4. PUTTING THE TRACTOR INTO SERVICE 4.1 INTRODUCTION 4. PUTTING THE TRACTOR INTO SERVICE 4.1 INTRODUCTION This chapter contains all the information required to establish or restore correct operation of the tractor's various electronic systems. Whenever an electronic control unit of the tractor is changed or a calibration-sensitive electronic component replaced, the tractor must be put into service as if from new. The necessary procedures must be carried out by a skilled technician, who in turn must follow the instructions in the man- ual precisely.
4.2 RENEWAL OF THE ENGINE CONTROL UNIT NOTE If possible, before renewing the engine control unit, the technician should read the program of the old control unit and save it to a file. If the control unit is faulty and it is not possible to read the program, contact Technical Assistance and ask for the engine configuration file (quoting the engine serial number, which appears on the nameplate of the control unit and on the engine data plate) and proceed to program the new unit using this file. The accelerator pedal and hand throttle can now be calibrated, and the maximum ground speed configured.
4.2.1 READING AND SAVING DATA 1 - Connect a portable computer with the SERDIA pro- gram installed (for details see «Connection of portable computer with "SERDIA" software to the engine con- trol unit»). 2 - Turn the starter key to the “ I ” (ON) position and start the SERDIA program. 3 - From the “PARAMETER” menu, select the option “OVERALL PROGRAMMING”. 4 - Click on “ECU -> file” and save the data to a floppy disk or to the computer hard disk (c:\; d:\). NOTE Make certain that the file has been saved. Files are named automatically in the following way: 0044444.hex where the numbers “44444” correspond to the serial number of the engine. 20-21