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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 

SFI SYSTEM REFERENCE CHART

Symptom Suspected Area Reference
Engine does not crank (Does not start) Battery ON-VEHICLE INSPECTION
Starter INSPECTION
Starter relay RELAY
Park/neutral position switch ADJUSTMENT
Clutch pedal switch REMOVAL
Engine does not crank (Does not start) ECM power source circuit ECM POWER SOURCE CIRCUIT 
Crankshaft position sensor REMOVAL 
Camshaft position sensor REMOVAL 
Ignition system ON-VEHICLE INSPECTION 
Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
Fuel injector circuit FUEL INJECTOR CIRCUIT 
Valve timing INSTALLATION
VC output circuit VC OUTPUT CIRCUIT 
ECM REMOVAL 
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 INSPECTION 
Intake system INTAKE SYSTEM
Ignition system ON-VEHICLE INSPECTION 
Spark plug ON-VEHICLE INSPECTION 
Throttle body ON-VEHICLE INSPECTION 
Compression ON-VEHICLE INSPECTION
Incomplete intermittent combustion occurs (Does not start) Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
Fuel pump INSPECTION
Ignition circuit SYSTEM DIAGRAM 
Ignition system ON-VEHICLE INSPECTION 
Fuel injector circuit FUEL INJECTOR CIRCUIT 
ECM power source circuit ECM POWER SOURCE CIRCUIT 
Crankshaft position sensor REMOVAL 
Camshaft position sensor REMOVAL 
Valve timing INSTALLATION
High engine idle speed Throttle body ON-VEHICLE INSPECTION 
Intake system INTAKE SYSTEM
A/C signal circuit HOW TO PROCEED WITH TROUBLESHOOTING
ECM power source circuit ECM POWER SOURCE CIRCUIT 
Engine coolant temperature sensor INSPECTION 
PCV valve and hose REMOVAL
Low engine idle speed (Poor idling) Throttle body ON-VEHICLE INSPECTION 
A/C signal circuit HOW TO PROCEED WITH TROUBLESHOOTING
Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
Fuel pump INSPECTION
Intake system INTAKE SYSTEM
PCV valve and hose REMOVAL
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 ON-VEHICLE INSPECTION 
Intake system INTAKE SYSTEM
PCV valve and hose REMOVAL
Air fuel ratio sensor REMOVAL 
Heated oxygen sensor INSPECTION 
Mass air flow meter MASS AIR FLOW METER 
Idle hunting Throttle body ON-VEHICLE INSPECTION 
Intake system INTAKE SYSTEM
PCV valve and hose REMOVAL
Air fuel ratio sensor REMOVAL 
Mass air flow meter MASS AIR FLOW METER 
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 ON-VEHICLE INSPECTION 
Intake system INTAKE SYSTEM
Valve timing INSTALLATION
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 P0010 CAMSHAFT POSITION "A" ACTUATOR CIRCUIT (BANK 1) 
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 P0010 CAMSHAFT POSITION "A" ACTUATOR CIRCUIT (BANK 1) 
Throttle body ON-VEHICLE INSPECTION 
Intake system INTAKE SYSTEM
PCV valve and hose REMOVAL
Compression ON-VEHICLE INSPECTION
Engine stalls only during A/C operation A/C signal circuit HOW TO PROCEED WITH TROUBLESHOOTING
ECM ECM 
Unable/difficult to refuel Refueling valve (canister) for 2WD INSPECTION
Refueling valve (canister) for 4WD REMOVAL