Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1.0 Date: 30/11/2019 Author: ERC Page 501 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 U0155-31: Lost communication with Instrument Panel Cluster Module- Bus signal/ Message Failure Overview: ISO Code U0155 Customer Symptom RPM indication will be disabled Fault Effects (On Vehicle) ECU will go into the default mode Lamp Status (If Any) - Fault Detection Condition 1. IPC connector is not connected properly or disconnected from its location. 2. CAN wire from IPC connector side is disconnected 3. IPC is not powered up. 4. CAN_H, CAN_L or/ and both lines of IPC are opened Normal Operating Condition ECM ECU communicates properly with IPC ECU. Probable Trouble Area 1. Disconnection of the IPC connector 2. CAN_H and CAN_L lines at IPC connector end. Healing Condition 1. To fix the IPC connector correctly and Fix the wiring harness issues from IPC side 2. CAN_H, CAN_L or/ and both lines of IPC are connected properly to the IPC connector Trouble Shooting:
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