An ignition coil takes voltage from the battery and multiplies it to create a spark at the spark plugs, which in turn ignites the engine. Cars have been using some form of the coil ignition system ...

With ignition timing and fuel management in the hands of a system "brain," known as an Electronic Control Module (ECM), ignition and fuel system variables can be more precisely controlled to meet ...

A diagnosis of any electrical system, whether it is 12 or 24 volts, must include two key elements. First, you must test the complete circuit. Second, you must understand how that circuit works. One of ...