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

Prepared by: Airbag COC Review Approved by: Sanjeev VM Page: 70 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 DTC’s confirmation:- After rectification, ensure the following points using TML diagnostic tool before handing over to customer. 1. Clear the DTC’s & make sure no DTC’s are present for Airbag system 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. IS DTC PRESENT? 1. TURN OFF & ON IGNITION . CLEAR DTC ’s & CHECK FOR DTC’s 2. SEND THE DIAG REQUEST “ 14 FF FF FF ” & CHECK WHETHER NRC 22 IS RECEIVED ? IS NRC 22 RECEIVED ? 1. TURN OFF IGNITION. REP LACE THE AIRBAG ECU WITH A NEW ONE. 2. SEND THE OLD ECU TO THE SUPPLIER FOR ANALYSIS THROUGH CUSTOMER SUPPORT. YES NO NO YES TURN OFF & ON IGNITION . CLEAR DTCs & CHECK FOR DTC’s IS DTC STILL PRESENT? NO STOP YES RE - CONNECT THE AIRBAG ECU ( NEW ) & W/H MODULE IN THE VEHICLE START TURN ON IGNITION. CONNECT THE DIAGNOSTIC TOOL AND CHECK FOR DTC’s B1013-00