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

Prepared by: Airbag COC Review Approved by: Sanjeev VM Page: 475 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 B1040-00:- Incompatible calibration parameter software component no sub type information Overview:- ISO Code B1040-00 Customer Symptom SRS Warning Lamp continuously ON in Instrument Cluster. Fault Effects (On Vehicle) B1040-00 DTC is qualified. Lamp Status (If Any) SRS Warning Lamp continuously ON in Instrument Cluster. Fault Detection Condition B1040-00 DTC is qualified. Normal Operating Condition B1040-00 DTC should not be present. Probable Trouble Area Incompatible calibration parameter Healing Condition Replace the Airbag ECU with the new one (ensure the correct configuration as per VC). Ensure correct calibration parameter. Report to BOSCH Component Details:- (Refer Annexure 2 for Mounting Location of AB12 Airbag ECU) 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. Troubleshooting :- NA. Replace the Airbag ECU 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.