PEPS Part Replacement Procedure Title: PEPS System Part Replacement Procedure Spec Num 2921 XX XXX A XXXXTBD Date: 28-Feb-20 Version: 1.8 Page: 4 of 38 Prepared: Sabal V Checked: Awanish T Approved: Sanjeev VM 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. Step-21 - New step added to write same AES_SK key in EMS Step-23 - New step added to check and confirm the status smart key/ UID learned with PEPS Step-24 - New step added to store the learned smart key/ UID ID on server Step-27 - AES_SK key locking procedure PEPS added Step-28 - AES_SK key locking procedure BCM added Step-29 - New step added to lock AES_SK key in EMS ECU Read status of PEPS Lifecycle with UID ($22 44 42), step removed. Read status of PEPS Lifecycle with EMS ($22 44 43), step removed. 1.2 Draft1 Read status of PEPS Lifecycle with UID ($22 44 42), step retained back. 1.2 6 1.3 Terminologies – Made in alphabetical order. 1.3 7 2 NOTE modified 9 2 After step-14, NOTE added "Always provide ECU reset before reading VC number" 12 2 After step-31, NOTE added "Always provide ECU reset before reading VC number" 12 2 Step-32 - Modified for response validation 10 2 Step-18 – Strikeout as not required 1.4 2.2 ECU replacement procedure - wearable is added in addition to smart key 2.3 Heading modified - Wearable is added in addition to smart key NOTE added - same procedure for wearable and smart key Statements modified - wearable is added in addition to smart key Point-1 added - PEPS ECU shall be in awake mode by turning ON position or hazard lamps Point-2 added - If fresh ECU is present, Free IGN ON can be used Heading modified - Wearable is added in addition to smart key 2.4 NOTE added - same procedure for wearable and smart key Statements modified - wearable is added
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