СИСТЕМА SFI ТАБЛИЦА ПРИЗНАКОВ НЕИСПРАВНОСТЕЙ

Tech Tips

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.

SFI System
Symptom Suspected Area See page
Engine does not crank (Does not start) Battery

Click here

Starter

Click here

Entry and start system

Click here

ST relay

Click here

Park/neutral position switch

Click here

Immobiliser system

Click here

No initial combustion (Does not Start) ECM power source circuit

Click here

Crankshaft position sensor

Click here

Camshaft position sensor

Click here

Ignition system

Click here

Fuel pump control circuit

Click here

Fuel injector circuit

Click here

Valve timing

Click here

ECM

Click here

VC output circuit

Click here

Engine cranks normally but difficult to start Fuel pump control circuit

Click here

Fuel injector circuit

Click here

Engine coolant temperature sensor

Click here

Ignition system

Click here

Throttle body

Click here

Starter signal circuit

Click here

Compression

Click here

High engine idling speed (Poor idling) Throttle body

Click here

A/C signal circuit

Click here

ECM power source circuit

Click here

Engine coolant temperature sensor

Click here

PCV valve

Click here

PCV hose

Click here

Low engine idling speed (Poor idling) Throttle body

Click here

Fuel pump control circuit

Click here

Air induction system

Click here

PCV valve

Click here

PCV hose

Click here

Engine stalls on deceleration Idle speed (refer to "Low engine speed" symptom)

Click here

Rough idling Compression

Click here

Fuel line -
Fuel injector circuit

Click here

Ignition system

Click here

Fuel pump control circuit

Click here

Throttle body

Click here

Air induction system

Click here

PCV valve

Click here

PCV hose

Click here

Mass air flow meter

Click here

Idle hunting Throttle body

Click here

Air induction system

Click here

Mass air flow meter

Click here

PCV valve

Click here

PCV hose

Click here

Hesitation/poor acceleration Fuel pump control circuit

Click here

Fuel line -
Ignition system

Click here

Fuel injector circuit

Click here

Mass air flow meter

Click here

Throttle body

Click here

Air induction system

Click here

Valve timing

Click here

Compression

Click here

Surging (Poor driveability) Fuel line -
Fuel pump control circuit

Click here

Ignition system

Click here

Fuel injector circuit

Click here

Mass air flow meter

Click here

Compression

Click here

Engine stalls soon after starting Fuel pump control circuit

Click here

Fuel line -
Ignition system

Click here

Fuel injector circuit

Click here

Mass air flow meter

Click here

Throttle body

Click here

Air induction system

Click here

PCV valve

Click here

PCV hose

Click here

Compression

Click here

Engine stalls only during A/C operation A/C signal circuit

Click here

ECM

Click here