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Problem Symptoms Table

HINT:

When a malfunction is not confirmed by a DTC (Diagnostic Trouble Code) check and the cause of problem cannot be identified through a basic inspection, troubleshoot according to the priority order indicated in the table below.

SFI SYSTEM 

SFI SYSTEM PROBLEM SYMPTOMS CHART

Symptom Suspected Area Reference
w/o Smart Key System: Engine does not crank (Does not start) 1. Smart key system HOW TO PROCEED WITH TROUBLESHOOTING
2. Immobiliser system (w/o smart key system) HOW TO PROCEED WITH TROUBLESHOOTING
3. Starter signal circuit DTC P0617 STARTER RELAY CIRCUIT HIGH 
4. Starter REMOVAL
5. STARTER relay ON-VEHICLE INSPECTION
w/ Smart Key System: Engine does not crank (Does not start) 1. Smart key system HOW TO PROCEED WITH TROUBLESHOOTING
2. Immobiliser system (w/o smart key system) HOW TO PROCEED WITH TROUBLESHOOTING
3. Cranking holding function circuit CRANKING HOLDING FUNCTION CIRCUIT 
4. Starter signal circuit DTC P0617 STARTER RELAY CIRCUIT HIGH 
5. Starter REMOVAL
6. STARTER relay ON-VEHICLE INSPECTION
7. ECM power source circuit ECM POWER SOURCE CIRCUIT 
8. ECM -
No initial combustion (Does not start) 1. ECM power source circuit ECM POWER SOURCE CIRCUIT 
2. Ignition system ON-VEHICLE INSPECTION
3. Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
4. Injector ON-VEHICLE INSPECTION
5. Crankshaft position sensor CRANKSHAFT POSITION SENSOR 
6. ECM -
Engine cranks normally but difficult to start 1. Electronic Throttle Control System (ETCS) DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH 
2. Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
3. Ignition system ON-VEHICLE INSPECTION
4. Spark plug ON-VEHICLE INSPECTION
5. Compression ON-VEHICLE INSPECTION
6. Injector ON-VEHICLE INSPECTION
7. Crankshaft position sensor CRANKSHAFT POSITION SENSOR 
Difficult to start with cold engine 1. Starter signal circuit DTC P0617 STARTER RELAY CIRCUIT HIGH 
2. Electronic Throttle Control System (ETCS) DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH 
3. Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
4. Spark plug ON-VEHICLE INSPECTION
5. Ignition system ON-VEHICLE INSPECTION
6. Injector ON-VEHICLE INSPECTION
7. Engine coolant temperature sensor ENGINE COOLANT TEMPERATURE SENSOR 
Difficult to start with warm engine 1. Starter signal circuit DTC P0617 STARTER RELAY CIRCUIT HIGH 
2. Electronic Throttle Control System (ETCS) DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH 
3. Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
4. Spark plug ON-VEHICLE INSPECTION
5. Ignition system ON-VEHICLE INSPECTION
6. Injector ON-VEHICLE INSPECTION
7. Engine coolant temperature sensor ENGINE COOLANT TEMPERATURE SENSOR 
High engine idling speed (Poor idling) 1. Electronic Throttle Control System (ETCS) DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH 
2. ECM power source circuit ECM POWER SOURCE CIRCUIT 
3. A/C signal circuit (Compressor circuit) -
4. Acoustic Control Induction System (ACIS) ACIS CONTROL CIRCUIT 
5. PCV hose ON-VEHICLE INSPECTION
6. ECM -
Low engine idling speed (Poor idling) 1. Electronic Throttle Control System (ETCS) DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH 
2. ECM power source circuit ECM POWER SOURCE CIRCUIT 
3. A/C signal circuit (Compressor circuit) -
4. Acoustic Control Induction System (ACIS) ACIS CONTROL CIRCUIT 
5. PCV hose ON-VEHICLE INSPECTION
6. Injector ON-VEHICLE INSPECTION
7. ECM -
Rough idling (Poor idling) 1. Electronic Throttle Control System (ETCS) DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH 
2. Injector ON-VEHICLE INSPECTION
3. Ignition system ON-VEHICLE INSPECTION
4. Compression ON-VEHICLE INSPECTION
5. Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
6. Spark plug ON-VEHICLE INSPECTION
7. Acoustic Control Induction System (ACIS) ACIS CONTROL CIRCUIT 
8. PCV hose ON-VEHICLE INSPECTION
Hunting (Poor idling) 1. Electronic Throttle Control System (ETCS) DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH 
2. ECM power source circuit ECM POWER SOURCE CIRCUIT 
3. Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
4. Spark plug ON-VEHICLE INSPECTION
5. Ignition system ON-VEHICLE INSPECTION
6. Injector ON-VEHICLE INSPECTION
7. Acoustic Control Induction System (ACIS) ACIS CONTROL CIRCUIT 
8. PCV hose ON-VEHICLE INSPECTION
Hesitation/Poor acceleration (Poor driveability) 1. Injector ON-VEHICLE INSPECTION
2. Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
3. Ignition system ON-VEHICLE INSPECTION
4. Spark plug ON-VEHICLE INSPECTION
5. Air Intake Control System (AICS) ACIS CONTROL CIRCUIT 
6. A/T faulty HOW TO PROCEED WITH TROUBLESHOOTING
Surging (Poor driveability) 1. Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
2. Spark plug ON-VEHICLE INSPECTION
3. Ignition system ON-VEHICLE INSPECTION
4. Injector ON-VEHICLE INSPECTION
Engine stalls soon after starting 1. Fuel pump control circuit FUEL PUMP CONTROL CIRCUIT 
2. Electronic Throttle Control System (ETCS) DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH 
3. Crankshaft position sensor CRANKSHAFT POSITION SENSOR 
4. Spark plug ON-VEHICLE INSPECTION
5. Ignition system ON-VEHICLE INSPECTION
6. Injector ON-VEHICLE INSPECTION
Engine stalls during A/C operation 1. A/C signal circuit -
2. ECM -
Unable/difficult to refuel Refueling valve (canister) -
Engine vibrates frequently when idling (Active Control engine Mount (ACM) system does not operate) Active control engine mount circuit ACTIVE CONTROL ENGINE MOUNT SYSTEM