TIAGO TIGOR BSVI - SERVICE MANUAL - DTC 24-12-2021

TATA BSVI Gasoline Program – EMS ECU Bosch DTC Troubleshooting Service Manual Version: 1.2 Date: 18-12-2019 Prepared By: Sunita Mandlik Checked By: Yeshwant Jadhav Approved By: Satish Kumar Document Part No: 2921 02 xxx xxxx Page: 1074 of 1498 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. U0151-31: Loss of communication with Restrain Control Module-Message Timeout Failure Overview: ISO Code U0151-31 Customer Symptom Vehicle will not function as per design intent Fault Effects (On Vehicle) Vehicle will not function as per design intent Lamp Status (If Any) None. Fault Detection Condition 1. RCM connector is not connected properly or disconnected from its location. 2. CAN Stub wire from RCM connector side is disconnected. 3. RCM is not powered up. Normal Operating Condition RCM ECU communicates properly with TML diagnostic Tool. Probable Trouble Area Disconnection of the RCM connector Healing Condition To fix the RCM connector correctly and Fix the wiring harness issues from RCM side. Trouble shooting steps: Step Checks IF YES IF NO 1. Check the connectivity between EMS ECU pin CAN_H(132)to SRS ECU CAL_H(1) Rectify the wiring harness Go to next step 2 Check the connectivity between EMS ECU pin CAN_L(144)to SRS ECU CAL_L(2) Rectify the wiring harness Go to next step 3 Check the resistance between pin 132 & pin 144 of the vehicle connector it should be approximately 60 ohms Go to next step Check for terminal back out of the wiring harness at ECU & instrument cluster CAN wire 4 If fault still persists Replace EMS ECU Repeat above procedure for reconfirmation