Problem Symptoms Table
When the malfunction is not confirmed in the diagnostic trouble code check and the problem still can not be confirmed in the basic inspection, use this table and troubleshoot according to the priority order given below.
SFI SYSTEM
PROBLEM SYMPTOMS CHART
| Symptom | Suspected area |
|---|---|
| Engine does not crank (Does not start) | 1. Immobilizer System. See ENGINE IMMOBILIZER |
| 2. Generator | |
| 3. Hybrid system. See HYBRID VEHICLE CONTROL (P310) | |
| 4. Park/neutral position switch | |
| No initial combustion (Does not start) | 1. ECM (Included in HV Control ECU) power source circuit. See ECM POWER SOURCE CIRCUIT |
| 2. FUEL PUMP CONTROL CIRCUIT | |
| 3. ECM (Included in HV Control ECU) | |
| Engine cranks normally but difficult to start | 1. FUEL PUMP CONTROL CIRCUIT |
| 2. Compression. See ENGINE | |
| Difficult to start with cold engine | 1. Ignition system. See IGNITION SYSTEM |
| 2. Spark plug. See IGNITION SYSTEM | |
| 3. FUEL PUMP CONTROL CIRCUIT | |
| 5. Injector. See FUEL INJECTOR | |
| Difficult to start with warm engine | 1. Injector. See FUEL INJECTOR |
| 2. Ignition system. See IGNITION SYSTEM | |
| 3. Spark plug. See IGNITION SYSTEM | |
| 4. FUEL PUMP CONTROL CIRCUIT | |
| High engine idle speed (Poor idling) | 1. ECM (Included in HV Control ECU) power source circuit |
| 2. A/C signal circuit (compressor circuit) | |
| 3. Electronic throttle control system | |
| 4. Air induction system | |
| 5. PCV hose | |
| Low engine idle speed (Poor idling) | 1. A/C signal circuit (compressor circuit) |
| 2. FUEL PUMP CONTROL CIRCUIT | |
| 3. Electronic throttle control system | |
| 4. Air induction system | |
| 5. PCV hose | |
| Rough idling (Poor idling) | 1. Compression. See ENGINE |
| 2. FUEL PUMP CONTROL CIRCUIT | |
| 3. Electronic throttle control system | |
| 4. Air induction system | |
| 5. PCV hose | |
| Hunting (Poor idling) | 1. ECM (Included in HV Control ECU) power source circuit |
| 2. FUEL PUMP CONTROL CIRCUIT | |
| 3. Spark plug. See IGNITION SYSTEM | |
| 4. Ignition system. See IGNITION SYSTEM | |
| 5. Injector. See FUEL INJECTOR | |
| 6. Electronic throttle control system | |
| 7. Air induction system | |
| 8. PCV hose | |
| Hesitation/ Poor acceleration (Poor driveability) | 1. FUEL PUMP CONTROL CIRCUIT |
| 2. Spark plug. See IGNITION SYSTEM | |
| 3. Ignition system. See IGNITION SYSTEM | |
| 4. Injector. See FUEL INJECTOR | |
| Surging (Poor driveability) | 1. Spark plug. See IGNITION SYSTEM |
| 2. FUEL PUMP CONTROL CIRCUIT | |
| 3. Ignition system. See IGNITION SYSTEM | |
| 4. Injector. See FUEL INJECTOR | |
| Engine stalls soon after starting | 1. FUEL PUMP CONTROL CIRCUIT |
| 2. Spark plug. See IGNITION SYSTEM | |
| 3. Ignition system. See IGNITION SYSTEM | |
| 4. Injector. See FUEL INJECTOR | |
| Engine stalls during A/C operation | 1. A/C signal circuit (Compressor circuit) |
| 2. ECM (Included in HV Control ECU) | |
| Unable/difficult refuel | Refueling valve (canister) |