Prepared by: Airbag COC Review Approved by: Sanjeev VM Page: 19 of 668 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: 3.0 Date: 05-June-2023 2. Check whether any new DTC’s are getting qualified for repeated cranking. 3. Ensure the Airbag Warning Lamp Indication is continuously ON in Instrument Cluster for 3 seconds after Ignition ON 4. Ensure the Airbag Warning Lamp Indication goes OFF after 3 seconds from Ignition ON. Circuit Schematic Diagram:- Schematic shown below for illustration Battery>>>>>Fuse>>>>Relay>>>>>>>Sensor/Actuator>>>>>ECU + 12 V Battery A15 CAN H Ignition Switch CAN L A1 A6 - RESTRAINTS CONTROL MODULE LH Side Airbag A11 A11 Fuse 10A B16 B15 SA1FL+- SA1FL+ Vbat
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