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SAE J2534-1 API is the "Recommended Practice for Microsoft Windows 32-Bit Application Programming Interface for Pass-Through Vehicle Reprogramming". Vehicle manufacturers will be required to provide a Windows software application for reprogramming their model year 2004 and beyond vehicles using a J2534-1 capable interface (e.g. CarDAQ-Plus). This standard and associated EPA requirements will give all vehicle service/repair facilities, not just dealers, the ability to perform in-field ECU software updates. If you want hands on training on J2534, an engineer from Drew Technologies teaches SAE class C0733 "Understanding and Using the SAE J2534-1 API to Access Vehicle Networks". To learn about this class, email sales@drewtech.com. In addition to reprogramming, J2534 supports diagnostics and calibration. The API provides protocol-independent functions to: read and write messages, establish periodic messages, perform filtering, and assert ECU reprogramming voltages. The PassThru (SAE J2534-1) v0404 specification can be purchased from SAE. The following pages explain DrewTech's implementation, and should be useful to end-users who want to program with our DLL:
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