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Problem Symptoms Table

HINT: 

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
Engine does not crank (Does not start) Battery Refer to ON-VEHICLE INSPECTION - Step 1
Starter signal circuit Refer to Starter Signal Circuit
Starter Refer to INSPECTION
STA relay Refer to ON-VEHICLE INSPECTION - Step 3
Park/neutral position switch (for automatic transmission models) Refer to INSPECTION
Clutch start switch (for manual transmission models) Refer to INSPECTION
VC output circuit Refer to VC Output Circuit
No initial combustion (Does not start) ECM power source circuit Refer to ECM Power Source Circuit
Crankshaft position sensor Refer to DTC P0335: Crankshaft Position Sensor "A" Circuit; DTC P0339: Crankshaft Position Sensor "A" Circuit Intermittent
VVT sensor (for intake side) Refer to DTC P0340: Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor); 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)
VVT sensor (for exhaust side) 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)
Ignition system Refer to DTC P0351: Ignition Coil "A" Primary / Secondary Circuit; DTC P0352: Ignition Coil "B" Primary / Secondary Circuit; DTC P0353: Ignition Coil "C" Primary / Secondary Circuit; DTC P0354: Ignition Coil "D" Primary / Secondary Circuit; DTC P0355: Ignition Coil "E" Primary / Secondary Circuit; DTC P0356: Ignition Coil "F" Primary / Secondary Circuit
Fuel pump control circuit Refer to Fuel Pump Control Circuit
Fuel injector circuit Refer to Fuel Injector Circuit
VC output circuit Refer to VC Output Circuit
Immobilizer system Refer to HOW TO PROCEED WITH TROUBLESHOOTING
ECM Refer to TERMINALS OF ECM 
Engine cranks normally but difficult to start Starter signal circuit Refer to Starter Signal Circuit
Fuel pump control circuit Refer to Fuel Pump Control Circuit
Fuel injector circuit Refer to Fuel Injector Circuit
Compression Refer to ON-VEHICLE INSPECTION - Step 3
Difficult to start with cold engine Ignition system Refer to DTC P0351: Ignition Coil "A" Primary / Secondary Circuit; DTC P0352: Ignition Coil "B" Primary / Secondary Circuit; DTC P0353: Ignition Coil "C" Primary / Secondary Circuit; DTC P0354: Ignition Coil "D" Primary / Secondary Circuit; DTC P0355: Ignition Coil "E" Primary / Secondary Circuit; DTC P0356: Ignition Coil "F" Primary / Secondary Circuit
Spark plug Refer to ON-VEHICLE INSPECTION - Step 2
Fuel pump control circuit Refer to Fuel Pump Control Circuit
Fuel injector circuit Refer to Fuel Injector Circuit
Fuel injector Refer to INSPECTION
Start signal circuit Refer to Starter Signal Circuit
Difficult to start with warm engine Fuel injector Refer to INSPECTION
Ignition system Refer to DTC P0351: Ignition Coil "A" Primary / Secondary Circuit; DTC P0352: Ignition Coil "B" Primary / Secondary Circuit; DTC P0353: Ignition Coil "C" Primary / Secondary Circuit; DTC P0354: Ignition Coil "D" Primary / Secondary Circuit; DTC P0355: Ignition Coil "E" Primary / Secondary Circuit; DTC P0356: Ignition Coil "F" Primary / Secondary Circuit
Spark plug Refer to ON-VEHICLE INSPECTION - Step 2
Fuel pump control circuit Refer to Fuel Pump Control Circuit
Fuel injector circuit Refer to Fuel Injector Circuit
Start signal circuit Refer to Starter Signal Circuit
High engine idle speed (Poor idling) Electronic throttle control system Refer to ON-VEHICLE INSPECTION
A/C signal circuit Refer to PROBLEM SYMPTOMS TABLE
ECM power source circuit Refer to ECM Power Source Circuit
Low engine idle speed (Poor idling) Electronic throttle control system Refer to ON-VEHICLE INSPECTION
A/C signal circuit Refer to PROBLEM SYMPTOMS TABLE
Fuel pump control circuit Refer to Fuel Pump Control Circuit
Air induction system -
PCV hose -
Rough idling (Poor idling) Compression Refer to ON-VEHICLE INSPECTION - Step 3
Spark plug Refer to ON-VEHICLE INSPECTION - Step 2
Fuel injector Refer to INSPECTION
Ignition system Refer to DTC P0351: Ignition Coil "A" Primary / Secondary Circuit; DTC P0352: Ignition Coil "B" Primary / Secondary Circuit; DTC P0353: Ignition Coil "C" Primary / Secondary Circuit; DTC P0354: Ignition Coil "D" Primary / Secondary Circuit; DTC P0355: Ignition Coil "E" Primary / Secondary Circuit; DTC P0356: Ignition Coil "F" Primary / Secondary Circuit
Fuel injector circuit Refer to Fuel Injector Circuit
Fuel pump control circuit Refer to Fuel Pump Control Circuit
Electronic throttle control system Refer to ON-VEHICLE INSPECTION
Air induction system -
PCV hose -
Mass air flow meter Refer to ON-VEHICLE INSPECTION
Idle hunting Electronic throttle control system Refer to ON-VEHICLE INSPECTION
Air induction system -
ECM power source circuit Refer to ECM Power Source Circuit
Hesitation/Poor acceleration Fuel pump control circuit Refer to Fuel Pump Control Circuit
Fuel injector circuit Refer to Fuel Injector Circuit
Spark plug Refer to ON-VEHICLE INSPECTION - Step 2
Ignition system Refer to DTC P0351: Ignition Coil "A" Primary / Secondary Circuit; DTC P0352: Ignition Coil "B" Primary / Secondary Circuit; DTC P0353: Ignition Coil "C" Primary / Secondary Circuit; DTC P0354: Ignition Coil "D" Primary / Secondary Circuit; DTC P0355: Ignition Coil "E" Primary / Secondary Circuit; DTC P0356: Ignition Coil "F" Primary / Secondary Circuit
Fuel injector Refer to INSPECTION
Mass air flow meter Refer to ON-VEHICLE INSPECTION
Electronic throttle control system Refer to ON-VEHICLE INSPECTION
Air induction system -
Compression Refer to ON-VEHICLE INSPECTION - Step 3
Surging (Poor driveability) Spark plug Refer to ON-VEHICLE INSPECTION - Step 2
Fuel pump control circuit Refer to Fuel Pump Control Circuit
Ignition system Refer to DTC P0351: Ignition Coil "A" Primary / Secondary Circuit; DTC P0352: Ignition Coil "B" Primary / Secondary Circuit; DTC P0353: Ignition Coil "C" Primary / Secondary Circuit; DTC P0354: Ignition Coil "D" Primary / Secondary Circuit; DTC P0355: Ignition Coil "E" Primary / Secondary Circuit; DTC P0356: Ignition Coil "F" Primary / Secondary Circuit
Fuel injector circuit Refer to Fuel Injector Circuit
Fuel injector Refer to INSPECTION
Mass air flow meter Refer to ON-VEHICLE INSPECTION
Variable valve timing system Refer to ON-VEHICLE INSPECTION
Compression Refer to ON-VEHICLE INSPECTION - Step 3
Engine stalls soon after starting Fuel pump control circuit Refer to Fuel Pump Control Circuit
Spark plug Refer to ON-VEHICLE INSPECTION - Step 2
Ignition system Refer to DTC P0351: Ignition Coil "A" Primary / Secondary Circuit; DTC P0352: Ignition Coil "B" Primary / Secondary Circuit; DTC P0353: Ignition Coil "C" Primary / Secondary Circuit; DTC P0354: Ignition Coil "D" Primary / Secondary Circuit; DTC P0355: Ignition Coil "E" Primary / Secondary Circuit; DTC P0356: Ignition Coil "F" Primary / Secondary Circuit
Fuel injector circuit Refer to Fuel Injector Circuit
Fuel injector Refer to INSPECTION
Variable valve timing system Refer to ON-VEHICLE INSPECTION
Electronic throttle control system Refer to ON-VEHICLE INSPECTION
Air induction system -
PCV hose -
Compression Refer to ON-VEHICLE INSPECTION - Step 3
Engine stalls during A/C operation A/C signal circuit Refer to PROBLEM SYMPTOMS TABLE
ECM Refer to TERMINALS OF ECM 
Unable/difficult to refuel Refueling valve (canister) Refer to INSPECTION
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