Anti-lock Braking System(ABS) 23 B. PERATING PROCEDURE : Introduction : The below screen guides user the general settings and operating instructions of the Tata Diagnostic Software application. After opening the application, choose the appropriate vehicle platform and vehicle variant. Then click next. 1. Start Communication : Once you arrive at below screen, you can see all the ECUs present in that particular variant of the chosen vehicle platform. Click on the Start button next to ABS ECU to establish the communication between ABS ECU and your PC. Refer connection diagram below. Once the communication is established the SERVICES panel will open automatically. You can see the moving green line at the bottom as a representation of established communication between ECU and your PC as shown in below diagram. 2. Circuit Schematic : Click on the Circuit Schematic button on the toolbar to view circuit schematic. 3. Introduction Of Services Panel : SERVICES panel contains command buttons to execute various services supported by ECU. Also at the bottom of the panel, displays ECU Details, Mode of communication (e.g. Samtec USB) and Version number of the software. Click on the buttons to execute respective Service of the ECU. Use the scroll bar to view more ECU Services if available. Services can be executed from “Services” menu bar. Click on Services [Service name]. Auto hiding of SERVICES panel is provided to have bigger preview of services data. 4. ECU Identification Data and ECU Parameters: This service displays all ECU related data such as ECU Container Number, System Name, Software Version, Hardware Number, TATA Part number, VIN Number, Variant Code etc. Click on respective ECU tab to view detailed information. 5. Read DTC’s: This service reads the Diagnostic Trouble codes (DTCs) recorded in the ECU. You can see probable causes and corrective actions for a particular DTC by selecting the DTC and clicking on ‘Corrective Actions’ button. These DTCs can be saved in excel format for future reference. Select a DTC from the list and click on Corrective Actions button. This helps the technician in diagnosing the vehicle 6. Save DTC’s: The DTC’s can be saved along with technician information. Below is the screen requesting user to enter technician details. The DTC’s will be saved in .csv format The saved DTC location path will be displayed as shown above. View DTC’s: DTC files viewing window. Select file name from the list to view it in excel. 7. Clear DTC’s : The DTC’s can be cleared from the ECU using the service of Clear DTC’s tab available with Read DTC’s. While clearing the DTC’s user confirmation is needed. Also the DTC’s will get saved automatically before clearing the DTC’s from the ECU. These saved DTC’s can be viewed later as shown below. 8. Routine Tests : In this service user can able to perform the static routine tests to check the functioning and communication between sensors and ECU present. Following are the tests shown that can be performed through routine test. 9. Input Output Control : The IO control is used by the tester to actuate the input signal, internal ECU function or control an output (actuator) of an electronic system without the input signal. The response from the ECU for this service ensures proper functioning in the ECU. Follow the specified instructions to execute the test. 10. Repair Bleeding : The repair bleed service is used to perform the secondary circuit bleeding to ensure that the hydraulic system of ABS is free of bubble and Air. NOTE : For instruction on the complete procedure refer “Secondary circuit bleeding” in Regular maintenance of Brakes section.
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