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TML Infotainment DTC Troubleshooting guide for Osprey
Version: 0.2
Date: 21-Mar-17
Author:
Vijaya Bhaskar
B/Hemant Mitra
Page: 60 of 63
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.
U0028-88:- Vehicle Communication Bus A - Bus off
Overview:
ISO Code
U0028-88
Customer Symptom
All warning lamps will be ON
Fault Effects (On Vehicle)
Interfacing functions with Body Control Module, HVAC
Control Module and Instrument Panel Cluster Module will not
work.
Lamp Status (If Any)
All lamps will be ON
Fault Detection Condition
1. Short circuit between CAN_H -CAN_L, CAN_H -
GND, CAN_L- Vbatt , CAN_L-GND and/or CAN_H-
Vbatt
2. Open circuit of CAN_H/ CAN_L/ both lines
Normal Operating Condition
ECU communicates properly with TML diagnostic Tool.
Probable Trouble Area
CAN_H and CAN_L wires
Healing Condition
1. Removal of the above mentioned shorts in the wiring
harness or at ECU pin.
2. Reconnecting CAN_H/ CAN_L/ both lines