Scan Tools & Scopes for Wheel Bearing Diagnostics

Scan Tools & Scopes for Wheel Bearing Diagnostics

The only way to diagnose the sensor and circuit is with a scan tool or scope.

When wheel speed sensors (WSS) were first installed on cars and trucks, they were typically mounted on the CV joints or differentials. These sensors were not the most accurate and didn’t start working until the vehicle reached 5 to 7 mph. These are called passive wheel speed sensors. 

As vehicles and ABS systems advanced, the wheel speed sensors moved to the knuckles and wheel bearings. These advanced sensors can detect small amounts of movement in the wheels when the vehicle is barely moving. They are called active sensors. But, with active sensors, the inspection and diagnostic process is more challenging. Why? Because the encoder ring is moved to the wheel bearing inboard seal, and the sensor is moved to the knuckle. The only way to diagnose the sensor and circuit is with a scan tool or scope. 

Read the whole article from Brake & Front End, our sister publicaton, HERE.

You May Also Like

Topology and Your Scan Tool

Topology, the term used to describe the design, layout and behavior of a serial databus configuration, influences how you access modules with your scan tool.

Topology and Your Scan Tool

When you use your scan tool to look at live data from an ADAS or other module, have you ever asked yourself how “live” the data really is and the path it took to be displayed as a value on your scan tool’s screen? The data you are looking at might be processed by one module, shared by another module and go through a gateway module to talk to your scan tool. How does it do it? Serial data buses.

The Evolution of Impact Wrench Technology

The hardest-working tool in the automotive industry has seen its share of updates and evolutions.

The Evolution of Impact Wrench Technology
Unlocking Service Drive Revenue: The Critical Role of Technician Inspections

The true potential of service consulting lies in recognizing the nuanced art of quality inspections and leveraging it to drive success for both advisors and technicians.

Unlocking Service Drive Revenue: The Critical Role of Technician Inspections
Addressing the Technician Shortage with Innovative Training Solutions

Drawing on extensive industry experience, the team at DealerPRO Training has developed a program that exposes technicians to future career opportunities in fixed operations as well as executive positions.

DealerPRO training
Dealership GMs Need Fewer Worries; Start Here: Recon and Appraisal Integrity

How do you manage margin compression? With a focus on predictable outcomes.

Dealership GMs Need Fewer Worries; Start Here: Recon and Appraisal Integrity

Other Posts

Enhancing Accessory Offerings and Car Care Products in Service Centers

By expanding product offerings, identifying top-selling items and leveraging private-label products, dealerships can create value for customers, drive revenue growth and strengthen their competitive position in the automotive industry.

Enhancing Accessory Offerings and Car Care Products in Service Centers
Rislone’s DEF Crystal Clean Helps Get Customers Out of Limp Mode

New product removes damaging crystals from SCR systems and clears P20EE codes.

New Rislone DEF Crystal Clean™ Diesel DEF & SCR Emissions System Cleaner scrubs away crystal contaminants from the selective catalytic reduction (SCR) systems of diesel cars, trucks, and SUVs to cost-effectively restore power and performance.
Ford Dealers, Ford Fund Invest $2 Million To Train Future Auto Techs

The Ford Auto Tech Scholarship will grant 400 need-based awards to current or future students enrolled in post-secondary auto programs.

Ford dealers and Ford Fund, the philanthropic arm of Ford Motor Company, are investing $2 million in scholarship funding in 10 regions to help students pursue careers as automotive technicians.
USO, UTI Partner to Support Service Members’ Career Transitions

A highlight of the collaboration includes networking support with industry leaders to help facilitate training and job placement.

USO, UTI Partner to Support Service Members' Career Transitions