PROBLEM SYMPTOMS TABLE
HINT:
Symptom | Suspected Area | Link |
---|---|---|
Engine does not crank (Does not start) | Flow chart [Engine difficult to start] |
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Flow chart [Engine difficult to start] (Vehicle Control History Code: X0810, X0811 and/or X0812) |
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Battery |
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ST relay |
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Starter assembly |
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Starter signal circuit |
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Smart access system with push-button start (for Start Function, Gasoline Model) |
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VC output circuit (ECM 5 V output) |
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Park/Neutral position switch assembly |
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No initial combustion (Does not start) | ECM power source circuit |
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VC output circuit (ECM 5 V output) |
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Flow chart [Engine difficult to start] |
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Flow chart [Engine difficult to start] (Vehicle Control History Code: X0810, X0811 and/or X0812) |
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Ignition system |
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Fuel system |
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Port fuel injector assembly |
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Direct fuel injector assembly |
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Crankshaft position sensor |
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Intake system |
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Valve timing |
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EGR valve assembly |
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No. 1 valve rocker arm sub-assembly* |
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Engine cranks normally but difficult to start | ECM power source circuit |
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Flow chart [Engine difficult to start] |
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Flow chart [Engine difficult to start] (Vehicle Control History Code: X0810, X0811 and/or X0812) |
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Throttle body with motor assembly |
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Fuel pump assembly (for high pressure side) |
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Fuel pump (for low pressure side) |
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Engine coolant temperature sensor |
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Fuel system |
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Ignition system |
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Spark plug |
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Compression |
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Port fuel injector assembly |
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Direct fuel injector assembly |
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Crankshaft position sensor |
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Intake system |
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Valve timing |
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EGR valve assembly |
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No. 1 valve rocker arm sub-assembly* |
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Incomplete intermittent combustion occurs (Does not start) | Flow chart [Engine difficult to start] |
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Flow chart [Engine difficult to start] (Vehicle Control History Code: X0810, X0811 and/or X0812) |
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Fuel system |
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Ignition system |
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Port fuel injector assembly |
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Direct fuel injector assembly |
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Crankshaft position sensor |
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Intake system |
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Valve timing |
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High engine speed | Throttle body with motor assembly |
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ECM power source circuit |
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PCV system |
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Low engine speed (Poor idle) | Flow chart [Rough idling] |
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Flow chart [Rough idling] (Vehicle Control History Code: X0821, X0822, X0823, X0824, X082A, X082D and/or X082E) |
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Fuel system |
| |
Throttle body with motor assembly |
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Port fuel injector assembly |
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Direct fuel injector assembly |
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Fuel pump assembly (for high pressure side) |
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PCV system |
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Intake system |
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Rough idle | Flow chart [Rough idling] |
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Flow chart [Rough idling] (Vehicle Control History Code: X0821, X0822, X0823, X0824, X082A, X082D and/or X082E) |
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Throttle body with motor assembly |
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Port fuel injector assembly |
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Direct fuel injector assembly |
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Fuel pump assembly (for high pressure side) |
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Ignition system |
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Air fuel ratio sensor (sensor 1) |
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Air fuel ratio sensor (sensor 2) |
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Mass air flow meter sub-assembly |
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Manifold absolute pressure sensor |
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Compression |
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Fuel system |
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Spark plug |
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Intake system |
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Valve timing |
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EGR valve assembly |
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No. 1 valve rocker arm sub-assembly* |
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Hunting (Poor idle) | Throttle body with motor assembly |
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ECM power source circuit |
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Flow chart [Rough idling] |
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Flow chart [Rough idling] (Vehicle Control History Code: X0821, X0822, X0823, X0824, X082A, X082D and/or X082E) |
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Fuel system |
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Spark plug |
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Intake system |
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Drive start control |
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Hesitation/Poor acceleration (Poor driveability) | Flow chart [Rough idling] |
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Flow chart [Rough idling] (Vehicle Control History Code: X0821, X0822, X0823, X0824, X082A, X082D and/or X082E) |
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Port fuel injector assembly |
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Direct fuel injector assembly |
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Fuel system |
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Fuel pump assembly (for high pressure side) |
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Ignition system |
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Spark plug |
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Intake system |
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Valve timing |
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No. 1 valve rocker arm sub-assembly* |
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Brake override system |
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Drive start control |
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Lack of power | Flow chart [Lack of power] |
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Flow chart [Lack of power] (Vehicle Control History Code: X0844, X0845) |
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Surging (Poor driveability) | Flow chart [Rough idling] |
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Flow chart [Rough idling] (Vehicle Control History Code: X0821, X0822, X0823, X0824, X082A, X082D and/or X082E) |
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Fuel system |
| |
Spark plug |
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Port fuel injector assembly |
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Direct fuel injector assembly |
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No. 1 valve rocker arm sub-assembly* |
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Engine stalls soon after starting | Flow chart [Engine stalls] |
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Flow chart [Engine stalls] (Vehicle Control History Code: X0800 and/or X0803) |
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Fuel system |
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Throttle body with motor assembly |
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Crankshaft position sensor |
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Ignition system |
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Fuel pump assembly (for high pressure side) |
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Intake system |
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Valve timing |
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EGR valve assembly |
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Engine stalls soon after slow down | Flow chart [Engine stalls] |
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Flow chart [Engine stalls] (Vehicle Control History Code: X0800 and/or X0803) |
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Port fuel injector assembly |
| |
Direct fuel injector assembly |
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Throttle body with motor assembly |
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ECM |
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Crankshaft position sensor |
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Ignition system |
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MIL (Malfunction Indicator Lamp) malfunction | MIL Circuit |
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Meter/Gauge system |
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Unable/difficult to refuel | Fuel system (canister, refueling valve, roll over valve, fuel tank, etc.) | - |
Engine vibrates frequently when idling (Active control engine mount system) | Active control engine mount circuit |
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Drive mode does not change | Drive mode switch circuit |
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HINT:
*: Check "Fuel Cut Elapsed Time" in the Data List. If the elapsed time is over 0 sec, then the engine speed is high (the engine speed at which fuel cut occurs + 500 rpm or more). In this situation, there is a possibility that a No. 1 valve rocker arm sub-assembly will become loose and malfunction, check that the No. 1 valve rocker arm sub-assemblies are properly installed.
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