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
PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See page |
|---|---|---|
| Engine does not crank (Does not start) | Battery | ON-VEHICLE INSPECTION |
| Starter | INSPECTION | |
| Starter relay | STARTER RELAY | |
| Park/neutral position switch assembly | ADJUSTMENT | |
| Starter signal circuit | STARTER SIGNAL CIRCUIT | |
| No initial combustion (Does not start) | ECM power source circuit | ECM POWER SOURCE CIRCUIT |
| Crankshaft position sensor | CRANKSHAFT POSITION SENSOR | |
| Ignition system | ON-VEHICLE INSPECTION | |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Fuel injector circuit | FUEL INJECTOR CIRCUIT | |
| Valve timing | DTC P0013 CAMSHAFT POSITION "B" ACTUATOR CIRCUIT/OPEN (BANK 1) | |
| VC output circuit | VC OUTPUT CIRCUIT | |
| Camshaft position sensor | CAMSHAFT POSITION SENSOR | |
| ECM | ECM | |
| Engine cranks normally but difficult to start | Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT |
| Fuel pump | INSPECTION | |
| Fuel injector circuit | FUEL INJECTOR CIRCUIT | |
| ECM power source circuit | ECM POWER SOURCE CIRCUIT | |
| Engine coolant temperature sensor | ENGINE COOLANT TEMPERATURE SENSOR | |
| Intake system | ON-VEHICLE INSPECTION | |
| Ignition system | ON-VEHICLE INSPECTION | |
| Spark plug | ON-VEHICLE INSPECTION | |
| Throttle body | THROTTLE BODY | |
| Compression | ON-VEHICLE INSPECTION | |
| Incomplete intermittent combustion occurs (Does not start) | Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT |
| Fuel pump | INSPECTION | |
| Ignition circuit | 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 | ON-VEHICLE INSPECTION | |
| Fuel injector circuit | FUEL INJECTOR CIRCUIT | |
| ECM power source circuit | ECM POWER SOURCE CIRCUIT | |
| Crankshaft position sensor | CRANKSHAFT POSITION SENSOR | |
| Valve timing | DTC P0013 CAMSHAFT POSITION "B" ACTUATOR CIRCUIT/OPEN (BANK 1) | |
| Camshaft position sensor | CAMSHAFT POSITION SENSOR | |
| High engine idle speed | Throttle body | THROTTLE BODY |
| Intake system | ON-VEHICLE INSPECTION | |
| A/C signal circuit for automatic air conditioning system | PROBLEM SYMPTOMS TABLE | |
| A/C signal circuit for manual air conditioning system | PROBLEM SYMPTOMS TABLE | |
| ECM power source circuit | ECM POWER SOURCE CIRCUIT | |
| Engine coolant temperature sensor | ENGINE COOLANT TEMPERATURE SENSOR | |
| PCV valve and hose | INSPECTION | |
| Acoustic Control Induction System (ACIS) | ON-VEHICLE INSPECTION | |
| Low engine idle speed (Poor idling) | Throttle body | THROTTLE BODY |
| A/C signal circuit for automatic air conditioning system | PROBLEM SYMPTOMS TABLE | |
| A/C signal circuit for manual air conditioning system | PROBLEM SYMPTOMS TABLE | |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Fuel pump | INSPECTION | |
| Intake system | ON-VEHICLE INSPECTION | |
| PCV valve and hose | INSPECTION | |
| Acoustic Control Induction System (ACIS) | ON-VEHICLE INSPECTION | |
| Rough idling | Compression | ON-VEHICLE INSPECTION |
| Ignition system | ON-VEHICLE INSPECTION | |
| Spark plug | ON-VEHICLE INSPECTION | |
| Fuel injector circuit | FUEL INJECTOR CIRCUIT | |
| ECM power source circuit | ECM POWER SOURCE CIRCUIT | |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Fuel pump | INSPECTION | |
| Throttle body | THROTTLE BODY | |
| Intake system | ON-VEHICLE INSPECTION | |
| PCV valve and hose | INSPECTION | |
| Air fuel ratio sensor | AIR FUEL RATIO SENSOR | |
| Heated oxygen sensor | HEATED OXYGEN SENSOR | |
| Mass air flow meter | MASS AIR FLOW METER | |
| Acoustic Control Induction System (ACIS) | ON-VEHICLE INSPECTION | |
| Tumble Control Valve (TCV) | ON-VEHICLE INSPECTION | |
| Idle hunting | Throttle body | THROTTLE BODY |
| Intake system | ON-VEHICLE INSPECTION | |
| PCV valve and hose | INSPECTION | |
| Air fuel ratio sensor | AIR FUEL RATIO SENSOR | |
| Mass air flow meter | MASS AIR FLOW METER | |
| Acoustic Control Induction System (ACIS) | ON-VEHICLE INSPECTION | |
| Tumble Control Valve (TCV) | ON-VEHICLE INSPECTION | |
| Hesitation/poor acceleration | Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT |
| Fuel pump | INSPECTION | |
| Spark plug | ON-VEHICLE INSPECTION | |
| Ignition system | ON-VEHICLE INSPECTION | |
| Fuel injector circuit | FUEL INJECTOR CIRCUIT | |
| ECM power source circuit | ECM POWER SOURCE CIRCUIT | |
| Mass air flow meter | MASS AIR FLOW METER | |
| Throttle body | THROTTLE BODY | |
| Intake system | ON-VEHICLE INSPECTION | |
| Valve timing | DTC P0013 CAMSHAFT POSITION "B" ACTUATOR CIRCUIT/OPEN (BANK 1) | |
| Compression | ON-VEHICLE INSPECTION | |
| Surging (Poor driveability) | Spark plug | ON-VEHICLE INSPECTION |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Fuel pump | INSPECTION | |
| Ignition system | ON-VEHICLE INSPECTION | |
| Fuel injector circuit | FUEL INJECTOR CIRCUIT | |
| ECM power source circuit | ECM POWER SOURCE CIRCUIT | |
| Mass air flow meter | MASS AIR FLOW METER | |
| Variable Valve Timing (VVT) system | DTC P0016 CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION (BANK 1 SENSOR A); DTC P0017 CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION (BANK 1 SENSOR B) | |
| Compression | ON-VEHICLE INSPECTION | |
| Engine stalls soon after starting | Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT |
| Fuel pump | INSPECTION | |
| Spark plug | ON-VEHICLE INSPECTION | |
| Ignition system | ON-VEHICLE INSPECTION | |
| Fuel injector circuit | FUEL INJECTOR CIRCUIT | |
| ECM power source circuit | ECM POWER SOURCE CIRCUIT | |
| Mass air flow meter | MASS AIR FLOW METER | |
| Variable Valve Timing (VVT) system | DTC P0016 CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION (BANK 1 SENSOR A); DTC P0017 CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION (BANK 1 SENSOR B) | |
| Throttle body | THROTTLE BODY | |
| Intake system | ON-VEHICLE INSPECTION | |
| PCV valve and hose | INSPECTION | |
| Compression | ON-VEHICLE INSPECTION | |
| Engine stalls only during A/C operation | A/C signal circuit for automatic air conditioning system | PROBLEM SYMPTOMS TABLE |
| A/C signal circuit for manual air conditioning system | PROBLEM SYMPTOMS TABLE | |
| ECM | ECM | |
| Unable/difficult to refuel | Refueling valve (canister) | INSPECTION |