Hyundai Palisade: ESP(Electronic Stability Program) System / Rear Wheel Speed Sensor

Hyundai Palisade (LX2) 2020-2024 Service Manual / Brake System / ESP(Electronic Stability Program) System / Rear Wheel Speed Sensor

Components and components location
Components
[2WD]

Hyundai Palisade. Components and components location

1. Front wheel speed sensor

[4WD]

Hyundai Palisade. Components and components location

1. Rear wheel speed sensor
 2. Rear wheel speed sensor connector

Repair procedures
Removal
Hyundai Palisade. Repair procedures   
•
Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.
(Refer to General Information - "Lift and Support Points")
[2WD]
1.
Turn the ignition switch OFF and then disconnect the negative (-) battery cable.
2.
Loosen the wheel nuts slightly.
Raise the vehicle, and make sure it is securely supported.
3.
Remove the rear wheel and tire (A) from the rear hub.
Tightening torque :
107.9 - 127.5 N.m (11.0 - 13.0 kgf.m, 79.6 - 94.0 lb-ft)
Hyundai Palisade. Repair procedures   
•
Be careful not to damage the hub bolts when removing the rear wheel and tire (A).

Hyundai Palisade. Repair procedures
4.
Remove the rear brake caliper.
(Refer to Brake System - "Rear Disc Brake")
5.
Remove the rear brake disc (A).

Hyundai Palisade. Repair procedures
6.
Disconnect the rear wheel speed sensor connector (A).

Hyundai Palisade. Repair procedures
7.
Remove the hub assembly and dust cover (A) after loosening the mounting bolts.
Tightening torque :
98.1 - 117.7 N.m (10.0 - 12.0 kgf.m, 72.3 - 86.8 lb-ft)

Hyundai Palisade. Repair procedures
[4WD]
1.
Turn the ignition switch OFF and then disconnect the negative (-) battery cable.
2.
Loosen the wheel nuts slightly.
Raise the vehicle, and make sure it is securely supported.
3.
Remove the rear wheel and tire (A) from the rear hub.
Tightening torque :
107.9 - 127.5 N.m (11.0 - 13.0 kgf.m, 79.6 - 94.0 lb-ft)
Hyundai Palisade. Repair procedures   
•
Be careful not to damage the hub bolts when removing the rear wheel and tire (A).

Hyundai Palisade. Repair procedures
4.
Remove the rear wheel guard.
(Refer to Body - "Rear Wheel Guard")
5.
Disconnect the rear wheel speed sensor connecter (A).

Hyundai Palisade. Repair procedures
6.
Remove the rear wheel speed sensor cable bracket mounting bolt (A).
Tightening torque :
19.6 - 29.4N.m (2.0 - 3.0 kgf.m, 14.5 - 21.7 lb-ft)

Hyundai Palisade. Repair procedures
7.
Disconnect the EPB actuator connector (A).

Hyundai Palisade. Repair procedures
8.
Remove the rear wheel speed sensor (A) after loosening the mounting bolt.
Tightening torque :
6.9 - 10.8 N.m (0.7 - 1.1 kgf.m, 5.1 - 8.0 lb-ft)

Hyundai Palisade. Repair procedures
Replacement
1.
Remove the rear wheel hub bearing assembly.
(Refer to Driveshaft and Axle - "Rear Hub - Carrier")
2.
Fix the rear hub bearing assembly (A) on the vise.
Hyundai Palisade. Repair procedures   
•
When fixing on the vise, use a cloth not to be damaged the hub bearing assembly.
•
Be careful if excessive force for fixing on the vise may damage the hub bearing assembly.

Hyundai Palisade. Repair procedures
3.
Check the direction of the sensor cap (A).

Hyundai Palisade. Repair procedures
4.
Remove the sensor cap by hammering on a gap between sensor cap and hub bearing assembly using a scraper (A).

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
•
In order to widen the gap little by little, hammering around the bearing cap 10-20 times.

Hyundai Palisade. Repair procedures
•
When removing the sensor cap, remove it in a straight direction not to damage the tone wheel or encoder.

Hyundai Palisade. Repair procedures
5.
Check if distorted or damaged the tone wheel or encoder (A).

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
•
Check if damaged the tone wheel or encoder after removing the sensor cap and replace the hub bearing if it was deformed.
•
If the tone wheel is deformed, it may trigger the MIL ON or other problems.

Hyundai Palisade. Repair procedures
6.
Position the sensor cap to the same direction of sensor cap connector (A) as you checked before removing.

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
•
Before installing the sensor cap, do not let any foreign material and contaminant into the hub bearing (A) assembly.

Hyundai Palisade. Repair procedures
7.
Install the sensor cap (A) with the special service tool (09527-AL500).

Hyundai Palisade. Repair procedures

Hyundai Palisade. Repair procedures   
•
Hammer until there is no gap between the SST and hub bearing assembly and install the sensor cap.

Hyundai Palisade. Repair procedures
•
Be careful not to tilt to one side when installing the sensor cap as it may damage the tone wheel or encoder.
•
When sensor cap installation, hammering it until the gap disappeared between the sensor cap and hub bearing assembly.

Hyundai Palisade. Repair procedures
8.
Install the rear wheel hub bearing assembly.
(Refer to Driveshaft and Axle - "Rear Hub - Carrier")
Installation
1.
To install, reverse the removal procedure.
Inspection
1.
Measure the output voltage between the terminal of the wheel speed sensor and the body ground.
Hyundai Palisade. Repair procedures   
•
In order to protect the wheel speed sensor, when measuring output voltage, a 100Ω resister must be used as shown.

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

Hyundai Palisade. Repair procedures

V_low : 0.59V - 0.84V
V_high : 1.18V - 1.68V
Frequency range : 1 - 2,000 Hz

    Front Wheel Speed Sensor

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