sensor | ||
| PCV system | ||
| ECM power source circuit | ||
| Low engine idle speed (Poor idle) | Fuel pump control circuit | |
| Throttle body assembly | ||
| Intake system | ||
| PCV system | ||
| Engine stalls on deceleration | Idle speed (refer to "Low engine speed") | - |
| EGR valve assembly | ||
| Rough idle | Compression | |
| Air fuel ratio sensor | ||
| Heated oxygen sensor | ||
| Mass air flow meter sub-assembly | ||
| Manifold absolute pressure sensor | ||
| Ignition system | ||
| Fuel line | - | |
| Valve timing | ||
| Fuel pump | ||
| Intake system | ||
| PCV system | ||
| EGR valve assembly | ||
| Hunting | PCV system | |
| Air fuel ratio sensor | ||
| Mass air flow meter sub-assembly | ||
| Hesitation/Poor acceleration | Fuel line | - |
| Fuel pump | ||
| Valve timing | ||
| Mass air flow meter sub-assembly | ||
| Throttle body assembly | ||
| Knock control sensor | ||
| Brake override system | ||
| Surging (Poor driveability) | Fuel line | - |
| Fuel pump control circuit | ||
| Fuel pump | ||
| Ignition system | ||
| Fuel injector assembly | ||
| Engine stalls soon after starting | Mass air flow meter sub-assembly | |
| Intake system | ||
| Manifold absolute pressure sensor | ||
| Fuel line | - | |
| Valve timing | ||
| EGR valve assembly | ||
| Engine coolant temperature indicator light illuminate or blinks | Engine coolant leaks | |
| Engine water pump assembly | ||
| Exhaust heat recirculation system (w/ exhaust heat recirculation system) |