Problem Symptoms Table

HINT:

Use the table below to help determine the cause of the problem symptom. 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.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

SFI SYSTEM

Symptom	Suspected Area	See
Engine does not crank (Does not start)	Battery	-
	Starter signal circuit	Refer to Starter Signal Circuit .
	Starter	Refer to INSPECTION .
	Starter relay	Refer to ON-VEHICLE INSPECTION - Step 1 .
	Park/neutral position switch (for A/T Models)	Refer to INSPECTION - Step 1 .
	Clutch start switch (for M/T Models)	Refer to INSPECTION .
No initial combustion (Does not start)	ECM power source circuit	Refer to ECM Power Source Circuit .
	Crankshaft position sensor	Refer to INSPECTION PROCEDURE .
	Camshaft position sensor	Refer to INSPECTION PROCEDURE .
	Ignition system	Refer to ON-VEHICLE INSPECTION .
	Fuel pump control circuit	Refer to Fuel Pump Control Circuit .
	Fuel injector circuit	Refer to Fuel Injector Circuit .
	Valve timing	Refer to PROCEDURE - Step 4 .
	VC output circuit	Refer to VC Output Circuit .
	Starter signal circuit	Refer to Starter Signal Circuit .
	Immobiliser system (w/ Immobiliser system)	Refer to HOW TO PROCEED WITH TROUBLESHOOTING .
	ECM	Refer to REMOVAL .
Engine cranks normally but difficult to start	Fuel pump control circuit	Refer to Fuel Pump Control Circuit .
	Fuel pump	Refer to INSPECTION - Step 1 .
	Fuel injector circuit	Refer to Fuel Injector Circuit .
	ECM power source circuit	Refer to ECM Power Source Circuit .
	Starter signal circuit	Refer to Starter Signal Circuit .
	Engine coolant temperature sensor	Refer to INSPECTION PROCEDURE .
	Intake system	Refer to ON-VEHICLE INSPECTION - Step 1 .
	Ignition system	Refer to ON-VEHICLE INSPECTION .
	Spark plug	Refer to ON-VEHICLE INSPECTION - Step 2 .
	Throttle body	Refer to INSPECTION PROCEDURE .
	Compression	Refer to ON-VEHICLE INSPECTION - Step 9 .
Incomplete intermittent combustion occurs (Does not start)	Fuel pump control circuit	Refer to Fuel Pump Control Circuit .
	Fuel pump	Refer to INSPECTION - Step 1 .
	Ignition circuit	Refer to INSPECTION PROCEDURE .
	Ignition system	Refer to ON-VEHICLE INSPECTION .
	Fuel injector circuit	Refer to Fuel Injector Circuit .
	ECM power source circuit	Refer to ECM Power Source Circuit .
	Starter signal circuit	Refer to Starter Signal Circuit .
	Crankshaft position sensor	Refer to INSPECTION PROCEDURE .
	Camshaft position sensor	Refer to INSPECTION PROCEDURE .
	Valve timing	Refer to PROCEDURE - Step 4 .
High engine idle speed	Throttle body	Refer to INSPECTION PROCEDURE .
	Intake system	Refer to ON-VEHICLE INSPECTION - Step 1 .
	A/C signal circuit	-
	ECM power source circuit	Refer to ECM Power Source Circuit .
	Engine coolant temperature sensor	Refer to INSPECTION PROCEDURE .
	PCV valve and hose	Refer to COMPONENTS .
Low engine idle speed (Poor idling)	Throttle body	Refer to INSPECTION PROCEDURE .
	A/C signal circuit	-
	Fuel pump control circuit	Refer to Fuel Pump Control Circuit .
	Fuel pump	Refer to INSPECTION - Step 1 .
	Intake system	Refer to ON-VEHICLE INSPECTION - Step 1 .
	PCV valve and hose	Refer to COMPONENTS .
Rough idling	Compression	Refer to ON-VEHICLE INSPECTION - Step 9 .
	Ignition system	Refer to ON-VEHICLE INSPECTION .
	Spark plug	Refer to ON-VEHICLE INSPECTION - Step 2 .
	Fuel injector circuit	Refer to Fuel Injector Circuit .
	ECM power source circuit	Refer to ECM Power Source Circuit .
	Fuel pump control circuit	Refer to Fuel Pump Control Circuit .
	Fuel pump	Refer to INSPECTION - Step 1 .
	Throttle body	Refer to INSPECTION PROCEDURE .
	Intake system	Refer to ON-VEHICLE INSPECTION - Step 1 .
	PCV valve and hose	Refer to COMPONENTS .
	Air fuel ratio sensor	Refer to INSPECTION PROCEDURE .
	Heated oxygen sensor	Refer to INSPECTION PROCEDURE .
	Mass air flow meter	Refer to PROCEDURE - Step 6 .
Idle hunting	Throttle body	Refer to INSPECTION PROCEDURE .
	Intake system	Refer to ON-VEHICLE INSPECTION - Step 1 .
	PCV valve and hose	Refer to COMPONENTS .
	Air fuel ratio sensor	Refer to INSPECTION PROCEDURE .
	Mass air flow meter	Refer to PROCEDURE - Step 6 .
Hesitation/Poor acceleration	Fuel pump control circuit	Refer to Fuel Pump Control Circuit .
	Fuel pump	Refer to INSPECTION - Step 1 .
	Spark plug	Refer to ON-VEHICLE INSPECTION - Step 2 .
	Ignition system	Refer to ON-VEHICLE INSPECTION .
	Fuel injector circuit	Refer to Fuel Injector Circuit .
	ECM power source circuit	Refer to ECM Power Source Circuit .
	Mass air flow meter	Refer to PROCEDURE - Step 6 .
	Throttle body	Refer to INSPECTION PROCEDURE .
	Intake system	Refer to ON-VEHICLE INSPECTION - Step 1 .
	Valve timing	Refer to PROCEDURE - Step 4 .
	Compression	Refer to ON-VEHICLE INSPECTION - Step 9 .
	Brake override system	Refer to Brake Override System .
Surging (Poor driveability)	Spark plug	Refer to ON-VEHICLE INSPECTION - Step 2 .
	Fuel pump control circuit	Refer to Fuel Pump Control Circuit .
	Fuel pump	Refer to INSPECTION - Step 1 .
	Ignition system	Refer to ON-VEHICLE INSPECTION .
	Fuel injector circuit	Refer to Fuel Injector Circuit .
	ECM power source circuit	Refer to ECM Power Source Circuit .
	Mass air flow meter	Refer to PROCEDURE - Step 6 .
	Variable valve timing (VVT) system	Refer to INSPECTION PROCEDURE .
	Compression	Refer to ON-VEHICLE INSPECTION - Step 9 .
Engine stalls soon after starting	Fuel pump control circuit	Refer to Fuel Pump Control Circuit .
	Fuel pump	Refer to INSPECTION - Step 1 .
	Spark plug	Refer to ON-VEHICLE INSPECTION - Step 2 .
	Ignition system	Refer to ON-VEHICLE INSPECTION .
	Fuel injector circuit	Refer to Fuel Injector Circuit .
	ECM power source circuit	Refer to ECM Power Source Circuit .
	Mass air flow meter	Refer to PROCEDURE - Step 6 .
	Variable valve timing (VVT) system	Refer to INSPECTION PROCEDURE .
	Throttle body	Refer to INSPECTION PROCEDURE .
	Intake system	Refer to ON-VEHICLE INSPECTION - Step 1 .
	PCV valve and hose	Refer to COMPONENTS .
	Compression	Refer to ON-VEHICLE INSPECTION - Step 9 .
Engine stalls only during A/C operation	A/C signal circuit	-
Engine stalls only during A/C operation	ECM	Refer to REMOVAL .
Unable/difficult to refuel	Fuel system (canister, refueling valve, rollover valve, fuel tank, etc.)	Refer to INSPECTION - Step 1 .