Central MO Chapter Meeting: Ramp Up Your Diagnostics
Ramp Up Your Diagnostics
Presented by Kevin Leiby
Utilizing your equipment to its fullest capabilities is the key to fast and accurate diagnosis. Couple your lab scope with a current probe for starting & charging system analysis, fuel injection, ignition, transmission, emission control, or any other circuit or component analysis. Couple your scope with a pressure transducer to find mechanical engine problems, cam, and variable valve timing issues. Low contributing cylinder(s) confirm ring and piston condition by inspecting crankcase pressure waveform. Ignition misfire using exhaust pulse train. Fuel Injection delivery confirmation utilizing the first look or comparable pressure transducers.
Using a scope to monitor circuit voltage along with an amp probe to rapidly check circuit integrity at a component rather than having to unplug the PCM connector and ohm test the circuit between the component and control device. Test the circuit live under the conditions the circuit operates. Dynamic tests as opposed to static testing gives us much more detail and we also have the ability to test the drivers within the controller.