Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes 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.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
SFI SYSTEM
| Symptom | Suspected Area | See |
|---|---|---|
| Engine does not crank (Does not start) | Battery | Refer to ON-VEHICLE INSPECTION |
| Starter assembly | Refer to INSPECTION | |
| Starter relay | Refer to ON-VEHICLE INSPECTION | |
| Starter signal circuit | Refer to Starter Signal Circuit | |
| Smart key system (for start function) | Refer to PROBLEM SYMPTOMS TABLE | |
| Park/neutral position switch assembly (for 2WD) | Refer to INSPECTION | |
| Park/neutral position switch assembly (for AWD) | Refer to INSPECTION | |
| VC output circuit (w/ smart key system) | Refer to VC Output Circuit | |
| No initial combustion (Does not start) | ECM power source circuit | Refer to ECM Power Source Circuit |
| VC output circuit (w/o smart key system) | Refer to VC Output Circuit | |
| Crankshaft position sensor | Refer to INSPECTION | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Fuel suction with pump and gauge tube assembly | Refer to INSPECTION | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| Valve timing | Refer to INSTALLATION - Step 17 | |
| VVT sensor (for intake side of bank1, 2) | Refer to INSPECTION PROCEDURE | |
| VVT sensor (for exhaust side of bank1, 2) | Refer to INSPECTION PROCEDURE | |
| Cranking holding function circuit | Refer to Cranking Holding Function Circuit | |
| Starter signal circuit | Refer to Starter Signal Circuit | |
| Engine immobilizer system (w/ smart key system) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Engine immobilizer system (w/o smart key system) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| ECM | Refer to TERMINALS OF ECM | |
| Engine cranks normally but difficult to start | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Fuel suction with pump and gauge tube assembly | Refer to INSPECTION | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Cranking holding function circuit | Refer to Cranking Holding Function Circuit | |
| Starter signal circuit | Refer to Starter Signal Circuit | |
| Engine coolant temperature sensor | Refer to INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| Fuel injector assembly | Refer to INSPECTION | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 11 | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| Throttle with motor body assembly | Refer to ON-VEHICLE INSPECTION | |
| Incomplete intermittent combustion occurs(Does not start) | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Fuel suction with pump and gauge tube assembly | Refer to INSPECTION | |
| Fuel line | Refer to ON-VEHICLE INSPECTION | |
| Ignition circuit | Refer to DTC P0351: Ignition Coil "A" Primary / Secondary Circuit; DTC P0352: Ignition Coil "B" Primary / Secondary Circuit; DTC P0353: Ignition Coil "C" Primary / Secondary Circuit; DTC P0354: Ignition Coil "D" Primary / Secondary Circuit; DTC P0355: Ignition Coil "E" Primary / Secondary Circuit; DTC P0356: Ignition Coil "F" Primary / Secondary Circuit | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| Fuel injector assembly | Refer to INSPECTION | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Cranking holding function circuit | Refer to Cranking Holding Function Circuit | |
| Starter signal circuit | Refer to Starter Signal Circuit | |
| Crankshaft position sensor | Refer to INSPECTION | |
| VVT sensor (for intake side of bank1, 2) | Refer to INSPECTION PROCEDURE | |
| VVT sensor (for exhaust side of bank1, 2) | Refer to INSPECTION PROCEDURE | |
| Engine immobilizer system (w/ smart key system) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Engine immobilizer system (w/o smart key system) | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Valve timing | Refer to INSTALLATION - Step 17 | |
| High engine speed (Poor idle) |
Throttle with motor body assembly | Refer to ON-VEHICLE INSPECTION |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| A/C signal circuit for automatic air conditioning system | Refer to PROBLEM SYMPTOMS TABLE | |
| A/C signal circuit for manual air conditioning system | Refer to PROBLEM SYMPTOMS TABLE | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Engine coolant temperature sensor | Refer to INSPECTION | |
| PCV valve and hose | Refer to COMPONENTS | |
| ACIS control circuit | Refer to ACIS Control Circuit | |
| Low engine speed (Poor idle) |
Throttle with motor body assembly | Refer to ON-VEHICLE INSPECTION |
| A/C signal circuit for automatic air conditioning system | Refer to PROBLEM SYMPTOMS TABLE | |
| A/C signal circuit for manual air conditioning system | Refer to PROBLEM SYMPTOMS TABLE | |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Fuel suction with pump and gauge tube assembly | Refer to INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| PCV valve and hose | Refer to COMPONENTS | |
| ACIS control circuit | Refer to ACIS Control Circuit | |
| Engine stalls on deceleration | Idle speed (refer to "Low engine speed") | Refer to ON-VEHICLE INSPECTION - Step 10 |
| Rough idle | Compression | Refer to ON-VEHICLE INSPECTION - Step 11 |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Fuel suction with pump and gauge tube assembly | Refer to INSPECTION | |
| Fuel line | Refer to ON-VEHICLE INSPECTION | |
| Throttle with motor body assembly | Refer to ON-VEHICLE INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| PCV valve and hose | Refer to COMPONENTS | |
| Air fuel ratio sensor | Refer to INSPECTION | |
| Heated oxygen sensor | Refer to INSPECTION | |
| Mass air flow meter | Refer to ON-VEHICLE INSPECTION | |
| Knock sensor | Refer to INSPECTION | |
| ACIS control circuit | Refer to ACIS Control Circuit | |
| External part malfunction (Increase in load: A/C system, CVT system, etc.) | - | |
| Hunting (Poor idling) | Throttle with motor body assembly | Refer to ON-VEHICLE INSPECTION |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| PCV valve and hose | Refer to COMPONENTS | |
| Air fuel ratio sensor | Refer to INSPECTION | |
| Mass air flow meter | Refer to ON-VEHICLE INSPECTION | |
| ACIS control circuit | Refer to ACIS Control Circuit | |
| Hesitation/Poor acceleration | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Fuel suction with pump and gauge tube assembly | Refer to INSPECTION | |
| Fuel line | Refer to ON-VEHICLE INSPECTION | |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Mass air flow meter | Refer to ON-VEHICLE INSPECTION | |
| Throttle with motor body assembly | Refer to ON-VEHICLE INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| Valve timing | Refer to INSTALLATION - Step 17 | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 11 | |
| Brake override system | Refer to Brake Override System | |
| Surging (Poor driveability) | Spark plug | Refer to ON-VEHICLE INSPECTION - Step 2 |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Fuel suction with pump and gauge tube assembly | Refer to INSPECTION | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| Fuel injector assembly | Refer to INSPECTION | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Mass air flow meter | Refer to ON-VEHICLE INSPECTION | |
| Variable Valve Timing (VVT) system | Refer to ON-VEHICLE INSPECTION | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 11 | |
| Engine stalls soon after starting | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Fuel suction with pump and gauge tube assembly | Refer to INSPECTION | |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Mass air flow meter | Refer to ON-VEHICLE INSPECTION | |
| Variable Valve Timing (VVT) system | Refer to ON-VEHICLE INSPECTION | |
| Throttle with motor body assembly | Refer to ON-VEHICLE INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| PCV valve and hose | Refer to COMPONENTS | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 11 | |
| Engine stalls only during A/C operation | A/C signal circuit for automatic air conditioning system | Refer to PROBLEM SYMPTOMS TABLE |
| A/C signal circuit for manual air conditioning system | Refer to PROBLEM SYMPTOMS TABLE | |
| ECM | Refer to TERMINALS OF ECM | |
| Engine vibrates frequently when idling (Active control engine mount system) |
Active control engine mount system | Refer to Active Control Engine Mount System |
| Unable/difficult to refuel | Fuel system (canister, rollover valve, fuel tank etc.) | - |