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

Symptom	Suspected Area	See Test
Engine does not crank (Does not start)	Battery	-
	Starter	Refer to INSPECTION
	Cranking holding function circuit	Refer to Cranking Holding Function Circuit
	Starter relay	Refer to ON-VEHICLE INSPECTION
	Park/neutral position switch (for Automatic Transaxle)	Refer to INSPECTION
	Clutch start switch (for Manual Transaxle)	Refer to INSPECTION
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
	Camshaft position sensor (for intake camshaft)	Refer to INSPECTION PROCEDURE
	Camshaft position sensor (for exhaust camshaft)	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 7
	VC output circuit	Refer to VC Output Circuit
	Engine immobiliser system	Refer to HOW TO PROCEED WITH TROUBLESHOOTING
	ECM	Refer to TERMINALS OF ECM
	Valve rocker arm*	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
	Fuel injector circuit	Refer to Fuel Injector Circuit
	ECM power source circuit	Refer to ECM Power Source Circuit
	Engine coolant temperature sensor	Refer to INSPECTION
	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 DTC P0120: Throttle / Pedal Position Sensor / Switch "A" Circuit Malfunction; DTC P0121: Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem; 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
	Compression	Refer to ON-VEHICLE INSPECTION - Step 8
	ECM power source circuit	Refer to ECM Power Source Circuit
	Valve rocker arm*	Refer to REMOVAL
Incomplete intermittent combustion occurs (Does not start)	Fuel pump control circuit	Refer to Fuel Pump Control Circuit
	Fuel pump	Refer to INSPECTION
	Ignition circuit	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
	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
	Crankshaft position sensor	Refer to DTC P0335: Crankshaft Position Sensor "A" Circuit; DTC P0339: Crankshaft Position Sensor "A" Circuit Intermittent
	Camshaft position sensor (for intake camshaft)	Refer to INSPECTION PROCEDURE
	Camshaft position sensor (for exhaust camshaft)	Refer to INSPECTION PROCEDURE
	Valve timing	Refer to PROCEDURE - Step 7
High engine idle speed	Throttle body	Refer to DTC P0120: Throttle / Pedal Position Sensor / Switch "A" Circuit Malfunction; DTC P0121: Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem; 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
	Intake system	Refer to ON-VEHICLE INSPECTION - Step 1
	A/C signal circuit	Refer to PROBLEM SYMPTOMS TABLE
	ECM power source circuit	Refer to ECM Power Source Circuit
	Engine coolant temperature sensor	Refer to REMOVAL
	PCV valve and hose	Refer to COMPONENTS
Low engine idle speed (Poor idling)	Throttle body	Refer to DTC P0120: Throttle / Pedal Position Sensor / Switch "A" Circuit Malfunction; DTC P0121: Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem; 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	Refer to PROBLEM SYMPTOMS TABLE
	Fuel pump control circuit	Refer to Fuel Pump Control Circuit
	Fuel pump	Refer to INSPECTION
	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 8
	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
	Throttle body	Refer to DTC P0120: Throttle / Pedal Position Sensor / Switch "A" Circuit Malfunction; DTC P0121: Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem; 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
	Intake system	Refer to ON-VEHICLE INSPECTION - Step 1
	PCV valve and hose	Refer to COMPONENTS
	Air fuel ratio sensor	Refer to INSPECTION
	Heated oxygen sensor	Refer to INSPECTION
	Mass air flow meter	Refer to INSPECTION
	Valve rocker arm*	Refer to REMOVAL
Idle hunting	Throttle body	Refer to DTC P0120: Throttle / Pedal Position Sensor / Switch "A" Circuit Malfunction; DTC P0121: Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem; 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
	Intake system	Refer to ON-VEHICLE INSPECTION - Step 1
	PCV valve and hose	Refer to COMPONENTS
	Air fuel ratio sensor	Refer to INSPECTION
	Mass air flow meter	Refer to INSPECTION
Hesitation/Poor acceleration	Fuel pump control circuit	Refer to Fuel Pump Control Circuit
	Fuel pump	Refer to INSPECTION
	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 INSPECTION
	Throttle body	Refer to ON-VEHICLE INSPECTION
	Intake system	Refer to ON-VEHICLE INSPECTION - Step 1
	Valve timing	Refer to DTC P0016: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A); DTC P0017: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B)
	Compression	Refer to ON-VEHICLE INSPECTION - Step 8
	Brake override system	Refer to Brake Override System
	Valve rocker arm*	Refer to REMOVAL
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
	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 DTC P0011: Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1); DTC P0012: Camshaft Position "A" - Timing Over-Retarded (Bank 1)
	Compression	Refer to ON-VEHICLE INSPECTION - Step 8
	Brake override system	Refer to Brake Override System
	Valve rocker arm*	Refer to REMOVAL
Engine stalls soon after starting	Fuel pump control circuit	Refer to Fuel Pump Control Circuit
	Fuel pump	Refer to INSPECTION
	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 INSPECTION
	Variable valve timing (VVT) system	Refer to DTC P0016: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A); DTC P0017: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B)
	Throttle body	Refer to ON-VEHICLE INSPECTION
	Intake system	Refer to ON-VEHICLE INSPECTION - Step 1
	PCV valve and hose	Refer to COMPONENTS
	Compression	Refer to ON-VEHICLE INSPECTION - Step 8
	Valve rocker arm*	Refer to REMOVAL
Engine stalls only during A/C operation	A/C signal circuit	Refer to PROBLEM SYMPTOMS TABLE
Engine stalls only during A/C operation	ECM	Refer to TERMINALS OF ECM
Unable/difficult to refuel	Fuel system (canister, refueling valve, roll over valve, fuel tank, etc)	-

HINT:

*: Check the "Fuel Cut Elps Time" value in the Data List or the freeze frame data which were present when the malfunction occurred. If the value is more than 0 seconds, a high engine speed (8000 rpm or more) has occurred in the past. Since the misfire may be caused by valve rocker arm detaching due to an extremely high engine speed, check that the valve rocker arms are properly attached. Refer to REMOVAL . By clearing the DTC, "Fuel Cut Elps Time" will be cleared.