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.
The noise may be originating from the front lower control arm front bushing. Here’s how to correct it.
One mistake to avoid when replacing struts is reusing the bearing plates or upper mounts.
When performing a calibration, you are adjusting the connection between the sensor, vehicle and surroundings.
An alignment is usually called for prior to ADAS calibrations. This video is sponsored by Hunter Engineering.
As a vehicle ages, the J2534 programming becomes even more important to the vehicle’s ADAS operation.
Air ride and active shocks and struts will eventually fail – succumbing to either damage to or dry rot of the air spring.