: The required response times for an ECU to acknowledge a tester's request to ensure reliable data flow. 3. Diagnostic Test Modes
The document categorizes diagnostics into several "Modes," each serving a unique purpose: eys157.part2.rar
: Request emission-related diagnostic trouble codes (stored DTCs). : The required response times for an ECU
: Request vehicle information, such as the VIN (Vehicle Identification Number) and Calibration IDs. 4. Reference Standards eys157.part2.rar