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. Restraints Control Module AB12 (SRS / Airbag) ECU Replacement Procedure Version: 4.0 Date: 15-July-2021 Author: Airbag CoC, ERC Page: 5 of 14 j. Write the correct CAN node selection ($2E 4019 Data) inside the ECU as per VC number (Please refer to Look up table or as per R16 server). k. Please give ECU soft reset, wait for 7sec (11 01), instead of taking out ignition key from vehicle. l. Go to extended session (10 03) & Get security access for the Airbag ECU with the dll (using production key in build in service tool). m. Unlock ECU (Enable Firing) using $2E 40 13 00 service n. Please give ECU soft reset, wait for 7sec (11 01), instead of taking out ignition key from vehicle. o. Clear DTC’s and check for DTC’s. p. Check the Warning Lamp in Instrument Cluster. (After prove out SRS warning lamp should be off in Instrument Cluster, if no faults are qualified in SRS ECU) q. Read ECU data after successful writing and compare it with PLM server data for the respective VC: 1. VIN (Vehicle Identification) number ($22 F1 90) 2. ECU installation date ($22 F1 9D) 3. ECU assembly number ($22 72 34) 4. ECU Application Software part number ($22 72 41) 5. ECU Calibration Software part number ($22 72 42) 6. ECU Software Version Number ($22 F1 95) 7. ECU parameterization number ($22 72 44) 8. System Configuration ($22 40 10) 9. CAL parameter number ($22 40 11) (Unique identification number of Calibration). 10. Passenger SBR Switch & Chime configuration ($22 401A) 11. Rear Passenger SBR Switch & Chime configuration ($22 401B) 12. PAB switch logic ($22 4018) 13. CAN node selection ($22 4019)
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