Engine Control System: Fail-safe

ENGINE CONTROL SYSTEM

Description

When a DTC is detected, ECM executes a mode (in the Fail-safe mode) applicable to the DTC. The fail-safe mode has the preset traveling control mode (accelerator angle variation and engine output limit), device fix mode and combustion control mode.

Fail safe mode		Vehicle behavior	Fail safe pattern
Traveling control mode	Accelerator angle variation control	ECM controls the accelerator pedal depression speed to make it slower than actual speed. This causes a drop in accelerating performance and encourages the driver to repair malfunction. NOTE: ECM does not control the accelerator pedal releasing speed.	A
	Engine output control 1	ECM reduces the engine output, according to the rise in engine speed. This reduces the vehicle speed to encourage the driver to repair malfunction. Driving at 70 km/h (44 MPH) or more is possible. NOTE: This value is a reference value converted from engine power to vehicle speed. Actual power limitation value differs due to the malfunctioning part and driving condition.	B
	Engine output control 2	ECM reduces the engine output, according to the rise in engine speed. This reduces the vehicle speed to encourage the driver to repair malfunction. Driving at 40 km/h (25 MPH) or more is possible. NOTE: This value is a reference value converted from engine power to vehicle speed. Actual power limitation value differs due to the malfunctioning part and driving condition.	C
Device fix mode		This mode fixes the electric IVT motor and the EVT control solenoid valve in the reference position. The intake manifold runner control valve motor is turned OFF (intake manifold runner control valve opens).	D
Combustion control mode	Stratified charge combustion control at starting	No stratified charge combustion at starting (cold start).	E
	Idle speed control	Stops feedback control of idle speed and controls with specified speed.	F
	Recovery speed control at decelerating	Stops recovery speed control by the fuel cut at decelerating and controls with specified speed.
	Idle neutral control	Stops idle neutral control.
	Ignition timing correction control	Partially controls ignition timing control.	G
	Retardation control	Controls ignition timing delay control in the intermediate water temperature range.	G

Fail Safe List

x: Applicable, -: Not applicable

DTC No.	Detected items	Vehicle behavior
		Pattern							Others
		A	B	C	D	E	F	G	Others
P0010	Electric intake valve timing module	-	-	-	x	x	-	-	ECM stops the electric valve timing control. (The camshaft returns to the position of most retard angle.)
P0010	Electric intake valve timing module	-	-	-	x	x	x	-
P0011, P0012, P052A, P052B	Intake valve timing control	-	-	-	x	-	-	-
P0014, P0015	Exhaust valve timing control	-	-	-	x	-	-	-	-
P0078	Exhaust valve timing control solenoid valve	-	-	-	x	-	-	-	-
P0087, P0088, P0090	FRP control system	x	-	-	x	x	-	-	-
P0102, P0103	Mass air flow sensor circuit	x	x	-	x	x	x	x	-
P0117, P0118	Engine coolant temperature sensor circuit	-	-	-	-	x	x	-	-
P0122, P0123, P0222, P0223, P2135	Throttle position sensor	-	-	-	x	-	-	-	The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10 degrees. The ECM regulates the opening speed of the throttle valve to be slower than the normal condition. So, the acceleration will be poor.
P0171, P0172	Fuel injection system	x	-	-	-	x	x	-	-
P0190	FRP sensor	x	-	-	x	x	x	-	-
P0197, P0198	Engine oil temperature sensor	-	-	-	-	-	-	-	Intake and exhaust valve timing control does not function.
P0201, P0202, P0203, P0204	Injector	x	-	-	x	x	-	-	-
P0300	Misfire	x	-	-	-	x	x	-	-
P0335	Crankshaft position sensor	-	-	-	x	x	-	-	-
		-	-	-	x	x	x	-
		-	-	-	x	-	-	-
P0340	Intake camshaft position sensor	-	-	-	x	x	-	-	-
		-	-	-	x	x	x	-
		-	-	-	x	-	-	-
P0365	Exhaust camshaft position sensor	-	-	-	x	-	-	-	-
P0401, P0402	EGR system	-	-	-	x	-	-	-	-
P0404	EGR volume control valve	x	x	x	x	x	x	-	-
P044A, P044B, P044C, P044D, P044E	EGR volume control valve position sensor	x	-	-	x	-	-	-	-



P0500	Vehicle speed sensor	x	-	-	-	x	x	-	-
P0524	Engine oil pressure	-	-	-	-	-	-	-	ECM illuminates engine oil pressure warning lamp on the combination meter. Engine speed will not rise more than 4, 000 RPM due to the fuel cut. Fail-safe is canceled when ignition switch OFF → ON.
P059F	Active grille shutter	-	-	-	-	-	-	-	When a voltage and temperature related malfunction is detected, the active grille shutter stops at the position detection. Except for the above case, operates the active grille shutter to fully opened position.
P0603, P0607	ECM	x	x	-	-	-	-	-	-
P0604		-	-	-	x	-	-	-	-
P0605		-	-	-	x	-	-	-	(Computing part of ECM does not operate normally.) ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
P0606		-	-	-	x	-	-	-	-
P060A		x	x	-	x	-	-	-	-
P060A		-	-	-	x	-	-	-	-
P060B		-	-	-	x	-	-	-	-
P060C		-	-	-	x	-	-	-	(Computing part of ECM does not operate normally.) ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
P061B		-	-	-	x	-	-	-	ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
P062B		x	-	-	x	x	-	-	NOTE: Fail-safe mode may not start depending on malfunction type of ECM.
P0641	Sensor power supply	-	-	-	x	x	-	-	ECM stops the electric valve timing control. (The camshaft returns to the position of most retard angle.)
P0641		-	-	-	x	x	x	-
P0643		-	-	-	x	-	-	-	ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
P10C0, P10C1, P10C2, P10C3	Direct fuel injector	x	-	-	x	x	-	-	-
P10C8, P10C9, P10CA, P10CB	Direct fuel injector	x	-	-	x	x	-	-	-
P1197	Out of gas	-	-	-	x	-	-	-	Engine torque is limited.
P1217	Engine over temperature	-	-	-	-	-	-	-	Engine speed will not rise more than 1, 800 RPM due to the fuel cut.
P1805	Brake switch	-	-	-	-	-	-	-	ECM controls the electric throttle control actuator by regulating the throttle opening to a small range. Therefore, acceleration will be poor.
									Vehicle condition	Driving condition
									When engine is idling	Normal
									When accelerating	Poor acceleration
P2004	Intake manifold runner control valve	x	x	-	x	x	-	-	-
P2008	SWIRL CONT/V (B1)	-	x	-	x	-	-	x	-
P2014	Intake manifold runner control valve position sensor	x	x	-	x	x	-	-	-
P2014		-	-	-	x	-	-	-	-
P2016, P2017, P2018		-	-	-	x	-	-	-	-
P2100, P2103	Throttle control motor relay	-	-	-	x	-	-	-	ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
P2101	Electric throttle control function	-	-	-	x	-	-	-	ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
P2118	Throttle control motor	-	-	-	x	-	-	-	ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
P2119	Electric throttle control actuator	x	x	-	-	-	-	-	-
P2119	Electric throttle control actuator	-	-	-	x	-	-	-	-
P2122, P2123, P2127, P2128, P2138	Accelerator pedal position sensor	-	-	-	x	-	-	-	The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10 degrees. The ECM regulates the opening speed of the throttle valve to be slower than the normal condition. Therefore, the acceleration will be poor.
P25DF	Electric intake valve timing control motor	-	-	-	x	x	-	-	-
P25DF	Electric intake valve timing control motor	-	-	-	x	x	x	-	-
P2614, P2615	Intake camshaft position sensor	-	-	-	x	x	x	-	ECM stops the electric valve timing control. (The camshaft returns to the position of most retard angle.)
P2616	Intake camshaft position sensor	-	-	-	x	x	-	-
P2617, P2618	Crankshaft position sensor	-	-	-	x	x	-	-	ECM stops the electric valve timing control. (The camshaft returns to the position of most retard angle.)
P2619	Crankshaft position sensor	-	-	-	x	x	x	-
P34AC	Electric intake valve timing control actuator	-	-	-	x	x	-	-	-
P34AD	Electric intake valve timing control actuator	-	-	-	x	x	-	-	-
P34AE	Electric intake valve timing control position sensor	-	-	-	x	x	-	-	-
P34AF	Electric intake valve timing control position sensor	-	-	-	x	x	-	-	-
P34C8	Electric intake valve timing control module	-	-	-	x	x	-	-	ECM stops the electric valve timing control. (The camshaft returns to the position of most retard angle.)
P34C8	Electric intake valve timing control module	-	-	-	x	x	x	-
U0101	CAN communication line	-	-	-	-	-	-	-	ECM operates active grille shutter to fully-open position.
U012E, U042F	CAN communication line	-	-	-	x	x	-	-	ECM stops the electric valve timing control. (The camshaft returns to the position of most retard angle.)
U012E, U042F	CAN communication line	-	-	-	x	x	x	-
U0284	CAN communication line	-	-	-	-	-	-	-	ECM operates active grille shutter to fully-open position.
U1040, U1044	CAN communication line	-	-	-	-	-	-	-	ECM operates active grille shutter to fully-open position.

IDLE START/STOP SYSTEM

Description: When a DTC is detected, the start/stop indicator lamp blinks slowly and the start/stop system operation is prohibited. When ECM detects error while operating the idle start/stop system, ECM restarts the engine. Check each DTC code and perform inspection and repair work in accordance with each trouble diagnosis procedure. Refer to DTC Index .