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: 536 of 549 DTC’s confirmation:- After rectification, ensure the following points using TML diagnostic tool before handing over to customer. a) Clear the DTC’s & make sure no DTC’s are present for Airbag system b) Check whether any new DTC’s are getting qualified for repeated cranking. c) Ensure the Airbag Warning Lamp Indication is continuously ON in Instrument Cluster for 4 seconds after Ignition ON d) Ensure the Airbag Warning Lamp Indication goes OFF after 4 seconds from Ignition ON. TURN ON IGNITION.CONNECT THE DIAGNOSTIC TOOL AND CHECK FOR DTC’s IS DTC PRESENT? CLEAR DTC . TURN OFF & ON IGNITION & CHECK FOR DTC’s ( at least2 to 3 times) IS DTC STILL PRESENT ? TURN OFF IGNTION. ANDREPLACE THE AIRBAG WIRING HARNESS WITH A NEW ONE . YES NO NO YES NO TURN OFF & ON IGNITION . CLEAR DTC’s & CHECK FOR DTC’s IS DTC PRESENT? NO STOP YES TURN ON IGNITION. CLEAR DTC’s & CHECK FOR DTC’s. RE - CONNECT THE AIRBAG ECU, W/H & PSP MODULE IN VEHICLE 1. TURN OFF IGNITION. 2. REPLACE THE AIRBAG ECU WITH A NEW ONE IS DTC STILL PRESENT? YES START . B100D-2B
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