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Home >> Toyota >> 2019 >> Corolla LE >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (2ZR-FE) - Diagnostics - Introduction (Model Code: ZRE172) >> SFI System >> Problem Symptoms Table [08/2016 - ] >> Problem Symptoms Table [08/2016 - ]
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Problem Symptoms Table [08/2016 - ]

HINT: 

SFI SYSTEM:

Symptom Suspected Area Link
Engine does not crank (Does not start) Smart key system (w/ smart key system) Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - ]
Battery Refer to PROCEDURE - Step 1
Starter signal circuit Refer to Starter Signal Circuit [08/2016 - ]
Smart key system Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - ]
VC output circuit (ECM 5 V output) Refer to VC Output Circuit [08/2016 - ]
No initial combustion (Does not start) Immobilizer system (w/o smart key system) Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - ]
Immobilizer system (w/ smart key system) Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - ]
ECM power source circuit Refer to ECM Power Source Circuit [08/2013 - ]
VC output circuit (ECM 5 V output) Refer to VC Output Circuit [08/2016 - ]
Crankshaft position sensor Refer to INSPECTION [08/2013 - ]
Fuel pump control circuit Refer to Fuel Pump Control Circuit [08/2013 - ]
Ignition system Refer to ON-VEHICLE INSPECTION [08/2013 - ]
Fuel injector circuit Refer to Fuel Injector Circuit [08/2016 - ]
Valve timing (check for loose or jumped teeth on timing chain) Refer to INSPECTION [08/2013 - ]
No. 1 valve rocker arm sub-assembly* Refer to COMPONENTS [08/2016 - 08/2017] Refer to COMPONENTS [08/2017 - ]
Engine cranks normally but difficult to start Fuel pump control circuit Refer to Fuel Pump Control Circuit [08/2013 - ]
Fuel pump Refer to INSPECTION [08/2013 - ]
Engine coolant temperature sensor Refer to INSPECTION [08/2013 - ]
Ignition system Refer to ON-VEHICLE INSPECTION [08/2013 - ]
Fuel injector assembly Refer to INSPECTION [08/2013 - ]
Compression Refer to ON-VEHICLE INSPECTION [08/2016 - ]
Fuel injector circuit Refer to Fuel Injector Circuit [08/2016 - ]
ECM power source circuit Refer to ECM Power Source Circuit [08/2013 - ]
Intake system Refer to ON-VEHICLE INSPECTION [08/2016 - ]
Throttle body assembly Refer to ON-VEHICLE INSPECTION [08/2013 - ]
No. 1 valve rocker arm sub-assembly* Refer to COMPONENTS [08/2016 - 08/2017] Refer to COMPONENTS [08/2017 - ]
Incomplete intermittent combustion occurs (Does not start) Fuel pump control circuit Refer to Fuel Pump Control Circuit [08/2013 - ]
Fuel pump Refer to INSPECTION [08/2013 - ]
Fuel line -
Ignition system Refer to ON-VEHICLE INSPECTION [08/2013 - ]
Fuel injector assembly Refer to INSPECTION [08/2013 - ]
Crankshaft position sensor Refer to INSPECTION [08/2013 - ]
Valve timing (check for loose or jumped teeth on timing chain) Refer to INSPECTION [08/2013 - ]
High engine speed (Poor idle) Air conditioning signal circuit (for automatic air conditioning system) Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - ]
Air conditioning signal circuit (for manual air conditioning system) Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - ]
Throttle body assembly Refer to ON-VEHICLE INSPECTION [08/2013 - ]
Intake system Refer to ON-VEHICLE INSPECTION [08/2016 - ]
Engine coolant temperature sensor Refer to INSPECTION [08/2013 - ]
ECM power source circuit Refer to ECM Power Source Circuit [08/2013 - ]
PCV hose Refer to COMPONENTS [08/2013 - ]
PCV valve Refer to INSPECTION [08/2013 - ]
Low engine speed (Poor idle) Fuel pump control circuit Refer to Fuel Pump Control Circuit [08/2013 - ]
Throttle body assembly Refer to ON-VEHICLE INSPECTION [08/2013 - ]
Intake system Refer to ON-VEHICLE INSPECTION [08/2016 - ]
PCV hose Refer to COMPONENTS [08/2013 - ]
PCV valve Refer to INSPECTION [08/2013 - ]
Engine stalls on deceleration Idle speed (refer to "Low engine speed" symptom) -
Rough idle Compression Refer to PROCEDURE - Step 10
Air fuel ratio sensor Refer to INSPECTION [08/2013 - ]
Heated oxygen sensor Refer to INSPECTION [08/2013 - ]
Mass air flow meter sub-assembly Refer to ON-VEHICLE INSPECTION [08/2013 - ]
Ignition system Refer to ON-VEHICLE INSPECTION [08/2013 - ]
Fuel line -
Fuel pump Refer to INSPECTION [08/2013 - ]
Intake system Refer to ON-VEHICLE INSPECTION [08/2016 - ]
PCV hose Refer to COMPONENTS [08/2013 - ]
PCV valve Refer to INSPECTION [08/2013 - ]
No. 1 valve rocker arm sub-assembly* Refer to COMPONENTS [08/2016 - 08/2017] Refer to COMPONENTS [08/2017 - ]
External part malfunction (Increase in load: A/C system, CVT system, etc.) -
Hunting (Poor idle) PCV hose Refer to COMPONENTS [08/2013 - ]
PCV valve Refer to INSPECTION [08/2013 - ]
Mass air flow meter sub-assembly Refer to ON-VEHICLE INSPECTION [08/2013 - ]
Air fuel ratio sensor Refer to INSPECTION [08/2013 - ]
Engine stalls during air conditioning operation Air conditioning signal circuit (for automatic air conditioning system) Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - ]
Air conditioning signal circuit (for manual air conditioning system) Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2016 - ]
ECM Refer to TERMINALS OF ECM [08/2016 - ] 
Hesitation/Poor acceleration (Poor driveability) Fuel line -
Fuel pump Refer to INSPECTION [08/2013 - ]
Valve timing (check for loose or jumped teeth on timing chain) Refer to INSPECTION [08/2013 - ]
Mass air flow meter sub-assembly Refer to ON-VEHICLE INSPECTION [08/2013 - ]
Throttle body assembly Refer to ON-VEHICLE INSPECTION [08/2013 - ]
Knock control sensor Refer to INSPECTION [08/2013 - ]
Fuel injector assembly Refer to INSPECTION [08/2013 - ]
Ignition system Refer to ON-VEHICLE INSPECTION [08/2013 - ]
Compression Refer to PROCEDURE - Step 10
Brake override system Refer to Brake Override System [08/2016 - ]
No. 1 valve rocker arm sub-assembly* Refer to COMPONENTS [08/2016 - 08/2017] Refer to COMPONENTS [08/2017 - ]
Surging (Poor driveability) Fuel line -
Fuel pump control circuit Refer to Fuel Pump Control Circuit [08/2013 - ]
Fuel pump Refer to INSPECTION [08/2013 - ]
Ignition system Refer to ON-VEHICLE INSPECTION [08/2013 - ]
Fuel injector assembly Refer to INSPECTION [08/2013 - ]
No. 1 valve rocker arm sub-assembly* Refer to COMPONENTS [08/2016 - 08/2017] Refer to COMPONENTS [08/2017 - ]
Engine stalls soon after starting Mass air flow meter sub-assembly Refer to ON-VEHICLE INSPECTION [08/2013 - ]
Intake system Refer to ON-VEHICLE INSPECTION [08/2016 - ]
Fuel line -
Valve timing (check for loose or jumped teeth on timing chain) Refer to INSPECTION [08/2013 - ]
No. 1 Valve rocker arm sub-assembly* Refer to COMPONENTS [08/2016 - 08/2017] Refer to COMPONENTS [08/2017 - ]
Shift solenoid valve SL (K313 CVT) (for CVT models) Refer to DTC P0741: Torque Converter Clutch Solenoid Performance (Shift Solenoid Valve SL); DTC P075B: Shift Solenoid "G" Performance or Stuck Off; DTC P2757: Torque Converter Clutch Pressure Control Solenoid Performance (Shift Solenoid Valve SLU) [08/2016 - ]
Unable/difficult to refuel Fuel system (canister, refueling valve, roll over valve, fuel tank, etc.) -

HINT: 

*: Check "Fuel Cut Elps Time" in the Data List. If the elapsed time is over 0 sec, then the engine speed is high (the engine speed at which fuel cut occurs + 500 rpm or more). In this situation, there is a possibility that a No. 1 valve rocker arm sub-assembly will become loose and malfunction, check that the No. 1 valve rocker arm sub-assemblies are properly installed.

Refer to COMPONENTS [08/2016 - 08/2017] Refer to COMPONENTS [08/2017 - ]