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NEXON EV
X114H
DTC Troubleshooting Data
Version: 3.0
Date: 27-May-2020
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66
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.
P130028:-Input Under Voltage
ge
Overview:
ISO Code (If applicable)
P130028
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 input voltage is lower than 190V
Normal Operating Condition
If the output voltage is higher than 190V
Probable Trouble Area
1.
Output short circuit or overload
2.
Input short circuit
3.
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-Check Points:
a)
Check the DCDC Converter DC input connector for damage
b)
Check the voltage of HV battery.
LV Signal Connector
HV Battery
DCDC Converter
12V LV Battery