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 | Reference |
|---|---|---|
| Engine does not crank (Does not start) | Battery | Refer to GENERAL MAINTENANCE - Step 6 |
| Immobilizer system | Refer to PROBLEM SYMPTOMS TABLE | |
| Cranking holding function circuit | Refer to Cranking Holding Function Circuit | |
| Starter | Refer to INSPECTION | |
| Clutch pedal switch | Refer to INSPECTION | |
| No initial combustion (Does not start) | ECM power source circuit | Refer to ECM Power Source Circuit |
| Camshaft position sensor (for intake camshaft) | Refer to COMPONENTS | |
| Camshaft position sensor (for exhaust camshaft) | Refer to COMPONENTS | |
| VC output circuit | 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 REMOVAL | |
| ECM | Refer to REMOVAL | |
| 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 | |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| Injector | Refer to INSPECTION | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 10 | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| 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 | |
| Ignition circuit | Refer to WIRING DIAGRAM | |
| 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 | |
| Crankshaft position sensor | Refer to INSPECTION | |
| Camshaft position sensor (for intake camshaft) | Refer to COMPONENTS | |
| Camshaft position sensor (for exhaust camshaft) | Refer to COMPONENTS | |
| Valve timing | Refer to REMOVAL | |
| High engine idle speed | A/C signal circuit (for manual air conditioning system) | Refer to PROBLEM SYMPTOMS TABLE |
| Throttle body | Refer to ON-VEHICLE INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| Engine coolant temperature sensor | Refer to INSPECTION | |
| PCV valve and hose | Refer to COMPONENTS | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Low engine idle speed (Poor idle) | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Fuel pump | Refer to INSPECTION | |
| Throttle body | Refer to ON-VEHICLE INSPECTION | |
| A/C signal circuit (for manual air conditioning system) | Refer to PROBLEM SYMPTOMS TABLE | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| PCV valve and hose | Refer to COMPONENTS | |
| Rough idle | Compression | Refer to ON-VEHICLE INSPECTION - Step 10 |
| Air fuel ratio sensor | Refer to INSPECTION | |
| Heated oxygen sensor | Refer to INSPECTION | |
| Mass air flow meter | Refer to INSPECTION | |
| Ignition system | Refer to DTC P0351, P0352, P0353, P0354: Ignition Coil "A" Primary/Secondary Circuit; Ignition Coil "B" Primary/Secondary Circuit; Ignition Coil "C" Primary/Secondary Circuit; Ignition Coil "D" Primary/Secondary Circuit | |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 5 | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| Throttle body | Refer to ON-VEHICLE INSPECTION | |
| PCV valve and hose | Refer to COMPONENTS | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Fuel pump | Refer to INSPECTION | |
| Idle hunting | Throttle body | Refer to INSPECTION |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| PCV valve and hose | Refer to COMPONENTS | |
| Air fuel ratio sensor | Refer to INSPECTION | |
| Mass air flow meter | Refer to ON-VEHICLE INSPECTION | |
| Hesitation/Poor acceleration | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Fuel pump | Refer to INSPECTION | |
| Spark plug | Refer to COMPONENTS | |
| 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 | |
| Mass air flow meter | Refer to ON-VEHICLE INSPECTION | |
| Throttle body | Refer to ON-VEHICLE INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| Valve timing | Refer to DISASSEMBLY | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 10 | |
| Surging (Poor driveability) | Spark plug | Refer to ON-VEHICLE INSPECTION - Step 5 |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Fuel pump | Refer to INSPECTION | |
| 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 | |
| Mass air flow meter | Refer to ON-VEHICLE INSPECTION | |
| Variable valve timing (VVT) system | Refer to DTC P0011, P0012: Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1); Camshaft Position "A" - Timing Over-Retarded (Bank 1) | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 10 | |
| Engine stalls soon after starting | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Fuel pump | Refer to INSPECTION | |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| 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 | |
| Mass air flow meter | Refer to ON-VEHICLE INSPECTION | |
| Variable valve timing (VVT) system | Refer to DTC P0011, P0012: Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1); Camshaft Position "A" - Timing Over-Retarded (Bank 1) | |
| Throttle body | 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 10 | |
| Engine stalls only during A/C operation | A/C signal circuit (for manual air conditioning system) | Refer to PROBLEM SYMPTOMS TABLE |
| ECM | Refer to REMOVAL | |
| Unable/difficult to refuel | Refueling valve (canister) | Refer to EVAP System |