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 | Refer To |
|---|---|---|
| Engine does not crank (Does not start) | Immobiliser system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| Starter | Refer to INSPECTION | |
| No initial combustion (Does not start) | ECM power source circuit | Refer to ECM Power Source Circuit |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| VC output circuit | Refer to VC Output Circuit | |
| ECM | Refer to TERMINALS OF ECM | |
| Engine cranks normally but difficult to start | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 11 | |
| Difficult to start with cold engine | Starter signal circuit | Refer to Starter Signal Circuit |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector assembly | Refer to INSPECTION | |
| Difficult to start with warm engine | Starter signal circuit | Refer to Starter Signal Circuit |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector assembly | Refer to INSPECTION | |
| High engine idling speed (Poor idling) | A/C signal circuit (compressor circuit) (for Automatic Air) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| A/C signal circuit (compressor circuit) (for Manual Air) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Electronic throttle control system | Refer to ON-VEHICLE INSPECTION | |
| Air induction system | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| PCV hose | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| Low engine idling speed (Poor idling) | A/C signal circuit (compressor circuit) (for Automatic Air) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| A/C signal circuit (compressor circuit) (for Manual Air) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Electronic throttle control system | Refer to ON-VEHICLE INSPECTION | |
| Air induction system | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| PCV hose | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| Rough idling (Poor idling) | Compression | Refer to ON-VEHICLE INSPECTION - Step 11 |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| Electronic throttle control system | Refer to ON-VEHICLE INSPECTION | |
| Air induction system | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| PCV hose | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| Mass air flow meter | Refer to ON-VEHICLE INSPECTION | |
| Hunting (Poor idling) | ECM power source circuit | Refer to ECM Power Source Circuit |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| Fuel injector assembly | Refer to INSPECTION | |
| Electronic throttle control system | Refer to ON-VEHICLE INSPECTION | |
| Air induction system | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| PCV hose | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| Hesitation/Poor acceleration (Poor driveability) | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| A/T faulty | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| Fuel injector assembly | Refer to INSPECTION | |
| Mass air flow meter | Refer to ON-VEHICLE INSPECTION | |
| Surging (Poor driveability) | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| Fuel injector assembly | Refer to INSPECTION | |
| Mass air flow meter | Refer to ON-VEHICLE INSPECTION | |
| Engine stalls soon after starting | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| Fuel injector assembly | Refer to INSPECTION | |
| Engine stalls during A/C operation | A/C signal circuit (compressor circuit) (for Automatic Air) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| A/C signal circuit (compressor circuit) (for Manual Air) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| ECM | Refer to TERMINALS OF ECM |