When its use is called for by the various trouble trees in the Service Manual, the Tech 1 follows a logical, step-by-step strategy for diagnostics. Once preliminary information is entered, the Tech 1 offers a variety of options, depending on the kind of information is required. Understanding where you are within the Tech 1’s hierarchy is important for understanding what kind of related testing can be done as well as what kind of information is being produced. The reference section of this book contains tree type charts of Tech 1 screen displays.
