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: 298 of 549 B0028-1B:- Right Side Deployment Control circuit resistance above threshold Overview:- ISO Code B0028-1B Customer Symptom SRS Warning Lamp continuously ON in Instrument Cluster. Fault Effects (On Vehicle) Right Side Airbag deployment not guaranteed, if a crash happens Lamp Status (If Any) SRS Warning Lamp continuously ON in Instrument Cluster. Fault Detection Condition This fault gets logged if the circuit resistance of Right Side Airbag is above the threshold value (5.5 Ohm) after 4 seconds of cranking. Normal Operating Condition The maximum threshold for Right Side Deployment Control circuit is 5.5 Ohm. Probable Trouble Area Related wiring Harness, connector or terminals Right Side Airbag Module Airbag ECU Healing Condition Maximum threshold resistance for Right Side Airbag resistance should be less than 5.5 Ohm. Component Details:- Right Side Airbag Module: - This airbag is located in seat which inflate between the occupant and door. Airbag ECU: - It is fitted in the floor of central console in the car. The Airbag Electronic Control Uni t (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. Trouble Shooting:-
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