PROBLEM SYMPTOMS TABLE
HINT:
Symptom | Suspected Area | Link |
---|---|---|
Engine does not crank (Does not start) | Hybrid control system |
|
VC output circuit (ECM 5 V output) |
| |
No initial combustion (Does not start) | ECM power source circuit |
|
VC output circuit (ECM 5 V output) |
| |
Ignition system |
| |
Fuel system |
| |
Port fuel injector assembly |
| |
Direct fuel injector assembly |
| |
Fuel pump (for low pressure side) |
| |
Crankshaft position sensor |
| |
Intake system |
| |
Valve timing |
| |
EGR valve assembly |
| |
Engine cranks normally but difficult to start | ECM power source circuit |
|
Throttle body with motor assembly |
| |
Fuel pump assembly (for high pressure side) |
| |
Fuel pump (for low pressure side) |
| |
Engine coolant temperature sensor |
| |
Fuel system |
| |
Ignition system |
| |
Compression |
| |
Port fuel injector assembly |
| |
Direct fuel injector assembly |
| |
Crankshaft position sensor |
| |
Intake system |
| |
Valve timing |
| |
EGR valve assembly |
| |
Incomplete intermittent combustion occurs (Does not start) | Fuel system |
|
Fuel pump (for low pressure side) |
| |
Ignition system |
| |
Port fuel injector assembly |
| |
Direct fuel injector assembly |
| |
Crankshaft position sensor |
| |
Intake system |
| |
Valve timing |
| |
High engine speed | Throttle body with motor assembly |
|
ECM power source circuit |
| |
PCV system |
| |
Low engine speed (Poor idle) | Fuel system |
|
Throttle body with motor assembly |
| |
Port fuel injector assembly |
| |
Direct fuel injector assembly |
| |
Fuel pump assembly (for high pressure side) |
| |
PCV system |
| |
Intake system |
| |
Rough idle | Flow chart [Rough idling] |
|
Throttle body with motor assembly |
| |
Port fuel injector assembly |
| |
Direct fuel injector assembly |
| |
Fuel pump assembly (for high pressure side) |
| |
Ignition system |
| |
Air fuel ratio sensor (sensor 1) |
| |
Air fuel ratio sensor (sensor 2) |
| |
Mass air flow meter sub-assembly |
| |
Manifold absolute pressure sensor |
| |
Compression |
| |
Fuel system |
| |
Intake system |
| |
Valve timing |
| |
EGR valve assembly |
| |
Hunting (Poor idle) | Throttle body with motor assembly |
|
ECM power source circuit |
| |
Fuel system |
| |
Spark plug |
| |
Intake system |
| |
Drive start control |
| |
Hesitation/Poor acceleration (Poor driveability) | Port fuel injector assembly |
|
Direct fuel injector assembly |
| |
Fuel system |
| |
Fuel pump assembly (for high pressure side) |
| |
Ignition system |
| |
Intake system |
| |
Valve timing |
| |
Brake override system |
| |
Drive start control |
| |
Surging (Poor driveability) | Fuel system |
|
Fuel pump (for low pressure side) |
| |
Ignition system |
| |
Port fuel injector assembly |
| |
Direct fuel injector assembly |
| |
Engine stalls soon after starting | Fuel system |
|
Throttle body with motor assembly |
| |
Crankshaft position sensor |
| |
Ignition system |
| |
Fuel pump assembly (for high pressure side) |
| |
Intake system |
| |
Valve timing |
| |
EGR valve assembly |
| |
MIL (Malfunction Indicator Lamp) malfunction | MIL Circuit |
|
Meter/Gauge system |
| |
Unable/difficult to refuel | Fuel system (canister, refueling valve, roll over valve, fuel tank, etc.) | - |