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TML Park Distance Controller (PDC) ECU DTC
Troubleshooting guide for Nexon
Version: 0.2
Date: 08Jun17
Author:
Ravi Teja
Page: 85 of 123
Copyright ©
TATA MOTORS Ltd.
This document must not be used in any way, such as copying and redistributing to third parties, without the consent of
author.
U0028-13:- Vehicle Communication Bus A-open circuit
Overview:
ISO Code
U0028-13
Customer Symptom
Park assistance will not be available
Fault Effects (On Vehicle)
Park assistance will not be available
Lamp Status (If Any)
Fault Detection Condition
Open circuit of the both CAN_H (connector pin no.9) and
CAN_L(connector pin no.10), only CANH, only CANL
Normal Operating Condition
ECU communicates properly with all ECUs.
Probable Trouble Area
CAN_H and CAN_L wires
Healing Condition
Reconnection of the CAN_H ( connector pin No.9) and
CAN_L(connector pin no.10)with the main CAN bus
Trouble Shooting:-
DTC’s confirmation:-
After rectification, ensure the following points using TML diagnostic tool before handing over to
customer.
a) Check whether PACM ECU is communicating with diagnostic Tool or not.
b) DTC should not be present in ECU memory.
U0028-13:- Vehicle Communication Bus A - open circuit
Start
Read DTC with diagnostic tool.
This DTC will be in history.
Clear DTC
End