Modern Volvo and Saab vehicles are composed of complex mechanical and electronic systems that are used to support normal day-to-day operation.

The technicians at Swedish Pro Tech rely upon sophisticated computer-based diagnostic systems to assist them in their troubleshooting efforts. These systems interface with the vehicle's engine control computer (ECU) to provide real-time diagnostics and troubleshooting data, and narrow down potential causes for problems.

A brief description of these systems is given below.

The VIDA system uses a Windows PC to provide Service Manual Information, Parts Information, and Enhanced Diagnostic Functions. Using the DiCE Vehicle Interface, Diagnostic Trouble Codes (DTCs) are read from the vehicle to help guide our Technicians through diagnostic and repair procedures. The diagram below shows how the system interacts with the vehicle, and some of the information that is made available.

These software/hardware tools are useful in troubleshooting various systems in the car including:

• Engine and related accessories
• Electrical System
• Transmission
• Brakes
• Suspension and Steering
• Body and Interior (Diagnostics, design and function, repair, and spare part information)

The Tech 2 is a rugged hand-held computer designed to aid in diagnosis and repair of automotive systems with electronic controls and interfaces. The diagram below shows how the system interacts with the vehicle, and some of the information that is made available.

Onboard the device are two major software packages - TIS (Techline Information System) and SPS (Service Programming System).

Techline Information System is used for service support, and allows technicians to perform various diagnostic functions. Among them is the ability to view "snapshot" data on a computer running the Windows Operating System. This data can be analyzed in a variety of ways to determine when and where a fault may have occurred. The diagram below shows some of the data available to the technician.

The Service Programming System is used to update the files that are stored in the various control modules in the vehicle. These files contain data for things such as spark curves and fuel control. In some cases, diagnosis may call for reprogramming a module with newer information to correct a complaint.