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.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

SFI System

PROBLEM SYMPTOMS CHART

Symptom	Suspected Area	See
Engine does not crank (Does not start)	Battery	ON-VEHICLE INSPECTION
	Starter	STARTER
	Starter relay	RELAY
	Park/neutral position switch assembly	PARK / NEUTRAL POSITION SWITCH
	Starter signal circuit	STARTER SIGNAL CIRCUIT
No initial combustion (Does not start)	ECM power source circuit	ECM POWER SOURCE CIRCUIT
	Crankshaft position sensor	CRANKSHAFT POSITION SENSOR
	Ignition system	IGNITION SYSTEM
	Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	Fuel injector circuit	FUEL INJECTOR CIRCUIT
	Valve timing	DTC P0013 CAMSHAFT POSITION "B" ACTUATOR CIRCUIT / OPEN (BANK 1)
	VC output circuit	VC OUTPUT CIRCUIT
	Camshaft position sensor	CAMSHAFT POSITION SENSOR
	ECM	ECM
Engine cranks normally but difficult to start	Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	Fuel pump	FUEL PUMP
	Fuel injector circuit	FUEL INJECTOR CIRCUIT
	ECM power source circuit	ECM POWER SOURCE CIRCUIT
	Engine coolant temperature sensor	REMOVAL
	Intake system	ON-VEHICLE INSPECTION
	Ignition system	IGNITION SYSTEM
	Spark plug	IGNITION SYSTEM
	Throttle body	THROTTLE BODY
	Compression	ON-VEHICLE INSPECTION
Incomplete intermittent combustion occurs (Does not	Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	Fuel pump	FUEL PUMP
	Ignition circuit	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
	Ignition system	IGNITION SYSTEM
	Fuel injector circuit	FUEL INJECTOR CIRCUIT
	ECM power source circuit	ECM POWER SOURCE CIRCUIT
	Crankshaft position sensor	CRANKSHAFT POSITION SENSOR
	Valve timing	DTC P0013 CAMSHAFT POSITION "B" ACTUATOR CIRCUIT / OPEN (BANK 1)
	Camshaft position sensor	CAMSHAFT POSITION SENSOR
High engine idle speed	Throttle body	THROTTLE BODY
	Intake system	ON-VEHICLE INSPECTION
	A/C signal circuit for automatic air conditioning system	PROBLEM SYMPTOMS TABLE
	A/C signal circuit for manual air conditioning system	PROBLEM SYMPTOMS TABLE
	ECM power source circuit	ECM POWER SOURCE CIRCUIT
	Engine coolant temperature sensor	ENGINE COOLANT TEMPERATURE SENSOR
	PCV valve and hose	PCV VALVE
	Acoustic Control Induction System (ACIS)	INTAKE MANIFOLD
Low engine idle speed (Poor idling)	Throttle body	THROTTLE BODY
	A/C signal circuit for automatic air conditioning system	PROBLEM SYMPTOMS TABLE
	A/C signal circuit for manual air conditioning system	PROBLEM SYMPTOMS TABLE
	Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	Fuel pump	FUEL PUMP
	Intake system	ON-VEHICLE INSPECTION
	PCV valve and hose	PCV VALVE
	Acoustic Control Induction System (ACIS)	INTAKE MANIFOLD
Rough idling	Compression	ENGINE
	Ignition system	IGNITION SYSTEM
	Spark plug	IGNITION SYSTEM
	Fuel injector circuit	FUEL INJECTOR CIRCUIT
	ECM power source circuit	ECM POWER SOURCE CIRCUIT
	Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	Fuel pump	FUEL PUMP
	Throttle body	THROTTLE BODY
	Intake system	ON-VEHICLE INSPECTION
	PCV valve and hose	INSPECTION
	Air fuel ratio sensor	AIR FUEL RATIO SENSOR
	Heated oxygen sensor	HEATED OXYGEN SENSOR
	Mass air flow meter	MASS AIR FLOW METER
	Acoustic Control Induction System (ACIS)	INTAKE MANIFOLD
	Tumble Control Valve (TCV)	INTAKE AIR CONTROL VALVE ACTUATOR (FOR TCV)
Idle hunting	Throttle body	THROTTLE BODY
	Intake system	ON-VEHICLE INSPECTION
	PCV valve and hose	PCV VALVE
	Air fuel ratio sensor	AIR FUEL RATIO SENSOR
	Mass air flow meter	MASS AIR FLOW METER
	Acoustic Control Induction System (ACIS)	INTAKE MANIFOLD
	Tumble Control Valve (TCV)	INTAKE AIR CONTROL VALVE ACTUATOR (FOR TCV)
Hesitation/poor acceleration	Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	Fuel pump	FUEL PUMP
	Spark plug	IGNITION SYSTEM
	Ignition system	IGNITION SYSTEM
	Fuel injector circuit	FUEL INJECTOR CIRCUIT
	ECM power source circuit	ECM POWER SOURCE CIRCUIT
	Mass air flow meter	MASS AIR FLOW METER
	Throttle body	THROTTLE BODY
	Intake system	ON-VEHICLE INSPECTION
	Valve timing	DTC P0013 CAMSHAFT POSITION "B" ACTUATOR CIRCUIT / OPEN (BANK 1)
	Compression	ENGINE
Surging (Poor driveability)	Spark plug	IGNITION SYSTEM
	Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	Fuel pump	FUEL PUMP
	Ignition system	IGNITION SYSTEM
	Fuel injector circuit	FUEL INJECTOR CIRCUIT
	ECM power source circuit	ECM POWER SOURCE CIRCUIT
	Mass air flow meter	MASS AIR FLOW METER
	Variable Valve Timing (VVT) system	DTC P0016 CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION (BANK 1 SENSOR A); DTC P0017 CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION (BANK 1 SENSOR B)
	Compression	ENGINE
Engine stalls soon after starting	Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	Fuel pump	FUEL PUMP
	Spark plug	IGNITION SYSTEM
	Ignition system	IGNITION SYSTEM
	Fuel injector circuit	FUEL INJECTOR CIRCUIT
	ECM power source circuit	ECM POWER SOURCE CIRCUIT
	Mass air flow meter	MASS AIR FLOW METER
	Variable valve timing (VVT) system	DTC P0016 CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION (BANK 1 SENSOR A); DTC P0017 CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION (BANK 1 SENSOR B)
	Throttle body	THROTTLE BODY
	Intake system	ON-VEHICLE INSPECTION
	PCV valve and hose	PCV VALVE
	Compression	ENGINE
Engine stalls only during A/C operation	A/C signal circuit for automatic air conditioning system	PROBLEM SYMPTOMS TABLE
	A/C signal circuit for manual air conditioning system	PROBLEM SYMPTOMS TABLE
	ECM	ECM
Unable/difficult to refuel	Refueling valve (canister)	REMOVAL