Problem Symptoms Table [12/2021 - ]

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	Link
Engine does not crank (Does not start)	Engine difficult to start	Refer to Engine Difficult to Start [12/2021 - ]
	Engine difficult to start (Vehicle Control History Code: X0810, X0811 and/or X0812)	Refer to VEHICLE CONTROL HISTORY (RoB) [12/2021 - ]
	Battery	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	ST NO. 1 relay	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Starter assembly	Refer to INSPECTION [12/2021 - ]
	Starter signal circuit	Refer to Starter Signal Circuit [12/2021 - ]
	Smart access system with push-button (for start function)	Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2021 - ]
	VC output circuit (ECM 5 V output)	Refer to VC Output Circuit [12/2021 - ]
No initial combustion (Does not start)	Engine difficult to start	Refer to Engine Difficult to Start [12/2021 - ]
	Engine difficult to start (Vehicle Control History Code: X0810, X0811 and/or X0812)	Refer to VEHICLE CONTROL HISTORY (RoB) [12/2021 - ]
	Immobiliser system	Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2021 - ]
	ECM power source circuit	Refer to ECM Power Source Circuit [12/2021 - ]
	VC output circuit (ECM 5 V output)	Refer to VC Output Circuit [12/2021 - ]
	Ignition system	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Fuel pump control circuit	Refer to Fuel Pump Control Circuit [12/2021 - ]
	Port fuel injector assembly	Refer to INSPECTION [12/2021 - ]
	Direct fuel injector assembly	Refer to INSPECTION [12/2021 - ]
	Crankshaft position sensor	Refer to DTC P0335-1F: Crankshaft Position Sensor "A" Circuit Intermittent; DTC P0335-2A: Crankshaft Position Sensor "A" Signal Stuck in Range; DTC P0335-31: Crankshaft Position Sensor "A" No Signal [12/2021 - ]
	Intake system	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Valve timing	Refer to PROCEDURE - Step 8
	Valve rocker arm sub-assembly*	Refer to REMOVAL [12/2021 - ]
Engine cranks normally but difficult to start	Engine difficult to start	Refer to Engine Difficult to Start [12/2021 - ]
	Engine difficult to start (Vehicle Control History Code: X0810, X0811 and/or X0812)	Refer to VEHICLE CONTROL HISTORY (RoB) [12/2021 - ]
	ECM power source circuit	Refer to ECM Power Source Circuit [12/2021 - ]
	Throttle body with motor assembly	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Fuel pump assembly (for high pressure side)	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Engine coolant temperature sensor	Refer to INSPECTION [12/2021 - ]
	Fuel pump control circuit	Refer to Fuel Pump Control Circuit [12/2021 - ]
	Ignition system	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Spark plug	Refer to PROCEDURE - Step 3
	Compression	Refer to PROCEDURE - Step 13
	Port fuel injector assembly	Refer to INSPECTION [12/2021 - ]
	Direct fuel injector assembly	Refer to INSPECTION [12/2021 - ]
	Crankshaft position sensor	Refer to DTC P0335-1F: Crankshaft Position Sensor "A" Circuit Intermittent; DTC P0335-2A: Crankshaft Position Sensor "A" Signal Stuck in Range; DTC P0335-31: Crankshaft Position Sensor "A" No Signal [12/2021 - ]
	Intake system	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Valve timing	Refer to PROCEDURE - Step 8
	Valve rocker arm sub-assembly*	Refer to REMOVAL [12/2021 - ]
Incomplete intermittent combustion occurs (Does not start)	Engine difficult to start	Refer to Engine Difficult to Start [12/2021 - ]
	Engine difficult to start (Vehicle Control History Code: X0810, X0811 and/or X0812)	Refer to VEHICLE CONTROL HISTORY (RoB) [12/2021 - ]
	Fuel pump control circuit	Refer to Fuel Pump Control Circuit [12/2021 - ]
	Ignition system	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Port fuel injector assembly	Refer to INSPECTION [12/2021 - ]
	Direct fuel injector assembly	Refer to INSPECTION [12/2021 - ]
	Crankshaft position sensor	Refer to DTC P0335-1F: Crankshaft Position Sensor "A" Circuit Intermittent; DTC P0335-2A: Crankshaft Position Sensor "A" Signal Stuck in Range; DTC P0335-31: Crankshaft Position Sensor "A" No Signal [12/2021 - ]
	Intake system	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Valve timing	Refer to PROCEDURE - Step 8
High engine speed	Throttle body with motor assembly	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	ECM power source circuit	Refer to ECM Power Source Circuit [12/2021 - ]
	PCV hose	Refer to PROCEDURE - Step 14
	PCV system	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
Low engine speed (Poor idle)	Rough idling	Refer to Rough Idling [12/2021 - ]
	Rough idling (Vehicle Control History Code: X0821, X0822, X0823, X0824, X0825, X0826, X082A, X082D and/or X082E)	Refer to VEHICLE CONTROL HISTORY (RoB) [12/2021 - ]
	Fuel pump control circuit	Refer to Fuel Pump Control Circuit [12/2021 - ]
	Throttle body with motor assembly	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Port fuel injector assembly	Refer to INSPECTION [12/2021 - ]
	Direct fuel injector assembly	Refer to INSPECTION [12/2021 - ]
	Fuel pump assembly (for high pressure side)	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	PCV hose	Refer to PROCEDURE - Step 14
	PCV system	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Intake system	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	No. 2 turbo pressure sensor	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Electric water pump assembly	Refer to PROCEDURE - Step 2
Rough idle	Rough idling	Refer to Rough Idling [12/2021 - ]
	Rough idling (Vehicle Control History Code: X0821, X0822, X0823, X0824, X0825, X0826, X082A, X082D and/or X082E)	Refer to VEHICLE CONTROL HISTORY (RoB) [12/2021 - ]
	Throttle body with motor assembly	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Port fuel injector assembly	Refer to INSPECTION [12/2021 - ]
	Direct fuel injector assembly	Refer to INSPECTION [12/2021 - ]
	Fuel pump assembly (for high pressure side)	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Ignition system	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Compression	Refer to PROCEDURE - Step 13
	Fuel pump control circuit	Refer to Fuel Pump Control Circuit [12/2021 - ]
	Spark plug	Refer to PROCEDURE - Step 3
	Intake system	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Valve timing	Refer to PROCEDURE - Step 8
	Valve rocker arm sub-assembly*	Refer to REMOVAL [12/2021 - ]
	No. 2 turbo pressure sensor	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Electric water pump assembly	Refer to PROCEDURE - Step 2
Hunting (Poor idle)	Rough idling	Refer to Rough Idling [12/2021 - ]
	Rough idling (Vehicle Control History Code: X0821, X0822, X0823, X0824, X0825, X0826, X082A, X082D and/or X082E)	Refer to VEHICLE CONTROL HISTORY (RoB) [12/2021 - ]
	Throttle body with motor assembly	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	ECM power source circuit	Refer to ECM Power Source Circuit [12/2021 - ]
	Fuel pump control circuit	Refer to Fuel Pump Control Circuit [12/2021 - ]
	Spark plug	Refer to PROCEDURE - Step 3
	Intake system	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Electric water pump assembly	Refer to PROCEDURE - Step 2
	Drive start control	Refer to Drive Start Control [12/2021 - ]
Hesitation/Poor acceleration (Poor driveability)	Rough idling	Refer to Rough Idling [12/2021 - ]
	Rough idling (Vehicle Control History Code: X0821, X0822, X0823, X0824, X0825, X0826, X082A, X082D and/or X082E)	Refer to VEHICLE CONTROL HISTORY (RoB) [12/2021 - ]
	Port fuel injector assembly	Refer to INSPECTION [12/2021 - ]
	Direct fuel injector assembly	Refer to INSPECTION [12/2021 - ]
	Fuel pump control circuit	Refer to Fuel Pump Control Circuit [12/2021 - ]
	Fuel pump assembly (for high pressure side)	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Ignition system	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Spark plug	Refer to PROCEDURE - Step 3
	Intake system	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Valve timing	Refer to PROCEDURE - Step 8
	No. 2 turbo pressure sensor	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Waste gate valve (turbocharger sub-assembly)	Refer to PROCEDURE - Step 3
	Waste gate valve actuator assembly (turbocharger sub-assembly)	Refer to INSPECTION [12/2021 - ]
	Air by-pass valve assembly	Refer to INSPECTION [12/2021 - ]
	Turbocharger sub-assembly	Refer to INSPECTION [12/2021 - ]
	Electric water pump assembly	Refer to PROCEDURE - Step 2
	Valve rocker arm sub-assembly*	Refer to REMOVAL [12/2021 - ]
	Brake override system	Refer to Brake Override System [12/2021 - ]
	Drive start control	Refer to Drive Start Control [12/2021 - ]
Lack of power	Lack of power	Refer to Lack of Power [12/2021 - ]
	Lack of power (Vehicle Control History Code: X0844)	Refer to VEHICLE CONTROL HISTORY (RoB) [12/2021 - ]
	Waste gate valve (turbocharger sub-assembly)	Refer to PROCEDURE - Step 3
	Waste gate valve actuator assembly (turbocharger sub-assembly)	Refer to INSPECTION [12/2021 - ]
	Air by-pass valve assembly	Refer to INSPECTION [12/2021 - ]
	Turbocharger sub-assembly	Refer to INSPECTION [12/2021 - ]
Surging (Poor driveability)	Rough idling	Refer to Rough Idling [12/2021 - ]
	Rough idling (Vehicle Control History Code: X0821, X0822, X0823, X0824, X0825, X0826, X082A, X082D and/or X082E)	Refer to VEHICLE CONTROL HISTORY (RoB) [12/2021 - ]
	Fuel pump control circuit	Refer to Fuel Pump Control Circuit [12/2021 - ]
	Spark plug	Refer to PROCEDURE - Step 3
	Port fuel injector assembly	Refer to INSPECTION [12/2021 - ]
	Direct fuel injector assembly	Refer to INSPECTION [12/2021 - ]
	Electric water pump assembly	Refer to PROCEDURE - Step 2
	Valve rocker arm sub-assembly*	Refer to REMOVAL [12/2021 - ]
Engine stalls soon after starting	Engine stalls	Refer to Engine Stalls [12/2021 - ]
	Engine stalls (Vehicle Control History Code: X0800 and/or X0803)	Refer to VEHICLE CONTROL HISTORY (RoB) [12/2021 - ]
	Fuel pump control circuit	Refer to Fuel Pump Control Circuit [12/2021 - ]
	Throttle body with motor assembly	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Crankshaft position sensor	Refer to DTC P0335-1F: Crankshaft Position Sensor "A" Circuit Intermittent; DTC P0335-2A: Crankshaft Position Sensor "A" Signal Stuck in Range; DTC P0335-31: Crankshaft Position Sensor "A" No Signal [12/2021 - ]
	Ignition system	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Fuel pump assembly (for high pressure side)	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Intake system	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Valve timing	Refer to PROCEDURE - Step 8
	No. 2 turbo pressure sensor	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Electric water pump assembly	Refer to PROCEDURE - Step 2
Engine stalls soon after slow down	Engine stalls	Refer to Engine Stalls [12/2021 - ]
	Engine stalls (Vehicle Control History Code: X0800 and/or X0803)	Refer to VEHICLE CONTROL HISTORY (RoB) [12/2021 - ]
	Port fuel injector assembly	Refer to INSPECTION [12/2021 - ]
	Direct fuel injector assembly	Refer to INSPECTION [12/2021 - ]
	Throttle body with motor assembly	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	ECM	Refer to TERMINALS OF ECM [12/2021 - ]
	Crankshaft position sensor	Refer to DTC P0335-1F: Crankshaft Position Sensor "A" Circuit Intermittent; DTC P0335-2A: Crankshaft Position Sensor "A" Signal Stuck in Range; DTC P0335-31: Crankshaft Position Sensor "A" No Signal [12/2021 - ]
	Ignition system	Refer to ON-VEHICLE INSPECTION [12/2021 - ]
	Air by-pass valve assembly	Refer to INSPECTION [12/2021 - ]
MIL (malfunction indicator lamp) malfunction	MIL Circuit	Refer to MIL Circuit [12/2021 - ]
MIL (malfunction indicator lamp) malfunction	Meter/gauge system	Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2021 - ]
White smoke emitted	Turbocharger oil leak and white smoke	Refer to Turbocharger Oil Leak and White Smoke [12/2021 - ]
Turbocharger noise	Turbocharger noise	Refer to Turbocharger Noise [12/2021 - ]

HINT:

*: Check "Fuel Cut Elapsed Time" in the Data List. If the elapsed time is over 0 sec, then the engine speed is high (the engine speed at which fuel cut occurs + 500 rpm or more). In this situation, there is a possibility that a valve rocker arm sub-assembly will become loose and malfunction, check that the No. 1 valve rocker arm sub-assemblies are properly installed.