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

Removal

1.	Loosen the wheel nuts slightly. Raise the vehicle, and make sure it is securely supported.

Remove the front wheel and tire (A) from the front hub.

Tightening torque :

107.9 - 127.5 N.m (11.0 - 13.0 kgf.m, 79.6 - 94.0 lb-ft)

•	Be careful not to damage the hub bolts when removing the front wheel and tire (A).

Loosen the bolt and then remove the wheel speed sensor (A).

Tightening torque :

7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft)

Loosen the mounting holt and then remove the brake hose from the strut assembly.

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 guard. (Refer to Body - "Front Wheel Guard")

Disconnect the connector after removing the cable bracket mouniting bolt and fixed clip.

Tightening torque :

8.8 - 13.7 N.m (0.9 - 1.4 kgf.m, 6.5 - 10.1 lb-ft)

7.	Installation in the reverse of removal.

Inspection

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 100Ω resister must be used as shown.

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 - 2,500 Hz

C..

C..

D..

S..

Categories