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NEXON EV
X114H
DTC Troubleshooting Data
Version: 3.0
Date: 27-May-2020
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82
Author: K Tejaswini Manasa/ Navya Krishnan/Gaurav Jha
Copyright © TATA MOTORS Ltd.
This document must not be used in anyway, such as copying and redistributing to third parties, without the consent of author.
TroubleShooting:-
Flow Diagram or table format for diagnosing the fault code
Step no
.
Description
Check Point
if YES
if NO
1
Remove the 12V LV battery negative terminal.
After a minute connect the 12V LV battery
negative terminal & "Ignition Switch" to ON
position.
Crank and wait for 2 minutes.
Check for the fault code.
Fault code
P130031 is
present?
Go to step 2
Repair complete.
2
Check for DC DC converter HV fuse (20A)
Is the fuse
blown?
Replace the fuse
Go to step 3
Go to step 3
3
Remove PDU side DC DC converter HV
connector and check for isolation between
positive, body & negative, body.
Is isolation
resistance
>500M ohms?
Replace DCDC
Converter
Go to step 4
4
Connect the PDU connector & remove DC DC
converter HV input connector and check for
isolation between positive, body & negative,
body of cable
Is isolation
resistance
>500M ohms?
Go to step 5
Replace the HV cables.
5
Connect the PDU connector & remove DC DC
converter HV input connector and check for
isolation between positive, body & negative,
body of DC DC
Is isolation
resistance
>500M ohms?
Repair complete
Go to step 1
Replace DCDC
Converter
DTC’s confirmation:-
After rectification, ensure the following points by referring DCDC parameters using TML diagnostic tool before handing over to
customer.
a) DCDC converter charging LV battery in the range of 8V to 16V
Schematic Block Diagram:-