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 | Refer To |
|---|---|---|
| Engine does not crank (Does not start) | Battery | Refer to ON-VEHICLE INSPECTION - Step 1 |
| Starter | Refer to INSPECTION | |
| Starter relay | Refer to ON-VEHICLE INSPECTION | |
| Park/neutral position switch assembly | Refer to INSPECTION | |
| VC output circuit (ECM 5 V output) | Refer to VC Output Circuit | |
| Starter signal circuit | Refer to Starter Signal Circuit | |
| No initial combustion (Does not start) | ECM power source circuit | Refer to ECM Power Source 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 injector circuit | Refer to Fuel Injector Circuit | |
| Valve timing | Refer to PROCEDURE - Step 5 | |
| VC output circuit (ECM 5 V output) | Refer to VC Output Circuit | |
| Camshaft position sensor | Refer to REMOVAL | |
| 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 | |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Engine coolant temperature sensor | Refer to REMOVAL | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| Ignition system | Refer to ON-VEHICLE INSPECTION | |
| Spark plug | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| Throttle body | Refer to INSPECTION | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 9 | |
| 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 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 | |
| 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 | |
| Valve timing | Refer to PROCEDURE - Step 5 | |
| Camshaft position sensor | Refer to REMOVAL | |
| High engine idle speed | Throttle body | Refer to 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 REMOVAL | |
| PCV valve and hose | Refer to INSPECTION | |
| Acoustic Control Induction System (ACIS) | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| Low engine idle speed (Poor idling) | Throttle body | Refer to 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 pump | Refer to INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| PCV valve and hose | Refer to INSPECTION | |
| Acoustic Control Induction System (ACIS) | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| 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 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 pump | Refer to INSPECTION | |
| Throttle body | Refer to 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 | |
| Acoustic Control Induction System (ACIS) | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| Tumble Control Valve (TCV) | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| Idle hunting | Throttle body | Refer to 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 | |
| Acoustic Control Induction System (ACIS) | Refer to ON-VEHICLE INSPECTION - Step 2 | |
| Tumble Control Valve (TCV) | Refer to ON-VEHICLE INSPECTION - Step 3 | |
| 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 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 body | Refer to INSPECTION | |
| Intake system | Refer to ON-VEHICLE INSPECTION | |
| Valve timing | Refer to PROCEDURE - Step 5 | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 9 | |
| Surging (Poor driveability) | Spark plug | Refer to ON-VEHICLE INSPECTION - Step 2 |
| 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 P0016: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A); DTC P0017: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B) | |
| 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 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 DTC P0016: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A); DTC P0017: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B) | |
| Throttle body | Refer to 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 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 REMOVAL | |
| Unable/difficult to refuel | Refueling valve (canister) | Refer to INSPECTION |