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.

SFI SYSTEM

SFI SYMPTOM CHART

Symptom	Suspected Area	Reference
Engine does not crank (Does not start)	Battery	ON-VEHICLE INSPECTION
	Starter (for standard area)	STARTER (FOR 0.8 KW TYPE)
	Starter (for cold area)	STARTER (FOR 1.6 KW TYPE)
	Cranking holding function circuit	CRANKING HOLDING FUNCTION CIRCUIT
	Starter relay	STARTER RELAY
	Park/neutral position switch	INSPECTION
	Clutch start switch	CLUTCH PEDAL SWITCH
	Immobilizer System	HOW TO PROCEED WITH TROUBLESHOOTING
No initial combustion (Does not start)	ECM power source circuit	ECM POWER SOURCE CIRCUIT
	Crankshaft position sensor	CRANKSHAFT POSITION SENSOR
	Camshaft position sensor	CAMSHAFT POSITION SENSOR
	Ignition system	ON-VEHICLE INSPECTION
	Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	VC output circuit	VC OUTPUT CIRCUIT
	ECM	TERMINALS OF ECM
Engine cranks normally but difficult to start	Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
Engine cranks normally but difficult to start	Compression	ON-VEHICLE INSPECTION
Difficult to start with cold engine	Ignition system	ON-VEHICLE INSPECTION
	Spark plug	REMOVAL
	Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	Injector	REMOVAL
Difficult to start with warm engine	Injector	REMOVAL
	Ignition system	ON-VEHICLE INSPECTION
	Spark plug	REMOVAL
	Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
High engine idle speed	Electronic throttle control system	DTC P0120 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT MALFUNCTION; DTC P0122 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT LOW INPUT; DTC P0123 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT HIGH INPUT; DTC P0220 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT; DTC P0222 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT LOW INPUT; DTC P0223 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT HIGH INPUT; DTC P2135 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A"/"B" VOLTAGE CORRELATION
	A/C signal circuit	-
	ECM power source circuit	ECM POWER SOURCE CIRCUIT
Low engine idle speed (Poor idling)	Electronic throttle control system	DTC P0120 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT MALFUNCTION; DTC P0122 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT LOW INPUT; DTC P0123 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT HIGH INPUT; DTC P0220 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT; DTC P0222 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT LOW INPUT; DTC P0223 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT HIGH INPUT; DTC P2135 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A"/"B" VOLTAGE CORRELATION
	A/C signal circuit	-
	Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	Air induction system	ON-VEHICLE INSPECTION
	PCV hose	-
Rough idling	Compression	ON-VEHICLE INSPECTION
	Spark plug	REMOVAL
	Injector	REMOVAL
	Ignition system	ON-VEHICLE INSPECTION
	Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	Electronic throttle control system	DTC P0120 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT MALFUNCTION; DTC P0122 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT LOW INPUT; DTC P0123 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT HIGH INPUT; DTC P0220 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT; DTC P0222 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT LOW INPUT; DTC P0223 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT HIGH INPUT; DTC P2135 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A"/"B" VOLTAGE CORRELATION
	Air induction system	ON-VEHICLE INSPECTION
	PCV hose	-
	Mass air flow meter	MASS AIR FLOW METER
Idle hunting	Electronic throttle control system	DTC P0120 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT MALFUNCTION; DTC P0122 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT LOW INPUT; DTC P0123 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT HIGH INPUT; DTC P0220 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT; DTC P0222 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT LOW INPUT; DTC P0223 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT HIGH INPUT; DTC P2135 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A"/"B" VOLTAGE CORRELATION
	Air induction system	ON-VEHICLE INSPECTION
	ECM power source circuit	ECM POWER SOURCE CIRCUIT
Hesitation/ Poor acceleration	Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	Spark plug	REMOVAL
	Ignition system	ON-VEHICLE INSPECTION
	Injector	REMOVAL
	Mass air flow meter	MASS AIR FLOW METER
	Electronic throttle control system	DTC P0120 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT MALFUNCTION; DTC P0122 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT LOW INPUT; DTC P0123 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT HIGH INPUT; DTC P0220 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT; DTC P0222 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT LOW INPUT; DTC P0223 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT HIGH INPUT; DTC P2135 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A"/"B" VOLTAGE CORRELATION
	Air induction system	ON-VEHICLE INSPECTION
	Compression	ON-VEHICLE INSPECTION
Surging (Poor driveability)	Spark plug	REMOVAL
	Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	Ignition system	ON-VEHICLE INSPECTION
	Injector	REMOVAL
	Mass air flow meter	MASS AIR FLOW METER
	Variable valve timing system	DTC P0010 CAMSHAFT POSITION "A" ACTUATOR CIRCUIT (BANK 1)
	Compression	ON-VEHICLE INSPECTION
Engine stalls soon after starting	Fuel pump control circuit	FUEL PUMP CONTROL CIRCUIT
	Spark plug	REMOVAL
	Ignition system	ON-VEHICLE INSPECTION
	Injector	REMOVAL
	Variable valve timing system	DTC P0010 CAMSHAFT POSITION "A" ACTUATOR CIRCUIT (BANK 1)
	Electronic throttle control system	DTC P0120 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT MALFUNCTION; DTC P0122 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT LOW INPUT; DTC P0123 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT HIGH INPUT; DTC P0220 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT; DTC P0222 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT LOW INPUT; DTC P0223 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT HIGH INPUT; DTC P2135 THROTTLE/PEDAL POSITION SENSOR/SWITCH "A"/"B" VOLTAGE CORRELATION
	Air induction system	ON-VEHICLE INSPECTION
	PCV hose	-
	Compression	ON-VEHICLE INSPECTION
Engine stalls only during A/C operation	A/C signal circuit	-
Engine stalls only during A/C operation	ECM	TERMINALS OF ECM
Unable/difficult to refuel	Refueling valve (canister)	-