Hyundai Sonata LF: ESP(Electronic Stability Program) System / Front Wheel Speed Sensor Repair procedures

Hyundai Sonata LF 2014-2019 Service Manual / Brake System / ESP(Electronic Stability Program) System / Front Wheel Speed Sensor Repair procedures

Removal
1.
Raise the vehicle, and make sure it is securely supported.
2.
Remove the wheel cap(A).

   
Be careful not to damage to the wheel cap(A) when removing the it.
3.
Remove the front wheel and tire (A) from front hub.
Tightening torque:
88.2 ~ 107.8 N.m (9.0 ~ 11.0 kgf.m, 65.0 ~ 79.5 lb-ft)

   
Be careful not to damage to the hub bolts when removing the front wheel and tire (A).
4.
Remove the front wheel speed sensor mounting bolt (A).
Tightening torque:
8.8 ~ 13.7 N.m (0.9 ~ 1.4 kgf.m, 6.5 ~ 10.1 lb-ft)

5.
Remove the front wheel speed sensor cable mounting bolt (A).
Tightening torque:
Shock absorber : 8.8 ~ 13.7 N.m (0.9 ~ 1.4 kgf.m, 6.5 ~ 10.1 lb-ft)
Body : 19.6 ~ 29.4 N.m (2.0 ~ 3.0 kgf.m, 14.5 ~ 21.7 lb-ft)

6.
Disconnect the front wheel speed sensor connector, then remove the front wheel speed sensor.

7.
Installation is the reverse of removal.
Inspection
1.
Measure the output voltage between the terminal of the wheel speed sensor and the body ground.
   
In order to protect the wheel speed sensor, when measuring output voltage, a 100 ? resister must be used as shown.

2.
Compare the change of the output voltage of the wheel speed sensor to the normal change of the output voltage as shown below.

V_low : 0.59V ~ 0.84V
V_high : 1.18V ~ 1.68V
Frequency range : 1 ~ 2,500Hz

    Front Wheel Speed Sensor Components and Components Location

    C..

    Rear Wheel Speed Sensor Components and Components Location

    C..

    Other information:

    Hyundai Sonata LF 2014-2019 Service Manual: Engine Control Module (ECM) Schematic Diagrams


    ECM Terminal And Input/Output signal ECM Terminal Function Connector [C500-A] Pin No.DescriptionConnected to1Injector (Cylinder #3) [High] control outputInjector (Cylinder #3)2Injector (Cylinder #4) [High] control outputInjector (Cylinder #4)3Injector (Cylinder #2) [Low] control outputInjector (Cylinder #2)4Electric Waste Gate Actuator (EWGA) DC Motor output (+)Electric Waste Gate Actuator (EWGA) 5Heated Oxygen Sensor  (HO2S) [Bank 1/Sensor 1] heater control outputHeated Oxygen Sensor  (HO2S) [Bank 1/Sensor 1]6-?7-8-?9Sensor ground Electric Waste Gate Actuator (EWGA) 10-?11-?12-13-?14Cooling fan relay [High] control outputCooling fan relay [High]15CVVT Oil Control Valve (OCV) [Bank 1/Exhaust] control outputCVVT Oil Control Valve (OCV) [Bank 1/Exhaust]16Injector (Cylinder #2) [High] control outputInjector (Cylinder #2)17Injector (Cylinder #1) [High] control outputInjector (Cylinder #1)18Injector (Cylinder #3) [Low] control outputInjector (Cylinder #3)19Electric Waste Gate Actuator (EWGA) DC Motor output (-) Electric Waste Gate Actuator (EWGA) 20Heated Oxygen Sensor  (HO2S) [Bank 1/Sensor2] heater control outputHeated Oxygen Sensor  (HO2S) [Bank 1/Sensor 2]21-?22-?23Engine Coolant Temperature Sensor (ECTS) signal inputEngine Coolant Temperature Sensor (ECTS)?24Sensor groundEngine Coolant Temperature Sensor (ECTS) 25-?26Fuel Tank Pressure Sensor (FTPS) signal inputFuel Tank Pressure Sensor (FTPS)27Fuel pump relay control output (NON-Smart key type)Fuel pump relayCanister Close Valve (CCV) control output  (Smart key type)Canister Close Valve (CCV)28-?29-30-?31Ignition coil (Cylinder #3) control outputIgnition coil (Cylinder #3)32Ignition coil (Cylinder #1) control outputIgnition coil (Cylinder #1)33Injector (Cylinder #1) [Low] control outputInjector (Cylinder #1)34Fuel Pressure Control Valve (FPCV) [High] control outputFuel Pressure Control Valve (FPCV)35ETC motor [-] control outputETC motor36-?37Knock Sensor (KS) signal inputKnock Sensor (KS)38Sensor groundKnock Sensor (KS)39-40Brake Light switch signal inputBrake switch41-42-43-?44-?45CVVT Oil Control Valve (OCV) [Bank 1/Intake] control outputCVVT Oil Control Valve (OCV) [Bank 1/Intake]46Ignition coil (Cylinder #4) control outputIgnition coil (Cylinder #4)47Ignition coil (Cylinder #2) control outputIgnition coil (Cylinder #2)48Injector (Cylinder #4) [Low] control outputInjector (Cylinder #4)49Fuel Pressure Control Valve (FPCV) [Low] control outputFuel Pressure Control Valve (FPCV)50ETC motor [+] control outputETC motor51-?52Electric Waste Gate Actuator (EWGA) Feed beck signal Electric Waste Gate Actuator (EWGA) 53Brake Test switch signal inputBrake switch54-?55-56Electric load signal input [Defrost]Alternator57Alternator COM signal outputAlternator58Engine speed signal outputCluster59Cooling fan relay [Low] control outputCooling fan relay [Low] 60- Connector [C500-K] Pin No...

    Hyundai Sonata LF 2014-2019 Service Manual: Instrument Cluster Components and Components Location


    C..

    Categories

    read more

     
    Copyright В© 2026 www.hsonatalf.org