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NEXON EV
X114H
DTC Troubleshooting Data
Version: 3.0
Date: 27-May-2020
`
22
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
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
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.
Clear fault code and check again.
Fault code P130019
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.
Is there proper
continuity?
Go to step 3
Make the
connection proper
and check this fault
code again.
3
Check for the DCDC_BATT(5A) LV fuse Is DCDC_BATT
(5A) LV fuse
blown?
Replace the fuse and go
to step 1
Go to step 4
4
Check for DCDC converter output under
voltage fault
Check DCDC
Converter DTC
P130027
Refer Trouble shooting
code P130027 and check
fault code P130019
again.
Go to step 5
5
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 6
6
Check for fault code again.
Fault code P130019
is present?
Replace DCDC
Converter
Repair completed