SFI SYSTEM (w/ Electronic Throttle Control System) PROBLEM SYMPTOMS TABLE
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 srart) | 1. Starter signal circuit | |
| 2. Starter (for standard) | ||
| (for cold area) | ||
| 3. ST relay | ||
| No initial combustion (Does not start) | 1. ECM power source circuit | |
| 2. Fuel pump control circuit | ||
| 3. ECM | - | |
| Incomplete combustion (Does not start) | 1. Fuel pump control circuit | |
| Engine cranks normally but difficult to start | 1. Starter signal circuit | |
| 2. Fuel pump control circuit | ||
| 3. Compression | ||
| Difficult to start with cold engine | 1. Starter signal circuit | |
| 2. Fuel pump control circuit | ||
| Difficult to start with hot engine | 1. Starter signal circuit | |
| 2. Fuel pump control circuit | ||
| High engine idling speed (Poor idling) | 1. A/C signal circuit (Compressor circuit) | |
| 2. ECM power source circuit | ||
| Low engine idling speed (Poor idling) | 1. A/C signal circuit (Compressor circuit) | |
| 2. ECM power source circuit | ||
| Rough idling (Poor idling) | 1. Compression | |
| 2. Fuel pump control circuit | ||
| Hunting (Poor idling) | 1. ECM power source circuit | |
| 2. Fuel pump control circuit | ||
| Hesitation/Poor acceleration (Poor driveability) | 1. Fuel pump control circuit | |
| Surging (Poor driveability) | 1. Fuel pump control circuit | |
| Engine stalls soon after starting | 1. Fuel pump control circuit | |
| Engine stalls during A/C operation | 1. A/C signal circuit (Compressor circuit) | |
| 2. ECM | - |