Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1.0 Date: 30/11/2019 Author: ERC Page 496 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 U0151-31: Loss of communication with Restrain Control Module- Bus Signal/ Message Failure Overview: ISO Code U0151 Customer Symptom Fuel cut off not happened during crash Fault Effects (On Vehicle) Fuel cut off not happened during crash Lamp Status (If Any) - Fault Detection Condition 1. RCM connector is not connected properly or disconnected from its location. 2. CAN wire from RCM connector side is disconnected. 3. RCM is not powered up. 4. CAN_H, CAN_L or/ and both lines of RCM are opened. Normal Operating Condition ECM ECU communicates properly with RCM ECU Probable Trouble Area 1. Disconnection of the RCM ECU connector 2. CAN_H and CAN_L lines at RCM connector end Healing Condition 1. To fix the RCM connector correctly 2. Fix the wiring harness issues from RCM side. 3. CAN_H, CAN_L or/ and both lines of RCM are connected properly to the RCM connector.
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