Kia Sportage: ESP(Electronic Stability Program) System / Rear Wheel Speed Sensor Repair procedures

Kia Sportage QL (2015-2021) Service Manual / Brake System / ESP(Electronic Stability Program) System / Rear Wheel Speed Sensor Repair procedures

Removal
1.
Remove the front wheel and tire (A) from 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 to the hub bolts when removing the front wheel and tire (A).
2.
Disconnect the rear wheel speed sensor connector (A). [2WD only]

3.
Remove the wheel speed sensor cable bracket(B). [4WD only]
Tightening torque:
6.9 - 10.8 N·m (0.7 - 1.1 kgf·m, 5.1 - 8.0 lb·ft)

4.
Remove the rear wheel speed sensor mounting bolt (A). [4WD only]
Tightening torque:
6.9 - 10.8 N·m (0.7 - 1.1 kgf·m, 5.1 - 7.6 lb·ft)

5.
Loosen the trailing arm mounting nuts(A), and then remove the trailing arm.
Tightening torque :
98.1 - 117.7 N·m (10.0 - 12.0 kgf·m, 72.3 - 86.6 lb·ft)

6.
Remove the wheel speed sensor cable by loonsening the bolt(A).
Tightening torque :
8.8 - 13.7 N·m (0.9 - 1.4 kgf·m, 6.5 - 10.1 lb·ft)

7.
Remove the Luggage side trim.
(Refer to Body - "Trunk trim")
8.
Remove the wheel speed sensor cable braket bolt(A).
Tightening torque:
19.6 - 29.4 N·m (2.0 - 3.0 kgf·m, 14.5 - 21.7 lb·ft)

9.
Disconnect the rear wheel speed sensor connector and then remove the front wheel speed sensor.
10.
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 Ω 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
Rear Wheel Speed Sensor Components and components location
Components [2WD] 1. Front wheel speed sensor cable 2. Front wheel speed sensor connector [4WD] 1. Fron ...

Assist Emergency Braking(AEB) System
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