Engine. Lexus Gs430, Gs300. Uzs190 Grs190
3Gr-Fse Engine Control System. Lexus Gs430, Gs300. Uzs190 Grs190
Sfi System -- Problem Symptoms Table |
Use the table below to help determine the cause of the problem symptom. The potential cases 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.
| Symptom | Suspected area | See page |
| Engine does not crank (Does not start) | Immobiliser system | Click here |
| Starter | Click here | |
| Starter relay | Click here | |
| Park/neutral position switch | - | |
| No initial combustion (Does not start) | ECM power source circuit | Click here |
| Fuel pump control circuit | Click here | |
| ECM | Click here | |
| Engine cranks normally but difficult to start | Fuel pump control circuit | Click here |
| Compression | Click here | |
| Difficult to start with cold engine | Cranking holding function circuit | Click here |
| Ignition system | Click here | |
| Spark plug | Click here | |
| Fuel pump control circuit | Click here | |
| Injector | Click here | |
| Difficult to start with warm engine | Cranking holding function circuit | Click here |
| Injector | Click here | |
| Ignition system | Click here | |
| Spark plug | Click here | |
| Fuel pump control circuit | Click here | |
| High engine idle speed (Poor idling) | ECM power source circuit | Click here |
| A/C signal circuit (compressor circuit) | Click here | |
| Electronic throttle control system | Click here | |
| Air induction system | Click here | |
| PCV hose | - | |
| Low engine idle speed (Poor idling) | A/C signal circuit (compressor circuit) | Click here |
| Fuel pump control circuit | Click here | |
| Electronic throttle control system | Click here | |
| Air induction system | Click here | |
| PCV hose | - | |
| Rough idling (Poor idling) | Compression | Click here |
| Fuel pump control circuit | Click here | |
| Electronic throttle control system | Click here | |
| Air induction system | Click here | |
| PCV hose | - | |
| Hunting (Poor idling) | ECM power source circuit | Click here |
| Fuel pump control circuit | Click here | |
| Spark plug | Click here | |
| Ignition system | Click here | |
| Injector | Click here | |
| Electronic throttle control system | Click here | |
| Air induction system | Click here | |
| PCV hose | - | |
| Hesitation/ Poor acceleration (Poor driveability) | Fuel pump control circuit | Click here |
| Spark plug | Click here | |
| Ignition system | Click here | |
| Injector | Click here | |
| Surging (Poor driveability) | Spark plug | Click here |
| Fuel pump control circuit | Click here | |
| Ignition system | Click here | |
| Injector | Click here | |
| Engine stalls soon after starting | Fuel pump control circuit | Click here |
| Spark plug | Click here | |
| Ignition system | Click here | |
| Injector | Click here | |
| Vacuum sensor circuit | - | |
| Engine stalls during A/C operation | A/C signal circuit (Compressor circuit) | Click here |
| ECM | Click here |