Kia Cadenza YG: ESC(Electronic Stability Control) System / Rear Wheel Speed Sensor Repair procedures

Kia Cadenza YG 2016-2021 Service Manual / Brake System / ESC(Electronic Stability Control) System / Rear Wheel Speed Sensor Repair procedures

Removal
1.
Remove the rear wheel and tire.
Tightening torque:
88.3 ~ 107.9 N.m (9.0 ~ 11.0 kgf.m, 65.1 ~ 79.6 lb-ft)
2.
Remove the rear wheel speed sensor mounting bolt (A).
Tightening torque:
6.9 ~ 9.8 N.m (0.7 ~ 1.0 kgf.m, 5.8 ~ 7.2 lb-ft)

3.
Remove the rear seat back.
(Refer to the Body - "Seat")
4.
Disconnect the rear wheel speed sensor connector.
5.
Installation is the reverse of removal.
   
Install the rear sensor after lubricating the O-ring of sensor with the assembly fluid(RAREMAX AF-1).
When inserting the sensor, take care the O-ring not to be damaged.
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

    Components 1. Rear wheel speed sensor 2. Rear wheel speed sensor cable

    Description When the vehicle is turning with respect to a vertical axis the yaw rate sensor detects the yaw rate electroniclly by the vibration change of plate fork inside the yaw rate sensor.

    Other information:

    Kia Cadenza YG 2016-2021 Service Manual: Description and Operation

    Description BSD is a system that uses two magnetic wave radar sensors attached on the rear bumper to measure the distance from the following vehicles and provides the sensing and (visual and auditory) alarm of any vehicle coming into the blind spot.

    Kia Cadenza YG 2016-2021 Service Manual: Blind Spot Detection Unit Repair procedures

    Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the rear bumper. (Refer to Body - "Rear Bumper") 3. Remove the BSD unit (A) after loosening the mounting screws.     Take care not to separate the bracket from rear bumper when removing the BSD sensor.

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