Hyundai Elantra: ABS(Anti-Lock Brake System) / Front Wheel Speed Sensor
Components and components location

1. Front wheel speed sensor
| 2. Front wheel speed sensor connector
|
Repair procedures
1. | Turn ignition switch OFF and 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. •
| Be careful not to damage the hub bolts when removing the front wheel and tire (A). |
|

|
4. | Remove the front wheel guard. (Refer to Body - "Front Wheel Guard") |
5. | Disconnect the front wheel speed sensor connector (A) and then remove the fixing clip (B). 
|
6. | Remove the front wheel speed sensor cable braket bolt (A). Tightening torque : 7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft) |

|
7. | Remove the wheel speed sensor (A) from the Knuckle after loosening the mounting bolt. Tightening torque : 7.8 - 11.8 N.m (0.8 - 1.2 kgf.m, 5.8 - 8.7 lb-ft) |

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1. | To install, reverse the removal procedure. |
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 100Ω 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 : 0.03 - 3,000 Hz |
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Components and components location
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Components and components location
Components[Rear torsion beam disc brake type]1. Rear wheel speed sensor2. Rear wheel speed sensor connector[Rear multi link disc brake type]1...
Other information:
Engine Oil and Filter
The engine oil and filter should be
changed at the intervals specified in the
maintenance schedule. If the vehicle
is being driven in severe conditions,
more frequent oil and filter changes are
required.
Drive Belts
Inspect all drive belts for evidence
of cuts, cracks, excessive wear or oil
saturation and replace if necessary...
Specifications
Description
Specifications
Limit
General
TypeIn-line, DOHC Number of cylinders4 Bore75.60 mm (2.9764 in) Stroke89...