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Home >> Lexus >> 2007 >> IS 350 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2GR-FSE) - SFI System Diagnostic And Troubleshooting Introductions, Diagnostic Trouble Code Chart >> SFI System >> Problem Symptoms Table
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Problem Symptoms Table

HINT:

Use the table below to help determine the cause of the problem. The potential cases 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 

PROBLEM SYMPTOMS CHART

Symptom Suspected area See
Engine does not crank (Does not start) 1. Check push-start function initialization HOW TO PROCEED WITH TROUBLESHOOTING
2. Immobilizer System REGISTRATION
3. ECM power source circuit ECM POWER SOURCE CIRCUIT
4. VC output circuit VC OUTPUT CIRCUIT
5. Cranking holding function circuit CRANKING HOLDING FUNCTION CIRCUIT
6. Starter STARTER
No initial combustion (Does not start) 1. ECM power source circuit ECM POWER SOURCE CIRCUIT
2. Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT
3. ECM TERMINALS OF ECM 
Engine cranks normally but difficult to start 1. Fuel pump control circuit DTC P0010 CAMSHAFT POSITION "A" ACTUATOR CIRCUIT (BANK 1); DTC P0020 CAMSHAFT POSITION "A11 ACTUATOR CIRCUIT (BANK 2)
2. Fuel pump for high pressure FUEL PUMP (FOR HIGH PRESSURE)
3. Compression ENGINE MECHANICAL (2GR-FSE)
Difficult to start with cold engine 1. Cranking holding function circuit CRANKING HOLDING FUNCTION CIRCUIT
2. Ignition system IGNITION SYSTEM
3. Spark plug IGNITION SYSTEM
4. Fuel pump control circuit DTC P0010 CAMSHAFT POSITION "A" ACTUATOR CIRCUIT (BANK 1); DTC P0020 CAMSHAFT POSITION "A11 ACTUATOR CIRCUIT (BANK 2)
5. Fuel pump for high pressure FUEL PUMP (FOR HIGH PRESSURE)
6. Fuel injector for direct injection FUEL INJECTOR (FOR DIRECT INJECTION)
7. Fuel injector for port injection FUEL INJECTOR (FOR PORT INJECTION)
Difficult to start with worm engine 1. Cranking holding function circuit CRANKING HOLDING FUNCTION CIRCUIT
2. Fuel injector for port injection FUEL INJECTOR (FOR PORT INJECTION)
3. Fuel injector for direct injection FUEL INJECTOR (FOR DIRECT INJECTION)
4. Ignition system IGNITION SYSTEM
5. Spark plug IGNITION SYSTEM
6. Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT
7. Fuel pump for high pressure FUEL PUMP (FOR HIGH PRESSURE)
High engine idle speed (Poor idling) 1. ECM power source circuit ECM POWER SOURCE CIRCUIT
2. A/C signal circuit (compressor circuit) -
3. Electronic throttle control system THROTTLE BODY
4. Air induction system -
5. PCV hose EMISSION CONTROL SYSTEM
Low engine idle speed (Poor idling) 1. A/C signal circuit (compressor circuit) BLOWER MOTOR CIRCUIT
2. Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT
3. Fuel pump for high pressure FUEL PUMP (FOR HIGH PRESSURE)
4. Electronic throttle control system THROTTLE BODY
5. Air induction system -
6. PCV hose EMISSION CONTROL (2GR-FSE)
Rough idling (Poor idling) 1. Compression ENGINE
2. Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT
3. Fuel pump for high pressure FUEL PUMP (FOR HIGH PRESSURE)
4. Electronic throttle control system THROTTLE BODY
5. Air induction system -
6. PCV hose EMISSION CONTROL (2GR-FSE)
Hunting (Poor idling) 1. ECM power source circuit ECM POWER SOURCE CIRCUIT
2. Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT
3. Fuel pump for high pressure FUEL PUMP (FOR HIGH PRESSURE)
4. Spark plug IGNITION SYSTEM
5. Ignition system IGNITION SYSTEM
6. Fuel injector for port injection FUEL PUMP (FOR HIGH PRESSURE)
7. Fuel injector for direct injection FUEL INJECTOR (FOR DIRECT INJECTION)
8. Electronic throttle control system THROTTLE BODY
9. Air induction system -
10. PCV hose EMISSION CONTROL (2GR-FSE)
Hesitation/ Poor acceleration (Poor driveability) 1. Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT
2. Fuel pump for high pressure FUEL PUMP (FOR HIGH PRESSURE)
3. Spark plug IGNITION SYSTEM
4. Ignition system IGNITION SYSTEM
5. Fuel injector for port injection FUEL INJECTOR (FOR PORT INJECTION)
6. Fuel injector for direct injection FUEL INJECTOR (FOR DIRECT INJECTION)
Surging (Poor driveability) 1. Spark plug IGNITION SYSTEM
2. Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT
3. Fuel pump for high pressure FUEL PUMP (FOR HIGH PRESSURE)
4. Ignition system IGNITION SYSTEM
5. Fuel injector for port injection FUEL INJECTOR (FOR PORT INJECTION)
6. Fuel injector for direct injection FUEL INJECTOR (FOR DIRECT INJECTION)
Engine stalls soon after starting 1. Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT
2. Fuel pump for high pressure FUEL PUMP (FOR HIGH PRESSURE)
3. Spark plug IGNITION SYSTEM
4. Ignition system IGNITION SYSTEM
5. Fuel injector for port injection FUEL INJECTOR (FOR PORT INJECTION)
6. Fuel injector for direct injection FUEL INJECTOR (FOR DIRECT INJECTION)
Engine stalls during A/C operation 1. A/C signal circuit (Compressor circuit) BLOWER MOTOR CIRCUIT
2. ECM TERMINALS OF ECM 
Unable/difficult refuel 1. Refueling valve (canister) -