Part of the Yanmar Repair Manuals.
All 64 pages of this Yanmar Engine Diagnostic Service Tool (YEDST) Diagnostic Manual are built for one job: connecting to TNV series engines and pulling real diagnostic data through the YEDST software. You get a complete fault code section with Active and Logged Diagnostic Trouble Codes, freeze frame data with stored snapshots and trend graphs, and a full diagnostic test suite covering analog input/output, digital I/O, active control, and hysteresis measurement. ECU Identification maps every analog and digital channel assignment with full ECU ID data, and the System Installation section walks you through configuration, calibration, and tuning. Set your data monitor to 0.1-second sampling before a diagnostic session, and verify CAN communication is locked at 250k for any marine application. Stop chasing a fault code with guesswork. Bookmarked by section so you tap straight to Active DTCs or calibration without scrolling.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Overview | 3 | |
| Installing the Software | 4-5 | Log in As an Administrator, Run the Setup.exe File, Customer Information, Select Installation Folder, Confirm Installation, Installation Complete |
| Description of the System | 6 | Program, Authority and Password Management |
| Starting/Quitting the Software | 7-12 | Starting the Software (Connecting the System Components, Turning on the Devices, Installing the Usb Driver, Startup Screen), Quitting the Software, Troubleshooting |
| Screen Components | 13-17 | Basic Screen (Standard Tool Bar, Operation Tool Bar, Function Select Tool Bar) |
| Freeze Frame Data | 19-21 | Stored Data, Trend Graph |
| Diagnostic Test | 22-30 | Analog/Pulse Input/Output Test, Digital Input Test, Digital Output Test, Active Control |
| Data Logging | 31-38 | Data Monitor, Stored Data, Trend Graph |
| Historical Data | 39-40 | Lifetime Data, RPM-Load Profile |
| ECU Identification | 41-43 | Analog Channels, Digital Channels, ECU ID Information |
| System Installation | 44-52 | Configuration, Calibration, Tuning |
| Setting the Graphs | 53-54 | Basic Operations in Analog Mode, Saving and Loading Setting Values |
| Graph Function | 55-58 | Setting the Graphs (Basic Operations in Analog Mode, Saving and Loading Setting Values, Digital Mode), Graph Operations |
| Print Function | 59 | |
| Tool Functions | 60-62 | System Setting, User Management, Changing a Password |
| Glossary | 63 | Block Size, Controller Area Network, Comma Separated Value, Destination Address, Diagnostic Trouble Code, Engine Control Unit |
| References | 64 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| YANMAR Engine Diagnostic Service Tool (YEDST) | ||
| Display resolution | 1024 x 768 | p. 3 |
| Communication IF box | ||
| Communication IF box Firmware version | 02.15 | p. 3 |
| CAN communication | ||
| CAN communication speed (marine applications) | 250k | p. 11 |
| CAN Priority standard value | 6 | p. 60 |
| Engine | ||
| Engine Rated RPM | 2000.00 r/min | p. 18 |
| Data Monitor | ||
| Minimum data sampling interval | 0.1 second | p. 33 |
| Sampling frequency (Intermittence mode) | 100 msec | p. 35 |
| Graph Function | ||
| Number of graph screens available | 2 | p. 55 |
| CAN | ||
| CAN Bit Sample Point | 80 | p. 60 |
| Message timing | ||
| Message timing P2CAN Max | 50 | p. 60 |
