• Truck scan tools help you isolate what's wrong with your trucktruck image by Greg Pickens from Fotolia.com
  
  If you own a truck, then you need the right scan tool to help you figure out what is wrong with your vehicle. A scan tool runs diagnostics on your system, and it also reads the diagnostic trouble codes (DTCs), which helps you determine which system is either failing or not working properly on your truck. These scan tools also communicate with your on-board diagnostic (OBD) system, which is the computer system in your truck. While these tools are expensive up-front, it saves you money by eliminating the need to run to the mechanic every time that you have a problem with your truck.
  
  

MD200

• The MD200 Truck Diagnostic Scan Tool is a multifunction tool that allows you to run scans on your system, log data and run diagnostic tests on communication links. The scanner captures DTCs, and it also records snapshot information for up to 30 seconds. A vehicle snapshot helps you capture data about how your vehicle is functioning at a particular point in time. Use the communications box to help your vehicle's OBD system communicate with your computer, and you can transfer data directly onto your computer. Other features of this tool include an ability to record up to 30 minutes of data, and can capture vehicle data even from the road. For a product price quote, you have to contact the company
  
  

Pro-Link iQ

• This is a NEXIQ Technologies scan tool for heavy-duty trucks, and this hand-held scan tool runs diagnostic scans on different systems, including transmission, engine and the anti-lock brake system (ABS). It is compatible with different original equipment manufacturer (OEM) systems, and it allows you to run tests on your system to determine whether or not it is working properly. You can clear DTCs or reprogram systems, and you can graph data. This tool includes an 8.4-inch touch screen and connects to your computer via a universal serial bus (USB) cable, and it captures vehicle data in real time. As of 2010, this product costs between $2,000 and $2,200.
  
  

VDA

• The Vehicle Diagnostic Assistant is a scan tool that helps you run tests on truck OEM systems, including transmissions, ABS and engines. The program uses a graphical user interface (GUI), which allows you to run commands using radio buttons and check boxes as opposed to writing code, and it also features a wizard to walk you through the diagnostic procedures. This system is customizable based on your needs, and it comes with a Panasonic Toughbook and software. For a product price quote, you need to contact the company.