Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1.0 Date: 30/11/2019 Author: ERC Page 479 of 610 Copyright by TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without our consent 2.Preliminary Check 1. Check ECM is communicating with TML diagnostic tool or not. 2. If NO, then check for continuity in the vehicle ODB connector pin no. 8 & 9 and EMS side vehicle wiring harness connector CAN_H (pin B81) and CAN_L ( pin B80). 3. There should be continuity between below pins in the vehicle side wiring harness. IPC CAN_H (pin. 6) to ECM CAN_H (Pin B81) and IPC CAN_L (pin. 5) to ECM CAN_L (Pin B80) 4. Read IVN DTCs in ECM in IGN ON condition with TML diagnostic tool.
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