“Diagnostic tools have had to keep pace by reading data on all channels, outputting that data in an easily understood format, and simultaneously diagnosing all truck components,” Hedman said. As Noregon’s Hedman points out, there was just a single data bus on a heavy-duty truck in the early days of diagnostics.
Now it feels like we’re kicking into hyperdrive over the next decade.” Keeping pace with current technologyĬommercial vehicles have already become technologically advanced.
“This industry has changed so significantly over the 30 years I have been in it. “We are at the precipice of a world with automated vehicles, including commercial trucks,” noted Chris Freeman, director of sales/training HD at Autel, a developer of intelligent diagnostics, detection, and analysis systems. Now the heavy-duty industry is beginning to see new technologies that are prompting additional diagnostic needs. The fully functional diagnostic tools of today can also set speeds, modify PTOs, program parameters, and even multiplex systems to allow hardwire programming. Technicians also need information and technical specs like troubleshooting trees, wiring diagrams, component replacement guides, and so on.”
#Semi truck ecu diagnostic equipment code
“But as a result of that added complexity, being able to read the code is not enough. “It is really impressive how diagnostics has grown,” Gattamorta said. “That requires tools capable of helping technicians diagnose issues - opposed to simply providing basic fault code data.” “As the number of ECUs on trucks has increased, the amount of complexity and data has also increased,” Hedman said. Mixed fleet technicians needed a more efficient diagnostics solution. In the past, each component acted on its own and could be diagnosed in a siloed manner.” This increasing number of ECUs required diagnostic technology that could help technicians understand the relationship between multiple components or systems. “In the mid-1990s, the typical truck contained fewer than two ECUs,” said Jason Hedman, product manager at Noregon, a provider of diagnostic, repair, and data analytic solutions. The increased presence of electronic control units (ECUs) has driven the need for more robust diagnostics functionality. You can even adjust the heater on the rearview mirrors and calibrate the AC.” Now in 2020, everything seems to be electronic.
“When you make the jump to around 2007, that’s when everything crazy with aftertreatment systems due to the EPA and greenhouse gas norms. “When the transition from mechanical to electronic started to take place, sensors started showing up on commercial vehicles,” explained Bruno Gattamorta, vice president of sales and marketing for Cojali USA, a manufacturer of technology and diagnostic tools. Now commercial vehicles can even be repaired remotely in some instances. Eventually, technicians came to rely on detailed fault descriptions and seamless links to online repair information. In the early days, technicians had to rely on dash lamp flash codes and paper service manuals. And much like the World Wide Web, diagnostics have made great strides over the past three decades. Heavy-duty diagnostics have been around about as long as the internet.
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