Hyundai Sonata LF: Engine Control System / ETC (Electronic Throttle Control) System Troubleshooting

Hyundai Sonata LF 2014-2019 Service Manual / Engine Control / Fuel System / Engine Control System / ETC (Electronic Throttle Control) System Troubleshooting

Fail-Safe Mode

Item	Fail-Safe
ETC Motor	Throttle valve stuck at 7°
TPS	TPS 1 fault	ECM looks at TPS2
	TPS 2 fault	ECM looks at TPS1
	TPS 1,2 fault	Throttle valve stuck at 7°
APS	APS 1 fault	ECM looks at APS 2
	APS 2 fault	ECM looks at APS 1
	APS 1,2 fault	Engine idle state

When throttle value is stuck at 7°, engine speed is limited at below 1,500rpm and vehicle speed at maximum 40 ~ 50 km/h (25 ~ 31 mph)

ETC (Electronic Throttle Control) System Description and Operation

Description The Electronic Throttle Control (ETC) System consists of a throttle body with an integrated control motor and throttle position sensor (TPS)...

ETC (Electronic Throttle Control) System Specifications

Specification [Throttle Position Sensor (TPS)] Throttle angle(°)Output Voltage (V)TPS1TPS200.504.50100.964.05201.413.59301.873.14402.322.68502.782...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Specifications

Specifications ItemSpecificationMaster cylinderTypeSingleI.D. mm(in)NON EPB ?22.22mmEPB?23.81mmPiston stroke mm(in)45±1mm(1.77±0.039in)Fluid level sensorProvidedBrake booster?Type11" SingleBoosting ratio9:01Front disc brakeTypeVentilated discDisc O...

Hyundai Sonata LF 2014-2019 Service Manual: ESP OFF Switch Description and Operation