Vehicle Platform: OSPREY / AMP
ECU Name: PEPS
DTC Troubleshooting Data
Version: 1.2
Date: 29 Mar 2017
Author:
Rajasekhara Reddy
Page: 247 of 369
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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.
B1647–06 :- Bad authentication with ESCL- Algorithm based failure
Overview:-
ISO Code (DTC Code)
B1647-06
Customer Symptom
On cranking the vehicle Engine is not starting
Fault Effects (On Vehicle)
On cranking the vehicle Engine will not start
Lamp Status (If Any)
Immo telltale lamp on instrument cluster stays ON after IGN ON.
Fault Detection Condition
On SSSW pressed, PEPS sends key authentication request to
ESCL, if any algorithmic fault is detected, PEPS ECU logs this
DTC.
Normal Operating Condition
3. On cranking the vehicle engine shall start seamlessly.
4. On SSSW pressed, the vehicle power mode shall change.
Probable Trouble Area
3. PEPS ECU
4. ESCL ECU
Healing Condition
Ignition Transition:- IGN OFF
ACC ON/ CRANK
On ACC ON after ESCL key authentication request, no DTC is
logged by PEPS.
Table 53:- B1647 - 06 overview details
Component Details:-
1. PEPS ECU
2. ESCL ECU
Preliminary Checks:-
1. After pressing start stop switch, check whether power mode LEDs are coming ON..




