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Immobilizer –DTC Troubleshooting Data
Version: 1.
2
Date:
03-June-2014
Prepared Author
:
Sarang K/Mithipati P
Review & approved by
: R A Rode (ERC-E&E)
Page: 46 of 67
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
Engine cranking will not happen.
Fault Effects (On Vehicle)
Engine cranking will not happen.
Lamp Status (If Any)
N.A
Fault Detection Condition
This DTC will appear in case of following open circuit
failures:
1 CANH wire open
2. CANL wire open
3. Both CANH,CANL open
4. Short circuit between CANL-GND, CANH-Vbatt.
Normal Operating Condition
ECU communicates properly with TML diagnostic Tool.
Probable Trouble Area
CAN_H and CAN_L wires
Healing Condition
Reconnection of the CAN_H (connector pin 3) and
CAN_L(connector pin 8)with the main CAN bus
Trouble Shooting:-