Problem Symptoms Table
HINT:
Use the table below to help determine the cause of problem symptom. If multiple suspected areas 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.
SFI SYSTEM
| Symptom | Suspected Area | Refer To |
|---|---|---|
| Engine does not crank (Does not start) | Immobilizer system | Refer to PROBLEM SYMPTOMS TABLE |
| Battery | Refer to ON-VEHICLE INSPECTION | |
| VC output circuit | Refer to VC Output Circuit | |
| Starter signal circuit | Refer to Starter Signal Circuit | |
| Starter | Refer to INSPECTION | |
| No initial combustion (Does not start) | ECM power source circuit | Refer to ECM Power Source Circuit |
| Crankshaft position sensor | Refer to INSPECTION | |
| Camshaft position sensor | Refer to INSPECTION | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Fuel injector circuit | Refer to Fuel Injector Circuit | |
| Valve timing | Refer to PROCEDURE - Step 5 | |
| VC output circuit | Refer to VC Output Circuit | |
| Starter signal circuit | Refer to Starter Signal Circuit | |
| ECM | Refer to REMOVAL | |
| Engine cranks normally but difficult to start | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Fuel pump | Refer to INSPECTION | |
| Fuel injector circuit | Refer to Fuel Injector 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 3 | |
| Throttle body | Refer to ON-VEHICLE INSPECTION | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 9 | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Incomplete intermittent combustion occurs (Does not start) | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Fuel pump | Refer to INSPECTION | |
| Ignition circuit | Refer to SYSTEM DIAGRAM | |
| 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 | |
| Crankshaft position sensor | Refer to INSPECTION | |
| Camshaft position sensor | Refer to INSPECTION | |
| Valve timing | Refer to PROCEDURE - Step 5 | |
| High engine idle speed | Throttle body | Refer to ON-VEHICLE INSPECTION |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| A/C signal circuit | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Engine coolant temperature sensor | Refer to INSPECTION | |
| PCV valve and hose | Refer to INSPECTION | |
| Low engine idle speed (Poor idling) | Throttle body | Refer to ON-VEHICLE INSPECTION |
| A/C signal circuit | Refer to HOW TO PROCEED WITH TROUBLESHOOTING | |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Fuel pump | Refer to INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| PCV valve and hose | Refer to INSPECTION | |
| Rough idling | Compression | Refer to ON-VEHICLE INSPECTION - Step 9 |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| 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 pump | Refer to INSPECTION | |
| Throttle body | Refer to ON-VEHICLE INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| PCV valve and hose | Refer to INSPECTION | |
| Air fuel ratio sensor | Refer to INSPECTION | |
| Heated oxygen sensor | Refer to INSPECTION | |
| Mass air flow meter | Refer to ON-VEHICLE INSPECTION | |
| Idle hunting | Throttle body | Refer to ON-VEHICLE INSPECTION |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| PCV valve and hose | Refer to INSPECTION | |
| Air fuel ratio sensor | Refer to INSPECTION | |
| Mass air flow meter | Refer to ON-VEHICLE INSPECTION | |
| Hesitation/Poor acceleration | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Fuel pump | Refer to INSPECTION | |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| 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 body | Refer to ON-VEHICLE INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| Valve timing | Refer to PROCEDURE - Step 5 | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 9 | |
| Brake override system | Refer to Brake Override System | |
| Surging (Poor driveability) | Spark plug | Refer to ON-VEHICLE INSPECTION - Step 3 |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Fuel pump | Refer to INSPECTION | |
| 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 DTC P0010: Camshaft Position "A" Actuator Circuit (Bank 1) | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 9 | |
| Engine stalls soon after starting | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Fuel pump | Refer to INSPECTION | |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| 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 DTC P0010: Camshaft Position "A" Actuator Circuit (Bank 1) | |
| Throttle body | Refer to ON-VEHICLE INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| PCV valve and hose | Refer to INSPECTION | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 9 | |
| Engine stalls only during A/C operation | A/C signal circuit | Refer to HOW TO PROCEED WITH TROUBLESHOOTING |
| ECM | Refer to REMOVAL | |
| Unable/difficult to refuel | Fuel system (canister, refueling valve, roll over valve, fuel tank, etc.) | - |