TATA BSVI Gasoline_Bifuel Program – EMS ECU Bosch DTC Troubleshooting Service Manual Version: 2.6 Date: 5-10-2023 Prepared By: Pradip Shimpi Checked By: Yeshwant Jadhav Approved By: Sanjeev M. Document Part No: 2921 02 xxx xxxx Page: 1693 of 1720 Copyright © TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author. U0198-08 : Timeout for Telematics1 frame (RESS requirement) Overview: ISO Code U0198-08 Customer Symptom RESS Feature not working. Fault Effects (On Vehicle) RESS Feature will be disabled Lamp Status (If Any) NO Lamp Fault Detection Condition TELEMATICS1 Frame is not received within the stipulated time then node timeout will be triggered Normal Operating Condition ECU and TELEMATICS1 are communicating properly. Probable Trouble Area CAN messages from TELEMATICS1 are not received properly by the ECU; Battery low voltage or high voltage ; should check the CAN line is connected to TELEMATICS1 ECU or NOT Healing Condition TELEMATICS1 Frame should be received within the frame cycle time Fault permanent deletion 1. Scan tool Service 14. 2. Stack Over Flow. 3. 40 warm up cycles. 4. ECU Flashing. 5. ECU power fail Component Details: NA Preliminary Checks: 1. Check ECM is communicating with TML diagnostic DTC or not. 2. If not, check for short conditions between CAN HIGH-CAN LOW, CAN HIGH-GND, CAN LOW-GND, CAN HIGH-Vbatt and CAN LOW -Vbatt at ECM vehicle side wiring harness. There should not be any short Circuit conditions. 3. There should be continuity between vehicle side wiring harness with following pins. TCM CAN HIGH to ECM CAN HIGH and TCM CAN LOW to ECM CAN LOW ECM CAN_H (Vehicle side connector) to TCM CAN_H ECM CAN_L (Vehicle side connector) to TCM CAN_L Continuity should be there. 4. Read IVN DTCs in ECM after IGN ON condition with TML diagnostic tool. 5. Check with the CAN channel, which will affect communication 6. Check for Loose/Damaged connections 7. Check for Pin back out from ECU connector
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