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Vehicle Platform: OSPREY / AMP
ECU Name: PEPS
DTC Troubleshooting Data
Version: 1.2
Date: 29 Mar 2017
Author:
Rajasekhara Reddy
Page: 114 of 369
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.
Troubleshooting:-
Start
B1639-31
Is this Historic DTC?
Clear the DTC, make the IGN OFF,
wait for 20 seconds and inspect
the steps mentioned in the
“Inspection Methods”
Is inspection method OK?
Stop
YES
YES
Check the battery voltage
NO
Stop
NO
NO
Replace the battery or try to jump
start the vehicle.
Stop
YES
Still problem persist i.e. DTC
is appearing?
NO
YES
Is DTC persist?
YES
NO
Is battery voltage within
9V – 16V?
Check whether the IGN
connection to EMS is correct or
not
Is IGN connection EMS is
correct?
Check whether the CAN H & CAN
L connection between PEPS &
EMS are correct or not.
Is CAN H & CAN L
connection between PEPS &
EMS is correct?
YES
Correct the IGN connection to
EMS
Stop
Correct the CAN H & CAN L
connection between PEPS & EMS
NO
Please contact EMS owner
YES
Stop