PEPS Part Replacement Procedure Title: PEPS System Part Replacement Procedure Spec Num 2921 XX XXX A XXXXTBD Date: 18-Aug-2022 Version: 2.1 Page: 3 of 41 Prepared: Ganesh Girase Checked: Awanish T Approved: Himanshu Saxena This specification is the exclusive property of Tata Motors Limited. Without their consent it may not be reproduced or given to third parties. The above specifications are subject to change and therefore suppliers are requested to refer the latest one. CONTROLLED COPY FOR RESTRICTED CIRCULATION © TATA MOTORS LTD. Change History Version Page Section Change details 0.1 All - First release 0.2 2.1 Added “ perform step 11 to step 24” in precheck task before replacement All Document flow modified. 0.3 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0 Added different scenarios for addition and deletion of smart keys 11.0 Added remedial action for part replacement. 12.0 Added use case Vs. routine applicability table 2.2 Clear DTC done after power latch 0.4 All Reframing of document. Merging of different scenario. Smart key learning and deletion Procedure modified. Removed remedial action part Updated use case Vs. applicability table 1.0 2.2 Reading DTC after self-test and input test routine. 3.3 Point 2 modified to remove dependency on number on lockset to find tag number. 2.3 (point 6) 1.1 2.2 (point 22) Added Read all DIDs. 2.2 (point 23) Added Read status of PEPS Lifecycle with UID. 2.2 (point 24) Added Read status of PEPS Lifecycle with EMS. 3. LF Antenna Replacement Procedure LF Antenna Replacement Procedure added. 5. Figures Location of Antennas (Console, Rear right and Tailgate) added. 1.2 Draft 2 Step-15 - Modified to check whether AES_SK key is locked or not before writing Step-16 - New step added to write same AES_SK key in BCM Step-18 - New step added to provide the hard reset to PEPS after writing the parameter data Step-19 - New step added to reset PEPS BCM encryption counter in BCM Step-20 - New step added to provide the hard reset to BCM after writing the parameter data
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