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Home >> Lexus >> 2017 >> RC 300 F Sport >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2GR-FSE) - Diagnostics - Introduction (1 Of 3) >> SFI System >> Problem Symptoms Table [09/2014 - 10/2015] >> Problem Symptoms Table [09/2014 - 10/2015]
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Problem Symptoms Table [09/2014 - 10/2015]

HINT: 

SFI SYSTEM

Symptom Suspected Area Link
Engine does not crank (Does not start) Battery Refer to PROCEDURE - Step 1
ST relay Refer to ON-VEHICLE INSPECTION [09/2014 - 10/2015]
Starter assembly Refer to INSPECTION [09/2014 - 11/2017]
VC output circuit (ECM 5 V output) Refer to VC Output Circuit [09/2014 - 11/2017]
Starter signal circuit Refer to Starter Signal Circuit [09/2014 - 10/2015]
Smart access system with push-button start (for start function) Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - 10/2015]
Park/neutral position switch assembly (for AWD models) Refer to INSPECTION [09/2014 - ]
Park/neutral position switch assembly (for 2WD models) Refer to INSPECTION [09/2014 - ]
No initial combustion (Does not start) Immobiliser system Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - 11/2017]
ECM power source circuit Refer to ECM Power Source Circuit [09/2014 - 11/2017]
VC output circuit (ECM 5 V output) Refer to VC Output Circuit [09/2014 - 11/2017]
Crankshaft position sensor Refer to INSPECTION [09/2014 - 11/2017]
VVT sensor (for intake camshaft) Refer to DTC P0340: Camshaft Position Sensor Circuit; DTC P0342: Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor); DTC P0343: Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor); DTC P0345: Camshaft Position Sensor "A" Circuit (Bank 2); DTC P0347: Camshaft Position Sensor "A" Circuit Low Input (Bank 2); DTC P0348: Camshaft Position Sensor "A" Circuit High Input (Bank 2) [09/2014 - 08/2016]
VVT sensor (for exhaust camshaft) Refer to DTC P0365: Camshaft Position Sensor "B" Circuit (Bank 1); DTC P0367: Camshaft Position Sensor "B" Circuit Low Input (Bank 1); DTC P0368: Camshaft Position Sensor "B" Circuit High Input (Bank 1); DTC P0390: Camshaft Position Sensor "B" Circuit (Bank 2); DTC P0392: Camshaft Position Sensor "B" Circuit Low Input (Bank 2); DTC P0393: Camshaft Position Sensor "B" Circuit High Input (Bank 2) [09/2014 - 08/2016]
Fuel pump control circuit Refer to Fuel Pump Control Circuit [09/2014 - 10/2015]
Ignition system Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
Valve timing Refer to PROCEDURE - Step 5
Starter signal circuit Refer to Starter Signal Circuit [09/2014 - 10/2015]
ECM Refer to TERMINALS OF ECM [09/2014 - 11/2017] 
Engine cranks normally but difficult to start Fuel pump control circuit Refer to Fuel Pump Control Circuit [09/2014 - 10/2015]
Fuel pump (for high pressure side) Refer to INSPECTION [09/2014 - 11/2017]
Engine coolant temperature sensor Refer to INSPECTION [09/2014 - 11/2017]
Ignition system Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
Fuel injector assembly (for port injection) Refer to INSPECTION [09/2014 - 11/2017]
Fuel injector assembly (for direct injection) Refer to INSPECTION [09/2014 - 11/2017]
Compression Refer to PROCEDURE - Step 10
Intake system Refer to ON-VEHICLE INSPECTION [09/2014 - 10/2015]
Throttle body with motor assembly Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
PCV hose Refer to COMPONENTS [09/2014 - 11/2017]
Starter signal circuit Refer to Starter Signal Circuit [09/2014 - 10/2015]
ECM power source circuit Refer to ECM Power Source Circuit [09/2014 - 11/2017]
Incomplete intermittent combustion occurs (Does not start) Fuel pump control circuit Refer to Fuel Pump Control Circuit [09/2014 - 10/2015]
Ignition system Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
Fuel line -
Fuel pump (for low pressure side) Refer to INSPECTION [09/2014 - 11/2017]
Fuel pump (for high pressure side) Refer to INSPECTION [09/2014 - 11/2017]
Fuel injector assembly (for port injection) Refer to INSPECTION [09/2014 - 11/2017]
Fuel injector assembly (for direct injection) Refer to INSPECTION [09/2014 - 11/2017]
Crankshaft position sensor Refer to INSPECTION [09/2014 - 11/2017]
VVT sensor (for intake camshaft) Refer to DTC P0340: Camshaft Position Sensor Circuit; DTC P0342: Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor); DTC P0343: Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor); DTC P0345: Camshaft Position Sensor "A" Circuit (Bank 2); DTC P0347: Camshaft Position Sensor "A" Circuit Low Input (Bank 2); DTC P0348: Camshaft Position Sensor "A" Circuit High Input (Bank 2) [09/2014 - 08/2016]
VVT sensor (for exhaust camshaft) Refer to DTC P0365: Camshaft Position Sensor "B" Circuit (Bank 1); DTC P0367: Camshaft Position Sensor "B" Circuit Low Input (Bank 1); DTC P0368: Camshaft Position Sensor "B" Circuit High Input (Bank 1); DTC P0390: Camshaft Position Sensor "B" Circuit (Bank 2); DTC P0392: Camshaft Position Sensor "B" Circuit Low Input (Bank 2); DTC P0393: Camshaft Position Sensor "B" Circuit High Input (Bank 2) [09/2014 - 08/2016]
Valve timing Refer to PROCEDURE - Step 5
Starter signal circuit Refer to Starter Signal Circuit [09/2014 - 10/2015]
ECM power source circuit Refer to ECM Power Source Circuit [09/2014 - 11/2017]
High engine speed Air conditioning signal circuit Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - 10/2015]
Throttle body with motor assembly Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
Intake system Refer to ON-VEHICLE INSPECTION [09/2014 - 10/2015]
Engine coolant temperature sensor Refer to INSPECTION [09/2014 - 11/2017]
PCV hose Refer to COMPONENTS [09/2014 - 11/2017]
PCV system Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
ECM power source circuit Refer to ECM Power Source Circuit [09/2014 - 11/2017]
Low engine speed (Poor idle) Fuel pump control circuit Refer to Fuel Pump Control Circuit [09/2014 - 10/2015]
Fuel pump (for high pressure side) Refer to INSPECTION [09/2014 - 11/2017]
Throttle body with motor assembly Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
Intake system Refer to ON-VEHICLE INSPECTION [09/2014 - 10/2015]
PCV hose Refer to COMPONENTS [09/2014 - 11/2017]
Rough idle Compression (engine mechanical) Refer to PROCEDURE - Step 10
Air fuel ratio sensor Refer to INSPECTION [09/2014 - 11/2017]
Heated oxygen sensor Refer to INSPECTION [09/2014 - 11/2017]
Mass air flow meter sub-assembly Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
Ignition system Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
Air conditioning signal circuit Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - 10/2015]
Fuel injector assembly (for port injection) Refer to INSPECTION [09/2014 - 11/2017]
Fuel injector assembly (for direct injection) Refer to INSPECTION [09/2014 - 11/2017]
Fuel line -
Fuel pump (for low pressure side) Refer to INSPECTION [09/2014 - 11/2017]
Fuel pump (for high pressure side) Refer to INSPECTION [09/2014 - 11/2017]
Intake system Refer to ON-VEHICLE INSPECTION [09/2014 - 10/2015]
Electronic throttle control system Refer to DTC P0120: Throttle Pedal Position Sensor / Switch "A" Circuit; DTC P0121: Throttle Pedal Position Sensor / Switch "A" Circuit Range / Performance; DTC P0122: Throttle / Pedal Position Sensor / Switch "A" Circuit Low Input; DTC P0123: Throttle / Pedal Position Sensor / Switch "A" Circuit High Input; DTC P0220: Throttle / Pedal Position Sensor / Switch "B" Circuit; DTC P0222: Throttle / Pedal Position Sensor / Switch "B" Circuit Low Input; DTC P0223: Throttle / Pedal Position Sensor / Switch "B" Circuit High Input; DTC P2135: Throttle / Pedal Position Sensor / Switch "A" / "B" Voltage Correlation [09/2014 - 11/2017]
PCV hose Refer to COMPONENTS [09/2014 - 11/2017]
Hunting (Poor idle) Electronic throttle control system Refer to DTC P0120: Throttle Pedal Position Sensor / Switch "A" Circuit; DTC P0121: Throttle Pedal Position Sensor / Switch "A" Circuit Range / Performance; DTC P0122: Throttle / Pedal Position Sensor / Switch "A" Circuit Low Input; DTC P0123: Throttle / Pedal Position Sensor / Switch "A" Circuit High Input; DTC P0220: Throttle / Pedal Position Sensor / Switch "B" Circuit; DTC P0222: Throttle / Pedal Position Sensor / Switch "B" Circuit Low Input; DTC P0223: Throttle / Pedal Position Sensor / Switch "B" Circuit High Input; DTC P2135: Throttle / Pedal Position Sensor / Switch "A" / "B" Voltage Correlation [09/2014 - 11/2017]
Intake system Refer to ON-VEHICLE INSPECTION [09/2014 - 10/2015]
ECM power source circuit Refer to ECM Power Source Circuit [09/2014 - 11/2017]
PCV hose Refer to COMPONENTS [09/2014 - 11/2017]
Mass air flow meter sub-assembly Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
Air fuel ratio sensor Refer to INSPECTION [09/2014 - 11/2017]
Hesitation/Poor acceleration (Poor driveability) Fuel line -
Fuel pump (for low pressure side) Refer to INSPECTION [09/2014 - 11/2017]
Fuel pump (for high pressure side) Refer to INSPECTION [09/2014 - 11/2017]
Spark plug Refer to PROCEDURE - Step 3
Ignition system Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
Fuel injector assembly (for port injection) Refer to INSPECTION [09/2014 - 11/2017]
Fuel injector assembly (for direct injection) Refer to INSPECTION [09/2014 - 11/2017]
ECM power source circuit Refer to ECM Power Source Circuit [09/2014 - 11/2017]
Mass air flow meter sub-assembly Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
Throttle body with motor assembly Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
Knock control sensor Refer to INSPECTION [09/2014 - 11/2017]
Compression (engine mechanical) Refer to PROCEDURE - Step 10
Brake override system Refer to Brake Override System [09/2014 - 11/2017]
Surging (Poor driveability) Spark plug Refer to PROCEDURE - Step 3
Fuel line -
Fuel pump control circuit Refer to Fuel Pump Control Circuit [09/2014 - 10/2015]
Fuel pump (for high pressure side) Refer to INSPECTION [09/2014 - 11/2017]
Ignition system Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
Fuel injector assembly (for port injection) Refer to INSPECTION [09/2014 - 11/2017]
Fuel injector assembly (for direct injection) Refer to INSPECTION [09/2014 - 11/2017]
ECM power source circuit Refer to ECM Power Source Circuit [09/2014 - 11/2017]
Mass air flow meter sub-assembly Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
Variable Valve Timing (VVT) system Refer to DTC P0011: Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1); DTC P0012: Camshaft Position "A" - Timing Over-Retarded (Bank 1); DTC P0021: Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 2); DTC P0022: Camshaft Position "A" - Timing Over-Retarded (Bank 2) [09/2014 - 11/2017]
Compression (engine mechanical) Refer to PROCEDURE - Step 10
Engine stalls soon after starting Fuel pump control circuit Refer to Fuel Pump Control Circuit [09/2014 - 10/2015]
Fuel pump (for low pressure side) Refer to INSPECTION [09/2014 - 11/2017]
Fuel pump (for high pressure side) Refer to INSPECTION [09/2014 - 11/2017]
Fuel line -
Spark plug Refer to PROCEDURE - Step 3
Ignition system Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
Fuel injector assembly (for port injection) Refer to INSPECTION [09/2014 - 11/2017]
Fuel injector assembly (for direct injection) Refer to INSPECTION [09/2014 - 11/2017]
ECM power source circuit Refer to ECM Power Source Circuit [09/2014 - 11/2017]
Mass air flow meter sub-assembly Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
Throttle body with motor assembly Refer to ON-VEHICLE INSPECTION [09/2014 - 11/2017]
Intake system Refer to ON-VEHICLE INSPECTION [09/2014 - 10/2015]
PCV valve and hose Refer to COMPONENTS [09/2014 - 11/2017]
Compression (engine mechanical) Refer to PROCEDURE - Step 10
Engine stalls only during A/C operation Air conditioning signal circuit Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - 10/2015]
ECM Refer to TERMINALS OF ECM [09/2014 - 11/2017] 
Unable/difficult to refuel Fuel system (canister, refueling valve, roll over valve, fuel tank, etc.) -
Drive mode does not change Drive mode select switch circuit Refer to Drive Mode Select Switch Circuit [09/2014 - 10/2015]
SNOW mode does not change Pattern select switch snow mode circuit Refer to Pattern Select Switch Snow Mode Circuit [09/2014 - 11/2017]