Look no further, If you commit to this and REALLY study it, you WILL be prepared for this ASE test. The questions in here are not the same as on the test, BUT they are written like ASE questions, and the study material in this book, will preprae you for the test. DOn't get me wrong, if you know nothing about HVAC, this book will probably not be your salvation. BUT if you already do this type of work and have a decent understanding of AC, this book will probably give you the edge to pass the test. Assuming, you Really read it, study it, and understand what you are reading.
Passing an ASE test is more about understanding the way these systems work, not memorization. If you don't understand the principles of sutomotive systems, you will never pass an ASE test.