Copyright © TATA MOTORS Ltd. This document must not be used in any w ay, such as copying and redistributing to third parties, w ithout the consent of author. SRS / Airbag ECU – DTC Troubleshooting Guide Vers ion: 14.0 Da te: 14-February-2017 Prepared by:Airbag COC Review & Approved by:Sanjeev VM Page: 106 of 549 B100E-86:- Frontal Impact Driver sensor signal invalid Overview:- ISO Code B100E86 Customer Symptom SRS Warning Lamp continuously ON in Instrument Cluster. Fault Effects (On Vehicle) Front Crash detection performance is degraded & Front Driver 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 Frontal Impact Driver Sensor. Normal Operating Condition Proper signal should be obtained from Frontal Impact Driver Sensor. Probable Trouble Area Related wiring Harness, connector or terminals Frontal Impact Driver 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:- Frontal Impact Sensor:- It is usually located in the radiator support vertical member. Front impact sensors collect the data necessary to make decisions about Airbag deployment. 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 Frontal Impact Driver sensor is connected properly to the wiring harness. Ensure the proper locking of the Frontal Impact Driver sensor to the wiring harness connector. Trouble Shooting:-
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