Enhanced Diagnostic Tool (EDT)
As automotive technology continues to evolve, ATI remains steadfast in its commitment to delivering cutting-edge solutions that drive excellence in control system calibration.
As such, ATI's Enhanced Diagnostic Tool (EDT) is a game-changer in the realm of diagnostic calibration and acquisition, which propels the capabilities of its renowned VISION platform to new heights. EDT introduces a host of features that augment VISION's diagnostic prowess, most notably incorporating ISO-14229 services.
Unveiling the Power of EDT:
EDT enhances VISION's capabilities by seamlessly integrating support for legislated OBD functionality and advanced features found in the World-Wide Harmonized On-Board Diagnostics (WWH-OBD) standard, including full control of DTCs, PIDs and DIDs.
The Interconnection of Diagnostic Components:
To explain further, vehicle diagnostics hinge on several key components: Diagnostic Trouble Codes (DTCs), Parameter Identifiers (PIDs), and Data Identifiers (DIDs). Each plays a pivotal role in diagnosing and monitoring vehicle systems.
- DTCs: These codes, triggered by the vehicle's OBD system, signify detected malfunctions or abnormalities within specific systems or components. Standardized across the automotive industry, DTCs offer technicians valuable insights for diagnosis and repair.
- PIDs: Representing specific parameters or data points retrievable from the vehicle's onboard computer system, PIDs encompass crucial information such as engine RPM, coolant temperature, and more. Accessible via numerical codes, PIDs aid in monitoring, analysis, and troubleshooting.
- DIDs: Similar to PIDs, DIDs provide access to specific data sets defined by vehicle manufacturers or standardization organizations. Offering detailed information about vehicle systems, DIDs are instrumental in advanced diagnostic procedures requiring comprehensive data access.
The Diagnostic Process Unveiled:
The diagnostic process unfolds with UDS, furnishing a standardized protocol for diagnostic communication. Each service, delineated by a unique numerical or hexadecimal code, serves a distinct purpose in diagnosing, testing, configuring, or maintaining vehicle systems.
For instance, service 0x2A within the UDS protocol corresponds to reading DTCs stored in the ECU's memory—a critical step in identifying potential issues within the vehicle.
Understanding the Core Function of EDT:
At its core EDT comprises a set of functions accessible via an API, facilitating the exchange and calibration of diagnostic data with electronic control unit (ECU) nodes through the diagnostic port. The device operates using ISO 15765 as its Controller Area Network (CAN) protocol, enabling seamless access to OBD-II and WWH-OBD services via Unified Diagnostic Services (UDS). This realizes three key benefits:
- Productivity – EDT enables all diagnostics calibration and validation activity to remain within the VISION eco-system, removing the need to juggle with 3rd party software.
- Efficiency – EDT makes it easier to configure diagnostics activity on production PCM’s.
- Versatility – EDT’s customization features enable clients to configure diagnostics functions to suit rapidly adapting workflows.
In Detail - How does EDT boost VISION’s Diagnostics Capabilities?
EDT’s great advantage is that it combines measurement, calibration AND diagnostics data into a single time-aligned recording and offers full integration with VISION’s Data Item Manager, screen controls, and recorders. Furthermore, these recordings can be triggered based on diagnostics data.
The EDT platform offers a user-friendly set up of UDS data collection via CAN from a production ECU, while enabling the auto-detection of multiple ECU nodes. The toolkit also offers user configurable manual overrides for non-standard Req/Resp ID pairings, plus the ability to read live PIDs, INFOTYPEs, Monitors, and request freeze-frame data.
EDT users can request and clear DTCs (Diagnostic Trouble Codes) with trigger event expressions and generate ‘all-modes’ snapshot reports. In addition, EDT easily enables the access of OEM/user defined UDS DIDs (service 0x22) from ODX and MDX files and supports UDS Periodic Transmission (service 0x2A) recording DIDs.
Via VISION’s COM API, EDT offers extensive service and sub-function access through XML-based Diagnostics, backed with scripting capabilities that enable powerful customize workflows – for example UDS fault insertion.
Finally, EDT includes rapid packet 0x2A Periodic Transmission service support that enhances VISION’s potential use as an end of line / field service diagnostics tool.
Conclusion:
