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 | See |
|---|---|---|
| Engine does not crank (Does not start) | Battery | Refer to ON-VEHICLE INSPECTION - Step 1 |
| Starter Assembly | Refer to INSPECTION | |
| Smart key system (for start function) (w/ smart key system) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Park/neutral position switch assembly | Refer to INSPECTION | |
| VC output circuit (ECM 5 V circuit) | Refer to VC Output Circuit | |
| Starter signal circuit | Refer to Starter Signal Circuit | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| No initial combustion (Does not start) | Engine immobilizer system (w/ smart key system) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| Engine immobilizer system (w/o smart key system) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| VC output circuit (ECM 5 V output) | Refer to VC Output Circuit | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Crankshaft position sensor | Refer to INSPECTION | |
| Camshaft position sensor (for intake camshaft) | Refer to DTC P0340: Camshaft Position Sensor Circuit Malfunction; DTC P0342: Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor); DTC P0343: Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor) | |
| Camshaft position sensor (for exhaust camshaft) | Refer to DTC P0365: Camshaft Position Sensor "B" Circuit (Bank 1); DTC P0367: Camshaft Position Sensor "B" Circuit Low Input (Bank 1); DTC P0368: Camshaft Position Sensor "B" Circuit High Input (Bank 1) | |
| Valve timing | Refer to PROCEDURE - Step 4 | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| Starter signal circuit | Refer to Starter Signal Circuit | |
| Engine cranks normally but difficult to start | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Engine coolant temperature sensor | Refer to INSPECTION | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 9 | |
| Fuel injector assembly | Refer to INSPECTION | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| Throttle with motor body assembly | Refer to INSPECTION | |
| PCV valve and hose | Refer to COMPONENTS | |
| Starter signal circuit | Refer to Starter Signal Circuit | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| 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 circuit | Refer to Fuel Injector Circuit | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Starter signal circuit | Refer to Starter Signal Circuit | |
| Crankshaft position sensor | Refer to INSPECTION | |
| Camshaft position sensor (for intake camshaft) | Refer to DTC P0340: Camshaft Position Sensor Circuit Malfunction; DTC P0342: Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor); DTC P0343: Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor) | |
| Camshaft position sensor (for exhaust camshaft) | Refer to DTC P0365: Camshaft Position Sensor "B" Circuit (Bank 1); DTC P0367: Camshaft Position Sensor "B" Circuit Low Input (Bank 1); DTC P0368: Camshaft Position Sensor "B" Circuit High Input (Bank 1) | |
| Valve timing | Refer to PROCEDURE - Step 4 | |
| High engine speed | Throttle with motor body assembly | Refer to INSPECTION |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| A/C signal circuit (for automatic air conditioning system) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| A/C signal circuit (for manual air conditioning system) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Engine coolant temperature sensor | Refer to INSPECTION | |
| PCV valve and hose | Refer to COMPONENTS | |
| Low engine speed (Poor idle) | Throttle with motor body assembly | Refer to INSPECTION |
| A/C signal circuit (for automatic air conditioning system) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| A/C signal circuit (for manual air conditioning system) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Fuel pump | Refer to INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| PCV valve and hose | Refer to COMPONENTS | |
| Rough idle | Compression | Refer to ON-VEHICLE INSPECTION - Step 9 |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Fuel pump | Refer to INSPECTION | |
| Fuel line | - | |
| Throttle with motor body assembly | Refer to INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| Purge VSV | Refer to INSPECTION | |
| PCV valve and hose | Refer to COMPONENTS | |
| Air fuel ratio sensor | Refer to INSPECTION | |
| Heated oxygen sensor | Refer to INSPECTION | |
| Mass air flow meter sub-assembly | Refer to INSPECTION | |
| Knock control sensor | Refer to INSPECTION | |
| External part malfunction (Increase in load: A/C system, etc.) | - | |
| Hunting (Poor idle) | Electronic throttle control system | Refer to ON-VEHICLE INSPECTION |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| ACIS control circuit | Refer to ACIS Control Circuit | |
| Intake air control valve actuator (for tumble control valve) | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| Hesitation and/or poor acceleration (Poor driveability) | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector assembly | Refer to INSPECTION | |
| Mass air flow meter sub-assembly | Refer to INSPECTION | |
| Electronic throttle control system | Refer to ON-VEHICLE INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 9 | |
| Brake override system | Refer to Brake Override System | |
| Surging (Poor driveability) | Spark plug | Refer to ON-VEHICLE INSPECTION - Step 3 |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector assembly | Refer to INSPECTION | |
| Mass air flow meter sub-assembly | Refer to INSPECTION | |
| Variable Valve Timing (VVT) system | Refer to DTC P0016: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A); DTC P0017: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B) | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 9 | |
| Engine stalls soon after starting | Engine immobilizer system (w/ smart key system) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| Engine immobilizer system (w/o smart key system) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector assembly | Refer to INSPECTION | |
| Variable Valve Timing (VVT) system | Refer to DTC P0016: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A); DTC P0017: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B) | |
| Electronic throttle control system | Refer to ON-VEHICLE INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| PCV valve and hose | Refer to COMPONENTS | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 9 | |
| Engine stalls only during A/C operation | A/C signal circuit (for automatic air conditioning system) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| A/C signal circuit (for manual air conditioning system) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| ECM | Refer to TERMINALS OF ECM | |
| Engine stalls when starting off | Automatic transaxle system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| Unable/difficult to refuel | Fuel system (canister, fuel tank etc.) | - |