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NEXON EV
X114H
DTC Troubleshooting Data
Version: 3.0
Date: 27-May-2020
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61
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.
P130027:- Output Under Voltage
Overview:
ISO Code (If applicable)
P130027
Customer Symptom
NA
Fault Effect (On Vehicle)
DCDC Converter is not charging LV battery. Vehicle stops when LV
battery is completely drained
Lamp Status (If Any)
NA
DTC Detection Condition
This DTC gets logged if the output voltage is less than 10V.
Normal Operating Condition
If the output voltage is greater than 10V .
Probable Trouble Area
1.
Output short circuit or overload
2. Sensor error
Healing Condition
Ignition OFF wait till VCU sleeps & Ignition ON
Write up for
the system :-
HV DCDC Converter converts DC high voltage to low voltage to charge 12V battery. The conversion starts with wakeup and
enable signal to DCDC converter from VCU.
Pre-CheckPoints:
a)
Check for design intended LV Battery
b)
Check LV Battery voltage
c)
Check the DC output connector for damage
d)
Check for proper body ground connection of DCDC Converter
LV Signal Connector
HV Battery
DCDC Converter
12V LV Battery