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

Prepared by: Airbag COC Review Approved by: Sanjeev VM Page: 124 of 648 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. SRS / Airbag ECU AB12 DTC Troubleshooting Guide Version: 2.0 Date: 21-June-2021 B100D-86:- Right Side Peripheral sensor signal invalid Overview:- ISO Code B100D86 Customer Symptom SRS Warning Lamp continuously ON in Instrument Cluster. Fault Effects (On Vehicle) Right Side Crash detection performance is degraded & Right Side angular crash detection is not guaranteed. Lamp Status (If Any) SRS Warning Lamp continuously ON in Instrument Cluster. Fault Detection Condition This fault gets logged if an invalid signal is obtained from Right Side peripheral Sensor. Normal Operating Condition Proper signal should be obtained from Right Side peripheral Sensor. Probable Trouble Area Related wiring Harness, connector or terminals Right Side peripheral Sensor. Airbag Wiring Harness Airbag ECU Healing Condition Airbag ECU & Wiring Harness should be checked for any shorts, bents or damage & it needs to be rectified. Component Details:- (Refer Annexure 2 for Mounting Location of AB12 Airbag ECU) Right Side peripheral Sensor : - These sensors are mounted on Right Side “B” pillar at the bottom end. Airbag ECU: - It is fitted in the floor of central console in the car. The Airbag Electronic Control Unit (ECU) controls the deployment system to allow an appropriate igniting of the Airbags and belt pre-tensioners to restrain the Driver and passengers. Preliminary Checks:- 1. Check Battery Voltage (12 V & above) 2. Check for any faults in Airbag Warning Lamp indication in Instrument Cluster. 3. Ensure the proper locking of Airbag ECU wiring harness connectors in the vehicle by the locking sound. 4. Check whether the Right Side peripheral sensor is connected properly to the wiring harness. Ensure the proper locking of the Right Side peripheral sensor to the wiring harness connector. Troubleshooting:-