While principles of electricity work well in the classroom, the application to reality can sometimes be hard to see. Basic principles of electricity are used in a multitude of diagnostic applications whether you realize it or not.
Intelligent restraints systems are able to adjust their activity based on the severity of an accident and an entire book could be written on that subject alone, but this article will focus on the systems that are installed to try to avoid an accident in the first place.
Remember, the testing methods we used in the past may not be appropriate for use on vehicles today. It is our responsibility to know how we are supposed to diagnose the systems we are taking into the shop. Are you accepting that responsibility?
Vehicle manufacturers have moved to what is commonly known as the air/fuel ratio sensor, or AFS. With the change in technology has come a steep increase in the price of the replacement part, which means you need know how to diagnose sensor and air/fuel related faults.
Today’s power distribution centers do a whole lot more than provide a fused pathway. They need to provide power to an innumerable amount of onboard electronic devices and at the same time they have to do the job with less weight.
Aside from air ride systems and electronically controlled sway bar equipped vehicles, if we keep our discussion to only electronically controlled shocks and struts, the systems really fall only into three basic categories.
While there are still late model vehicles out there sporting the basic gauge package, sender-driven magnetic gauges are as archaic now as bimetal units were 20 years ago. Just about every instrument cluster is computerized.
Diagnosing and repairing diesel no-starts can be very profitable if you know what to look for. The rules have changed in the last few years so it pays to know what to expect on a newer diesel vehicle with a no-start condition.
One of the most difficult things to diagnose in the automotive electronics world is electrical noise. There are more ways to cause noise, and noise is often classified as different things: distortion, interference, jamming, etc. Just to make it easier to talk about, we will just call it all noise.
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