Problem Symptoms Table [08/2015 - ]
HINT:
- 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.
SFI SYSTEM
| Symptom | Suspected Area | Refer to |
|---|---|---|
| Engine does not crank (Does not start) | Hybrid control system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - ] |
| VC output circuit | Refer to VC Output Circuit [08/2015 - ] | |
| No initial combustion (Does not start) | ECM power source circuit | Refer to ECM Power Source Circuit [08/2015 - ] |
| VC output circuit | Refer to VC Output Circuit [08/2015 - ] | |
| Crankshaft position sensor | Refer to INSPECTION [08/2015 - ] | |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit [08/2015 - ] | |
| Ignition system | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| Fuel injector circuit | Refer to Fuel Injector Circuit [08/2015 - ] | |
| Valve timing (check for loose or jumped teeth on timing chain) | Refer to REASSEMBLY [08/2015 - ] - Step 32 | |
| Engine cranks normally but difficult to start | Fuel pump control circuit | Refer to Fuel Pump Control Circuit [08/2015 - ] |
| Fuel pump | Refer to INSPECTION [08/2015 - ] | |
| Engine coolant temperature sensor | Refer to INSPECTION [08/2015 - ] | |
| Ignition system | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| Fuel injector assembly | Refer to INSPECTION [08/2015 - ] | |
| Compression | Refer to ON-VEHICLE INSPECTION [08/2015 - ] - Step 8 | |
| Fuel injector circuit | Refer to Fuel Injector Circuit [08/2015 - ] | |
| Intake system | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| Throttle body assembly | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| EGR valve assembly | Refer to INSPECTION [08/2015 - ] | |
| ECM power source circuit | Refer to ECM Power Source Circuit [08/2015 - ] | |
| Incomplete intermittent combustion occurs (Does not start) | Fuel pump control circuit | Refer to Fuel Pump Control Circuit [08/2015 - ] |
| Fuel pump | Refer to INSPECTION [08/2015 - ] | |
| Fuel line | - | |
| Ignition system | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| Fuel injector assembly | Refer to INSPECTION [08/2015 - ] | |
| EGR valve assembly | Refer to INSPECTION [08/2015 - ] | |
| Crankshaft position sensor | Refer to INSPECTION [08/2015 - ] | |
| Valve timing (check for loose or jumped teeth on timing chain) | Refer to REASSEMBLY [08/2015 - ] - Step 32 | |
| High engine idle speed | Throttle body assembly | Refer to ON-VEHICLE INSPECTION [08/2015 - ] |
| Intake system | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| Engine coolant temperature sensor | Refer to INSPECTION [08/2015 - ] | |
| PCV system | Refer to COMPONENTS [08/2015 - ] | |
| ECM power source circuit | Refer to ECM Power Source Circuit [08/2015 - ] | |
| Low engine idle speed (Poor idle) | Fuel pump control circuit | Refer to Fuel Pump Control Circuit [08/2015 - ] |
| Throttle body assembly | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| Intake system | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| PCV system | Refer to COMPONENTS [08/2015 - ] | |
| Rough idle | Compression | Refer to ON-VEHICLE INSPECTION [08/2015 - ] - Step 8 |
| Air fuel ratio sensor | Refer to INSPECTION [08/2015 - ] | |
| Heated oxygen sensor | Refer to INSPECTION [08/2015 - ] | |
| Mass air flow meter sub-assembly | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| Manifold absolute pressure sensor | Refer to REMOVAL [08/2015 - ] | |
| Ignition system | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| Fuel line | - | |
| Valve timing (check for loose or jumped teeth on timing chain) | Refer to REASSEMBLY [08/2015 - ] - Step 32 | |
| Fuel pump | Refer to INSPECTION [08/2015 - ] | |
| Intake system | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| PCV system | Refer to COMPONENTS [08/2015 - ] | |
| EGR valve assembly | Refer to INSPECTION [08/2015 - ] | |
| Hunting | PCV system | Refer to COMPONENTS [08/2015 - ] |
| Air fuel ratio sensor | Refer to INSPECTION [08/2015 - ] | |
| Mass air flow meter sub-assembly | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| Hesitation/Poor acceleration | Fuel line | - |
| Fuel pump | Refer to INSPECTION [08/2015 - ] | |
| Valve timing (check for loose or jumped teeth on timing chain) | Refer to REASSEMBLY [08/2015 - ] - Step 32 | |
| Mass air flow meter sub-assembly | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| Throttle body assembly | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| Knock control sensor | Refer to INSPECTION [08/2015 - ] | |
| Brake override system | Refer to Brake Override System [08/2015 - ] | |
| Surging (Poor driveability) | Fuel line | - |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit [08/2015 - ] | |
| Fuel pump | Refer to INSPECTION [08/2015 - ] | |
| Ignition system | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| Fuel injector assembly | Refer to INSPECTION [08/2015 - ] | |
| Engine stalls soon after starting | Mass air flow meter sub-assembly | Refer to ON-VEHICLE INSPECTION [08/2015 - ] |
| Intake system | Refer to ON-VEHICLE INSPECTION [08/2015 - ] | |
| Manifold absolute pressure sensor | Refer to REMOVAL [08/2015 - ] | |
| Fuel line | - | |
| Valve timing (check for loose or jumped teeth on timing chain) | Refer to REASSEMBLY [08/2015 - ] - Step 32 | |
| EGR valve assembly | Refer to INSPECTION [08/2015 - ] | |
| Engine coolant temperature indicator light illuminate or blinks | Engine coolant leaks | Refer to ON-VEHICLE INSPECTION [08/2015 - ] - Step 1 |
| Engine water pump assembly | Refer to REMOVAL [08/2015 - ] | |
| Exhaust heat recirculation system | Refer to Exhaust Heat Recirculation System Circuit [08/2015 - ] | |
| Unable/difficult to refuel | Fuel system (canister, refueling valve, roll over valve, fuel tank, etc.) | - |