Problem Symptoms Table
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 | |
|---|---|---|
| Engine does not crank (Does not start) | Immobiliser system (w/ Smart Key System) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| Immobiliser system (w/o Smart Key System) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Starter signal circuit (w/o Smart Key System) | Refer to Starter Signal Circuit | |
| Cranking holding function circuit (w/ Smart Key System) | Refer to Cranking Holding Function Circuit | |
| Starter assembly | Refer to INSPECTION | |
| No initial combustion (Does not start) | ECM power source circuit | Refer to ECM Power Source Circuit |
| VC output circuit (ECM 5 V output) | Refer to VC Output Circuit | |
| Crankshaft position sensor | Refer to INSPECTION | |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| Valve timing | Refer to PROCEDURE - Step 5 | |
| Engine cranks normally but difficult to start | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Fuel pump | Refer to INSPECTION | |
| Engine coolant temperature sensor | Refer to INSPECTION | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector assembly | Refer to INSPECTION | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 9 | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| Throttle body | Refer to INSPECTION | |
| Incomplete intermittent combustion occurs (Does not start) | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Fuel pump | Refer to INSPECTION | |
| Fuel line | - | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector assembly | Refer to INSPECTION | |
| Crankshaft position sensor | Refer to INSPECTION | |
| Valve timing | Refer to PROCEDURE - Step 5 | |
| High engine speed (Poor idle) | Air conditioning signal circuit | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| Throttle body | Refer to INSPECTION | |
| Engine coolant temperature sensor | Refer to INSPECTION | |
| PCV system | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| PCV valve | Refer to INSPECTION | |
| ACIS control circuit | Refer to ACIS Control Circuit | |
| Low engine speed (Poor idle) | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Throttle body | Refer to INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| ACIS control circuit | Refer to ACIS Control Circuit | |
| PCV system | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| PCV valve | Refer to INSPECTION | |
| Engine stalls on deceleration | Idle speed (refer to "Low engine speed") | Refer to ON-VEHICLE INSPECTION - Step 8 |
| Rough idle | Compression (engine mechanical) | Refer to ON-VEHICLE INSPECTION - Step 9 |
| Air fuel ratio sensor | Refer to INSPECTION | |
| Heated oxygen sensor | Refer to INSPECTION | |
| Mass air flow meter | Refer to INSPECTION | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Air conditioning signal circuit | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Fuel line (blocked) | - | |
| Valve timing | Refer to PROCEDURE - Step 5 | |
| Fuel pump | Refer to INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| Tumble control valve | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| ACIS control circuit | Refer to ACIS Control Circuit | |
| PCV system | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| PCV valve | Refer to INSPECTION | |
| Hunting (Poor idle) | PCV system | Refer to ON-VEHICLE INSPECTION - Step 3 |
| PCV valve | Refer to INSPECTION | |
| Mass air flow meter | Refer to INSPECTION | |
| Air fuel ratio sensor | Refer to INSPECTION | |
| ACIS control circuit | Refer to ACIS Control Circuit | |
| Tumble control valve | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| Engine stalls during air conditioning operation | Air conditioning signal circuit | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| ECM | Refer to REMOVAL | |
| Hesitation/Poor acceleration (Poor driveability) | Fuel line | - |
| Fuel pump | Refer to INSPECTION | |
| Valve timing | Refer to PROCEDURE - Step 5 | |
| Mass air flow meter | Refer to INSPECTION | |
| Throttle body | Refer to INSPECTION | |
| Knock sensor | Refer to INSPECTION | |
| Surging (Poor driveability) | Fuel line | - |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Fuel pump | Refer to INSPECTION | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector assembly | Refer to INSPECTION | |
| Engine stalls soon after starting | Mass air flow meter | Refer to INSPECTION |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| Fuel line | - | |
| Unable/difficult to refuel | Refueling valve (canister) | Refer to INSPECTION |