Making Sense Of Steering Angle Sensor Input And Data
Measuring the position angle, rate of turn and force of the steering wheel is critical for Electronic Stability Control (ESC) systems. Scan tools call these Steering Angle Sensors (SAS) and typically display the information in degrees.
Hydro-Boost Systems: The Non-Vacuum Brake Booster
Hydro-boost brake boosters can be mysterious to the untrained technician because part-swapping will not solve some brake issues. These systems use the pressure of the power steering pump to power the brake booster. The booster is essentially a power steering unit that supplements the driver’s input.
MOOG Product Line Grows By Nearly 50 Part Numbers In April
The new MOOG parts cover more than 100 million potential service opportunities spanning a broad range of late-model North American, Asian and European passenger vehicles.
Rack And Pinion Unit Repairs
When your alignment technician inspects a vehicle’s steering linkage, it’s very easy to spot a leaking rack and pinion steering gear because the rack boots are filled with leaking oil. Similarly, a conventional recirculating ball steering gear is usually worn out when oil is leaking from its steering shaft or sector shaft seals.
GM Power Steering Noise/Leaks
Some customers may comment that their vehicle is experiencing a power steering noise/whine or fluid leak from the power steering pump, gear or high-pressure power steering hose during extremely low outdoor temperature operation.
Chrysler 200: Steering Wheel Vibration Diagnostic Procedure
If steering wheel vibration occurs in a customer’s Chrysler 200, use this tech tip to inspect the issue visually, through a road test, and by verifying wheel and tire balance.
False ABS, ESC Activation Causes And Cures
The first mass-produced anti-lock braking systems (ABS) were introduced in 1985. By 2008, almost every passenger vehicle came standard with ABS. Next, electronic stability control (ESC) became a mandated safety feature for the 2012 model year. Along with all these advancements have come false activation complaints. Solving these has been a diagnostic conundrum through the years.
Power Steering Hoses: Inspection And Repair
As part of any power steering inspection, first look at the fluid. If the fluid is grey or black, it could be a sign the inner layers of the hose have been compromised by worn, degraded or incorrect fluid. This type of discoloration is caused by rubber or metal particles in the fluid.
Steering System Calibrations
We all know that the evolution of technology in our ever-changing automotive industry translates to many gray areas when it comes to servicing new vehicle systems using updated service procedures and tools. Steering angle sensor calibration is one of those gray areas.
Power Steering Dynamics And Diagnostics
Twenty-five years ago, when the power steering failed, diagnosing the system was easy. The most difficult problem to diagnose was the “morning sickness” that plagued some vehicles when they were cold. Today, the introduction of speed sensitive steering, electric power steering and computer controls have made power steering diagnostics more demanding.
Tech Tips: Volkswagen: Noise from Front when Steering Wheel is Turned
Follow these steps to diagnose a noise when the steering wheel is turned on a Volkswagen.
Electric Power Steering Diagnostics
Electric power steering is more energy efficient than hydraulic systems and does not provide assist until it receives driver input, but there are differences in the hydraulic and electric assist that will affect the driver’s and technician’s understanding of the component and its integration into the ESC and self-park system.
