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*3 | |
| Battery*4 | ||
| ST relay | ||
| ST NO. 2 relay*8 | ||
| Park/neutral position switch*1 | ||
| Clutch start switch assembly*2 | ||
| Flow chart [Starter signal circuit] | ||
| Stop and Start System*3 | ||
| Entry and start system (for start function) | ||
| Flow chart [VC output circuit] | ||
| Starter assembly*5 | ||
| Starter assembly*6 | ||
| Starter assembly*7 | ||
| Starter assembly*8 | ||
| No initial combustion (Does not start) | ECM power source circuit | |
| Flow chart [VC output circuit] | ||
| Flow chart [Fuel pump control circuit] | ||
| Fuel pump | ||
| Flow chart [Fuel injector circuit] | ||
| Fuel injector assembly | ||
| Immobiliser system*9 | ||
| Immobiliser system*10 | ||
| Flow chart [Ignition circuit] | ||
| Ignition system | ||
| Crankshaft position sensor | ||
| Camshaft position sensor (for exhaust camshaft) | ||
| Valve timing (check for loose or jumped teeth on timing chain) | ||
| No. 1 valve rocker arm sub-assembly*15 | ||
| Engine cranks normally but difficult to start | Flow chart [Fuel pump control circuit] | |
| Fuel pump | ||
| Flow chart [Fuel injector circuit] | ||
| Fuel injector assembly | ||
| Flow chart [Ignition circuit] | ||
| Ignition system | ||
| Spark plug | ||
| Engine coolant temperature sensor | ||
| EGR valve assembly | ||
| Compression | ||
| Crankshaft position sensor | ||
| Flow chart [ECM power source circuit] | ||
| Flow chart [Starter signal circuit] | ||
| Intake system | ||
| Throttle body with motor assembly | ||
| Flow chart [Engine difficult to start] | ||
| No. 1 valve rocker arm sub-assembly*15 | ||
| Incomplete intermittent combustion occurs (Does not start) | Flow chart [Fuel pump control circuit] | |
| Fuel pump | ||
| Flow chart [Fuel injector circuit] | ||
| Fuel injector assembly | ||
| Fuel lines | - | |
| Flow chart [Ignition circuit] | ||
| Ignition system | ||
| Spark plug | ||
| Crankshaft position sensor | ||
| Camshaft position sensor (for exhaust camshaft) | ||
| Flow chart [Starter signal circuit] | ||
| Throttle body with motor assembly | ||
| Intake system | ||
| Valve timing (check for loose or jumped teeth on timing chain) | ||
| High engine speed | Air conditioning signal circuit*13 | |
| Air conditioning signal circuit*14 | ||
| Throttle body with motor assembly | ||
| Engine coolant temperature sensor | ||
| Intake system | ||
| PCV valve | ||
| PCV hose | ||
| Low engine speed (Poor idle) | Flow chart [Fuel pump control circuit] | |
| Fuel pump | ||
| Throttle body with motor assembly | ||
| Intake system | ||
| Air conditioning signal circuit*13 | ||
| Air conditioning signal circuit*14 | ||
| PCV valve | ||
| PCV hose | ||
| Rough idle | Flow chart [Lack of power] | Click here |
| Flow chart [Rough idling] | ||
| Flow chart [Fuel pump control circuit] | ||
| Fuel pump | ||
| Flow chart [Fuel injector circuit] | ||
| Fuel injector assembly | ||
| Fuel line | - | |
| Valve timing (check for loose or jumped teeth on timing chain) | ||
| Compression | ||
| Air fuel ratio sensor | ||
| Heated oxygen sensor | ||
| EGR valve assembly | ||
| Purge VSV | ||
| Mass air flow meter | ||
| Flow chart [Ignition circuit] | ||
| Ignition system | ||
| Spark plug | ||
| Knock sensor | ||
| Intake system | ||
| Throttle body with motor assembly | ||
| PCV valve | ||
| PCV hose | ||
| No. 1 valve rocker arm sub-assembly*15 | ||
| External part malfunction (Increase in load: A/C system, etc.) | - | |
| Hunting (Poor idle) | Intake system | |
| Throttle body with motor assembly | ||
| Mass air flow meter | ||
| Air fuel ratio sensor | ||
| PCV valve | ||
| PCV hose | ||
| Flow chart [Fuel pump control circuit] | ||
| Fuel pump | ||
| Hesitation and/or poor acceleration (Poor driveability) | Flow chart [Lack of power] | |
| Flow chart [Fuel pump control circuit] | ||
| Fuel pump | ||
| Flow chart [Fuel injector circuit] | ||
| Fuel injector assembly | ||
| Fuel lines | - | |
| Intake system | ||
| Throttle body with motor assembly | ||
| Mass air flow meter | ||
| Flow chart [Ignition circuit] | ||
| Ignition system | ||
| Compression | ||
| Variable Valve Timing (VVT) system | ||
| Valve timing (check for loose or jumped teeth on timing chain) | ||
| Knock sensor | ||
| Flow chart [ECM power source circuit] | ||
| Flow chart [Brake override system] | ||
| No. 1 valve rocker arm sub-assembly*15 | ||
| Lack of power | Flow chart [Lack of power] | |
| Surging (Poor driveability) | Flow chart [Fuel pump control circuit] | |
| Fuel pump | ||
| Flow chart [Fuel injector circuit] | ||
| Fuel injector assembly | ||
| Flow chart [ECM power source circuit] | ||
| Flow chart [Ignition circuit] | ||
| Ignition system | ||
| Spark plug | ||
| Mass air flow meter | ||
| Variable Valve Timing (VVT) system | ||
| Compression | ||
| No. 1 valve rocker arm sub-assembly*15 | ||
| Engine stalls soon after starting | Flow chart [Engine stalls] | |
| Flow chart [Fuel pump control circuit] | ||
| Fuel pump | ||
| Flow chart [Fuel injector circuit] | ||
| Fuel injector assembly | ||
| Flow chart [ECM power source circuit] | ||
| Flow chart [Ignition circuit] | ||
| Ignition system | ||
| Spark plug | ||
| Intake system | ||
| PCV valve and hose | ||
| Mass air flow meter | ||
| Compression | ||
| Shift solenoid valve SL (K312 CVT)*11 | ||
| Shift solenoid valve SL (K312 CVT)*12 | ||
| EGR valve assembly | ||
| No. 1 valve rocker arm sub-assembly*15 | ||
| Engine stalls only during A/C operation | Air conditioning signal circuit*13 | |
| Air conditioning signal circuit*14 | ||
| ECM |
*1: for CVT
*2: for Manual Transaxle
*3: w/ Stop and Start System
*4: w/o Stop and Start System
*5: except Cold Area Specification Vehicles
*6: for cold Area Specification Vehicles
*7: for Transaxle CVT with Stop and Start System
*8: for Transaxle MT with Stop and Start System
*9: w/ Entry and Start System
*10: w/o Entry and Start System
*11: Euro-OBD
*12: Except Euro-OBD
*13: for Automatic Air Conditioning System
*14: for Manual Air Conditioning System
*15: Check "Fuel Cut Elps 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.