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NEXON EV
X114H
DTC Troubleshooting Data
Version: 3.0
Date: 27-May-2020
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12
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
P130017 is
present?
Go to step 2
Repair complete.
2
Turn Ignition switch “OFF" and remove the
LV battery negative terminal. Check the
continuity between KL30 and DCDC battery
fuse out.
Is there proper
continuity?
Go to step 3
Make the
connection proper
and check this fault
code again.
3
Check for DCDC converter output over
voltage fault and KL30 severely over voltage
DTC
Check DCDC
Converter DTC
P130025 &
P130016
Refer Trouble shooting
code P130025 or
P130016 respectively
and check fault code
P130017 again.
Go to step 4
4
Remove the LV connector of DCDC
Check if there is continuity between DCDC
signal connector pin 4 (KL30) and LV battery
positive as per below schematic.
DCDC signal connector pin 8 (KL31) and
LV battery negative.
Is there any
terminals damage
or LV harness
damage
Replace the pins/
terminals or replace the
LV harness and go to
step 1
Go to step 5
5
Check for fault code again.
Fault code
P130017 is
present?
Replace DCDC
Converter
Repair completed
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 charges LV Battery and LV battery in range of 8v to 16V
Schematic Block Diagram:-