Vehicle Platform: All ECU Name: Telematics Control Unit (TCU) DTC Troubleshooting Data Version: 1.12 Date: 02-06-2022 Author: TCM COC Page: 3 of 150 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. Contents Change History ........................................................................................................................................................................ 2 IVN DTCs............................................................................................................................................................................... 6 CAN Bus Architecture .......................................................................................................................................................... 7 CAN Wiring Harness Diagram............................................................................................................................................ 8 Abbreviation .......................................................................................................................................................................... 9 Pin Diagram and Description for Gen2 Telematics ....................................................................................................... 10 Pin Diagram and Description for Gen2i & Gen2i+ Telematics .................................................................................... 11 Preliminary Check .............................................................................................................................................................. 13 U3000 - 08:- Control Module - Bus Signal / Message Failures ................................................................................... 14 U3006 - 16:- Control Module Input Power "A" - circuit voltage below threshold ...................................................... 16 U3006 - 17:- Control Module Input Power "A" - circuit voltage above threshold ...................................................... 18 U1006 - 4B:- Control Module Internal - over temperature ........................................................................................... 20 U0422 - 81:- Invalid Data Received From Body Control Module - invalid serial data received ............................. 22 U0424 - 81:- Invalid Data Received From HVAC Control Module - invalid serial data received ........................... 24 U1622 - 81:- Invalid Data Received From Vehicle Control Unit - invalid serial data received ............................... 26 U1617 - 81:- Invalid Data Received From PEPS - invalid serial data received ........................................................ 28 U1309 - 08:- Lost Communication with Antilock Braking System/Electronic Stability Program (ABS/ESP) Control Module - Bus Signal / Message Failures .......................................................................................................... 30 U1320 - 08:- Lost Communication with Vehicle Control Unit - Bus Signal / Message Failures ............................. 32 U1611 - 57:- Master Electronic Control Module Communication from Backup Electronic Control Module - missing message ................................................................................................................................................................ 34 U0028 - 88 :- Vehicle Communication Bus A - bus off ................................................................................................. 36 U0037 - 88 :- Vehicle Communication Bus B - bus off ................................................................................................. 38 U0402 - 81 :- Invalid Data Received From TCM (Transmission Control Module) - invalid serial data received . 40 U0420 - 81 :- Invalid Data Received From Power Steering Control Module - invalid serial data received .......... 42 U0401 - 81:- Invalid Data Received From ECM/PCM "A" - invalid serial data received ......................................... 44 U0423 - 81:- Invalid Data Received From Instrument Panel Cluster Control Module - invalid serial data received ............................................................................................................................................................................... 46 U0101 - 08 :- Lost Communication With TCM - Bus Signal / Message Failures ...................................................... 48
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