Andrew Markel discusses wheel speed sensors, and how they determine the turning state of a vehicle. Sponsored by BCA Bearings.
If one of these sensors is replaced, it must be calibrated after it is installed.
Ride-height sensors not only measure the position of the suspension, but also the rate of movement. They are supplied with a voltage of around 5 volts. The signal voltage is changed as a magnet moves past a coil. Most sensors have three wires — ground, power and signal.
Internally, it is difficult to damage one of these sensors. Externally, the linkage that connects the sensor to the suspension arm can also be damaged. The connector can be damaged and cause a short or open and a code will be set. If one of these sensors is replaced, it must be calibrated after it is installed.
Replacement units are available from sources other than the dealer.
The “Edge Code” can tell you information about a brake pad’s friction material.
Knowing why the adjustment is required is critical to performing the total alignment.
The question customers fail to ask is, what is “best” for their vehicle?
All wheel speed sensor codes are just the starting points of a diagnosis and not a reason to order a part.
The key to understanding the logic of air ride systems is using service information.
It is important for the ABS/ESC module to receive two signals to verify the steering wheel’s position.
The source of the complaint can be the angles, electronics or tires.
