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 | Link |
|---|---|---|
| Engine does not crank (Does not start) | Battery | |
| Park/neutral position switch (K313 CVT) *6 | ||
| Park/neutral position switch (K313F CVT) *7 | ||
| Clutch start switch assembly*2 | ||
| Flow chart [Starter signal circuit] | ||
| Starter relay assembly | ||
| Entry and start system (for start function)*3 | ||
| Stop and start system*5 | ||
| Flow chart [VC output circuit]*3 | ||
| Starter assembly*10 | ||
| Starter assembly*11 | ||
| Starter assembly*12 | ||
| Starter assembly*13 | ||
| No initial combustion (Does not start) | Immobiliser system*3 | |
| Immobiliser system*4 | ||
| Flow chart [ECM power source circuit] | ||
| Flow chart [VC output circuit] | ||
| Ignition system | ||
| Ignition circuit | ||
| Flow chart [Fuel pump control circuit] | ||
| Fuel pump (for low pressure side)*6 | ||
| Fuel pump (for low pressure side)*7 | ||
| Fuel injector assembly | ||
| Fuel injector circuit | ||
| Crankshaft position sensor | ||
| Camshaft position sensor (for intake camshaft) | ||
| Camshaft position sensor (for exhaust camshaft) | ||
| Intake system | ||
| Valve timing (check for loose or jumped teeth on timing chain) | ||
| ECM | ||
| No. 1 valve rocker arm sub-assembly*14 | ||
| Engine cranks normally but difficult to start | Flow chart [ECM power source circuit] | |
| Flow chart [Engine difficult to start] | ||
| Throttle body with motor assembly | ||
| Fuel pump assembly (for high pressure side) | ||
| Fuel pump (for low pressure side)*6 | ||
| Fuel pump (for low pressure side)*7 | ||
| Engine coolant temperature sensor | ||
| Flow chart [Fuel pump control circuit] | ||
| Ignition system | ||
| Ignition circuit | ||
| Spark plug | ||
| Compression | ||
| Fuel injector assembly | ||
| Crankshaft position sensor | ||
| Intake system | ||
| PCV system | ||
| Valve timing (check for loose or jumped teeth on timing chain) | ||
| No. 1 valve rocker arm sub-assembly*14 | ||
| Incomplete intermittent combustion occurs (Does not start) | Flow chart [Fuel pump control circuit] | |
| Fuel pump (for Low pressure side)*6 | ||
| Fuel pump (for Low pressure side)*7 | ||
| Fuel pump assembly (for High pressure side) | ||
| Fuel line | - | |
| Ignition system | ||
| Ignition circuit | ||
| Fuel injector circuit | ||
| Fuel injector assembly | ||
| Spark plug | ||
| Flow chart [ECM power source circuit] | ||
| Flow chart [Starter signal circuit] | ||
| Crankshaft position sensor | ||
| Camshaft position sensor (for intake camshaft) | ||
| Camshaft position sensor (for exhaust camshaft) | ||
| Intake system | ||
| Valve timing (check for loose or jumped teeth on timing chain) | ||
| High engine speed | Throttle body with motor assembly | |
| Air conditioning signal circuit (for Automatic Air Conditioning System)*11 | ||
| Air conditioning signal circuit (for Automatic Air Conditioning System)*12 | ||
| Air conditioning signal circuit (for Manual Air Conditioning System) | ||
| Flow chart [ECM power source circuit] | ||
| Flow chart [Fuel pump control circuit] | ||
| Engine coolant temperature sensor | ||
| PCV valve | ||
| Intake system | ||
| PCV system | ||
| Low engine speed (Poor idle) | Flow chart [Fuel pump control circuit] | |
| Throttle body with motor assembly | ||
| Fuel injector assembly | ||
| Fuel pump assembly (for High pressure side) | ||
| PCV valve | ||
| PCV system | ||
| Intake system | ||
| No. 1 turbo pressure sensor | ||
| Electric water pump assembly | ||
| Rough idle | Flow chart [Rough idling] | |
| Throttle body with motor assembly | ||
| Fuel injector assembly | ||
| Fuel pump assembly (for High pressure side) | ||
| Fuel pump (for Low pressure side)*6 | ||
| Fuel pump (for Low pressure side)*7 | ||
| Ignition system | ||
| Compression | ||
| Flow chart [Fuel pump control circuit] | ||
| Spark plug | ||
| Intake system | ||
| Valve timing (check for loose or jumped teeth on timing chain) | ||
| No. 1 valve rocker arm sub-assembly*14 | ||
| No. 1 turbo pressure sensor | ||
| Electric water pump assembly | ||
| External part malfunction (Increase in load: A/C system, CVT system*1, etc.) | - | |
| Hunting (Poor idle) | Throttle body with motor assembly | |
| Flow chart [ECM power source circuit] | ||
| Flow chart [Fuel pump control circuit] | ||
| Spark plug | ||
| Intake system | ||
| PCV valve | ||
| Mass air flow meter | ||
| Flow chart [Drive start control system] | ||
| Electric water pump assembly | ||
| Hesitation/Poor acceleration (Poor driveability) | Fuel injector assembly | |
| Flow chart [Fuel pump control circuit] | ||
| Fuel pump assembly (for High pressure side) | ||
| Fuel pump (for Low pressure side)*6 | ||
| Fuel pump (for Low pressure side)*7 | ||
| Fuel line | - | |
| Ignition system | ||
| Spark plug | ||
| Intake system | ||
| Valve timing (check for loose or jumped teeth on timing chain) | ||
| No. 1 turbo pressure sensor | ||
| Turbocharger system (intake system air leak, blockage, clogged) | ||
| Vacuum regulating valve assembly | ||
| Waste gate valve (turbocharger sub-assembly) | ||
| Waste gate valve actuator (turbocharger sub-assembly) | ||
| Air by-pass valve (turbocharger sub-assembly) | ||
| Turbocharger sub-assembly | ||
| Electric water pump assembly | ||
| No. 1 valve rocker arm sub-assembly*14 | ||
| Flow chart [Brake override system] | ||
| Flow chart [Drive start control system] | ||
| Lack of power | Flow chart [Lack of power] | |
| Turbocharger system (intake system air leak, blockage, clogged) | ||
| Flow chart [Lack of power (turbocharger system)] | ||
| Vacuum regulating valve assembly | ||
| Waste gate valve (turbocharger sub-assembly) | ||
| Waste gate valve actuator (turbocharger sub-assembly) | ||
| Air by-pass valve (turbocharger sub-assembly) | ||
| Turbocharger sub-assembly | ||
| Surging (Poor driveability) | Flow chart [Fuel pump control circuit] | |
| Spark plug | ||
| Fuel pump assembly (for high pressure side) | ||
| Fuel pump (for low pressure side)*6 | ||
| Fuel pump (for low pressure side)*7 | ||
| Ignition circuit | ||
| Ignition system | ||
| Fuel injector circuit | ||
| Mass air flow meter | ||
| Compression | ||
| Fuel injector assembly | ||
| Electric water pump assembly | ||
| No. 1 valve rocker arm sub-assembly*14 | ||
| After fire | Ignition system | |
| Fuel injector assembly | ||
| Engine stalls soon after starting | Flow chart [Engine stalls] | |
| Flow chart [Fuel pump control circuit] | ||
| Throttle body with motor assembly | ||
| Crankshaft position sensor | ||
| Ignition system | ||
| Fuel pump (for high pressure side) | ||
| Intake system | ||
| Valve timing (check for loose or jumped teeth on timing chain) | ||
| No. 1 turbo pressure sensor | ||
| Electric water pump assembly | ||
| Shift solenoid valve SL (K313 CVT) *8 | ||
| Shift solenoid valve SL (K313F CVT) *8 | ||
| Shift solenoid valve SL (K313 CVT) *9 | ||
| Shift solenoid valve SL (K313F CVT) *9 | ||
| Engine stalls soon after slow down | Flow chart [Engine stalls] | |
| Fuel injector assembly | ||
| Throttle body with motor assembly | ||
| ECM | ||
| Crankshaft position sensor | ||
| Ignition system | ||
| Air by-pass valve (turbocharger sub-assembly) | ||
| Engine stalls only during air conditioning operation | Air conditioning signal circuit (for Automatic Air Conditioning System)*11 | |
| Air conditioning signal circuit (for Automatic Air Conditioning System)*12 | ||
| Air conditioning signal circuit (for Manual Air Conditioning System) | ||
| ECM | ||
| MIL (malfunction indicator lamp) malfunction | MIL Circuit | |
| Meter/Gauge system | ||
| White smoke emitted | Flow chart [Turbocharger oil leak and white smoke] | |
| Turbocharger noise | Flow chart [Turbocharger noise] |
*1: for CVT
*2: for Manual Transaxle
*3: w/ Entry and Start System
*4: w/o Entry and Start System
*5: w/ Stop and Start System
*6: for 2WD
*7: for AWD
*8: Euro-OBD
*9: Except Euro-OBD
*10: for Denso Made with Stop and Start System
*11: for Denso Made without Stop and Start System
*12: for Valeo Made Cold Area Specification Vehicles
*13: for VALEO Madefor Valeo Made except Cold Area Specification Vehicles
Tech Tips
*14: 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 higher). 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.