Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2021 Mazda 3 BaseFACTORY OEM SERVICE PROCEDURE

Front Abs Wheel-Speed Sensor Removal/Installation: Notes

Replacement Part

Wiring harness clip

Quantity: 3

Location of use: Front ABS wheel-speed sensor

NOTE:

If the front ABS wheel-speed sensor wiring harness clips are removed from the vehicle body, they cannot be reused. Only remove the wiring harness clips when it is necessary to remove the front ABS wheel-speed sensor wiring harness.

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .)
Remove the wheel and tire. (See WHEEL AND TIRE REMOVAL/INSTALLATION .)
Remove in the order indicated in the table.
Install in the reverse order of removal.
After installation, verify that there is no twisting in the front ABS wheel-speed sensor.

Fig 1: Front ABS Wheel-Speed Sensor Components With Torque Specification

Courtesy of MAZDA MOTORS CORP.

PART DESCRIPTION

1	Connector (See CONNECTOR DISCONNECTION NOTE .)
2	Bolt
3	Front ABS wheel-speed sensor (See Front ABS Wheel-speed Sensor Wiring Harness and Clip Disconnection Note .)

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.

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