2004 Mazda B4000 Speed Sensors

This direct replacement ABS wheel speed sensor matches the fit and function of an original equipment sensor. Made of quality materials with factory-style electrical connectors, this sensor has been designed and tested to be durable and reliable.

The ABS or Anti-Lock Brake System ECU monitors the Wheel Speed Sensors rotational speed for anti-lock brake function, stability control and traction control. The ABS sensors report the speed of all four wheels to the ECU to determine if the wheels are locking up and to help provide safer stopping. Reasons for replacement include: ABS/brake lamp illumination, no or erratic ABS operation or problems with stability and or traction control systems.

Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

The Automatic Transmission Output Shaft Speed Sensor measures the rotational speed of the transmission shafts. Output speed is monitored and relayed to the engine control module or transmission control module by either an analog or digital signal for proper shift points, speedometer operation and transmission diagnostics. Reasons for replacement include check engine light illumination, poor or erratic shifting, and no or erratic speedometer operation.