SFI SYSTEM (w/o Secondary Air Injection System) PROBLEM SYMPTOMS TABLE
Tech Tips
When a malfunction is not confirmed by a DTC (Diagnostic Trouble Code) check and the cause of problem cannot be identified through a basic inspection, troubleshoot according to the priority order indicated in the table below.
| Symptom | Suspected Area | See page |
|---|---|---|
| Engine does not crank (Does not start) | Starter | |
| STARTER relay | ||
| No initial combustion (Does not start) | ECM power source circuit | |
| Fuel pump control circuit | ||
| ECM | ||
| Engine cranks normally but difficult to start | Fuel pump control circuit | |
| Compression | ||
| Difficult to start with cold engine | Starter signal circuit | |
| Fuel pump control circuit | ||
| Spark plug | ||
| Ignition system | ||
| Fuel injector | ||
| Difficult to start with warm engine | Starter signal circuit | |
| Fuel pump control circuit | ||
| Spark plug | ||
| Ignition system | ||
| Fuel injector | ||
| High engine idling speed (Poor idling) | A/C signal circuit (compressor circuit) | - |
| ECM power source circuit | ||
| Electronic throttle control system | ||
| PCV hose | - | |
| Low engine idling speed (Poor idling) | A/C signal circuit (compressor circuit) | - |
| Fuel pump control circuit | ||
| Electronic throttle control system | ||
| PCV hose | - | |
| Rough idling (Poor idling) | Compression | |
| Fuel pump control circuit | ||
| Electronic throttle control system | ||
| PCV hose | - | |
| Hunting (Poor idling) | ECM power source circuit | |
| Fuel pump control circuit | ||
| Spark plug | ||
| Ignition system | ||
| Fuel injector | ||
| Electronic throttle control system | ||
| PCV hose | - | |
| Hesitation/Poor acceleration (Poor driveability) | Fuel pump control circuit | |
| A/T faulty* | ||
| Spark plug | ||
| Ignition system | ||
| Fuel injector | ||
| Brake override system | ||
| Surging (Poor driveability) | Fuel pump control circuit | |
| Spark plug | ||
| Ignition system | ||
| Fuel injector | ||
| Engine stalls soon after starting | Fuel pump control circuit | |
| Spark plug | ||
| Ignition system | ||
| Fuel injector | ||
| Engine stall during A/C operation | A/C signal circuit (Compressor circuit) | - |
| ECM |