We have a solid background in electrical testing and repair on vehicle systems. Using state of the art testing methods involving both scope diagnosis and bypass testing, we can quite often prove a fault without the need for guessing.
These testing procedure allow us to actually see what is going on with components and understand if they are working correctly. Where possible we will simulate the faulty component (Bypass it) to trick the system in to thinking the fault is not present. This method when deployed correctly allows us to prove the fault exists in that component and gives us the ability to accurately fix the problem first time.
When it is not possible to simulate a required signal or sensor we use evidence based testing as part of a test plan to eliminate potential causes until we trace the fault to the root Cause.