Problem Symptoms Table
HINT:
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.
SFI SYSTEM
| Symptom | Suspected Area | See |
|---|---|---|
| w/o Smart Key System: Engine does not crank (Does not start) | 1. Battery | Refer to ON-VEHICLE INSPECTION - Step 1 |
| 2. VC output circuit (ECM 5 V output) | Refer to VC Output Circuit | |
| 3. Starter signal circuit | Refer to DTC P0617: Starter Relay Circuit High | |
| 4. Starter | Refer to INSPECTION | |
| 5. ST relay | Refer to ON-VEHICLE INSPECTION | |
| 6. ECM power source circuit | Refer to ECM Power Source Circuit | |
| 7. ECM | Refer to REMOVAL | |
| w/ Smart Key System: Engine does not crank (Does not start) | 1. Battery | Refer to ON-VEHICLE INSPECTION - Step 1 |
| 2. Smart key system | Refer to PROBLEM SYMPTOMS TABLE | |
| 3. VC output circuit (ECM 5 V output) | Refer to VC Output Circuit | |
| 4. Cranking holding function circuit | Refer to Cranking Holding Function Circuit | |
| 6. Starter | Refer to INSPECTION | |
| 7. ST relay | Refer to ON-VEHICLE INSPECTION | |
| 8. ECM power source circuit | Refer to ECM Power Source Circuit | |
| 9. ECM | Refer to REMOVAL | |
| No initial combustion (Does not start) | 1. Immobiliser system | Refer to PROBLEM SYMPTOMS TABLE |
| 2. ECM power source circuit | Refer to ECM Power Source Circuit | |
| 3. VC output circuit (ECM 5 V output) | Refer to VC Output Circuit | |
| 4. Ignition system | Refer to ON-VEHICLE INSPECTION | |
| 5. Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| 6. Injector | Refer to INSPECTION | |
| 7. Crankshaft position sensor | Refer to INSPECTION | |
| 8. ECM | Refer to REMOVAL | |
| Engine cranks normally but difficult to start | 1. Electronic Throttle Control System (ETCS) | Refer to ON-VEHICLE INSPECTION |
| 2. Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| 3. Ignition system | Refer to ON-VEHICLE INSPECTION | |
| 4. Spark plug | Refer to INSPECTION - Step 1 | |
| 5. Compression | Refer to ON-VEHICLE INSPECTION - Step 4 | |
| 6. Injector | Refer to INSPECTION | |
| 7. Crankshaft position sensor | Refer to INSPECTION | |
| Difficult to start with cold engine | 1. Starter signal circuit (w/o smart key system) | Refer to DTC P0617: Starter Relay Circuit High |
| 2. Cranking holding function circuit (w/ smart key system) | Refer to Cranking Holding Function Circuit | |
| 3. Electronic Throttle Control System (ETCS) | Refer to ON-VEHICLE INSPECTION | |
| 4. Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| 5. Spark plug | Refer to INSPECTION - Step 1 | |
| 6. Ignition system | Refer to ON-VEHICLE INSPECTION | |
| 7. Injector | Refer to INSPECTION | |
| 8. Engine coolant temperature sensor | Refer to INSPECTION | |
| Difficult to start with warm engine | 1. Starter signal circuit (w/o smart key system) | Refer to DTC P0617: Starter Relay Circuit High |
| 2. Cranking holding function circuit (w/ smart key system) | Refer to Cranking Holding Function Circuit | |
| 3. Electronic Throttle Control System (ETCS) | Refer to ON-VEHICLE INSPECTION | |
| 4. Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| 5. Spark plug | Refer to INSPECTION - Step 1 | |
| 6. Ignition system | Refer to ON-VEHICLE INSPECTION | |
| 7. Injector | Refer to INSPECTION | |
| 8. Engine coolant temperature sensor | Refer to INSPECTION | |
| High engine idling speed | 1. Electronic Throttle Control System (ETCS) | Refer to ON-VEHICLE INSPECTION |
| 2. ECM power source circuit | Refer to ECM Power Source Circuit | |
| 3. A/C signal circuit (Compressor circuit) | - | |
| 4. Acoustic Control Induction System (ACIS) | Refer to ACIS Control Circuit | |
| 5. PCV hose | Refer to ON-VEHICLE INSPECTION - Step 5 | |
| 6. ECM | Refer to REMOVAL | |
| Low engine idling speed (Poor idling) | 1. Electronic Throttle Control System (ETCS) | Refer to ON-VEHICLE INSPECTION |
| 2. ECM power source circuit | Refer to ECM Power Source Circuit | |
| 3. A/C signal circuit (Compressor circuit) | - | |
| 4. Acoustic Control Induction System (ACIS) | Refer to ACIS Control Circuit | |
| 5. PCV hose | Refer to ON-VEHICLE INSPECTION - Step 5 | |
| 6. Injector | Refer to INSPECTION | |
| 7. ECM | Refer to REMOVAL | |
| Rough idling (Poor idling) | 1. Electronic Throttle Control System (ETCS) | Refer to ON-VEHICLE INSPECTION |
| 2. Injector | Refer to INSPECTION | |
| 3. Ignition system | Refer to ON-VEHICLE INSPECTION | |
| 4. Compression | Refer to ON-VEHICLE INSPECTION - Step 4 | |
| 5. Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| 6. Spark plug | Refer to INSPECTION - Step 1 | |
| 7. Acoustic Control Induction System (ACIS) | Refer to ACIS Control Circuit | |
| 8. PCV hose | Refer to ON-VEHICLE INSPECTION - Step 5 | |
| Hunting (Poor idling) | 1. Electronic Throttle Control System (ETCS) | Refer to ON-VEHICLE INSPECTION |
| 2. ECM power source circuit | Refer to ECM Power Source Circuit | |
| 3. Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| 4. Spark plug | Refer to INSPECTION - Step 1 | |
| 5. Ignition system | Refer to ON-VEHICLE INSPECTION | |
| 6. Injector | Refer to INSPECTION | |
| 7. Acoustic Control Induction System (ACIS) | Refer to ACIS Control Circuit | |
| 8. PCV hose | Refer to ON-VEHICLE INSPECTION - Step 5 | |
| Hesitation/Poor acceleration (Poor driveability) | 1. Injector | Refer to INSPECTION |
| 2. Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| 3. Ignition system | Refer to ON-VEHICLE INSPECTION | |
| 4. Spark plug | Refer to INSPECTION - Step 1 | |
| 5. Air Intake Control System (AICS) | Refer to Air Intake Control Circuit | |
| 6. A/T faulty | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| 7. Brake override system | Refer to Brake Override System | |
| Surging (Poor driveability) | 1. Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| 2. Spark plug | Refer to INSPECTION - Step 1 | |
| 3. Ignition system | Refer to ON-VEHICLE INSPECTION | |
| 4. Injector | Refer to INSPECTION | |
| Engine stalls soon after starting | 1. Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| 2. Electronic Throttle Control System (ETCS) | Refer to ON-VEHICLE INSPECTION | |
| 3. Crankshaft position sensor | Refer to INSPECTION | |
| 4. Spark plug | Refer to INSPECTION - Step 1 | |
| 5. Ignition system | Refer to ON-VEHICLE INSPECTION | |
| 6. Injector | Refer to INSPECTION | |
| Engine stalls during A/C operation | 1. A/C signal circuit | - |
| 2. ECM | Refer to REMOVAL | |
| Unable/difficult to refuel | Fuel system (canister, refueling valve, roll-over valve, fuel tank, etc.) | - |
| Engine vibrates frequently when idling (Active Control engine Mount (ACM) system does not operate) | Active control engine mount circuit | Refer to Active Control Engine Mount System |