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TIAGO/TIGOR AMT Gasoline
DTC Troubleshooting Guide
Version: 4.0
Date: 18-04-2017
Author: Sathi/Anupama
Page: 364 of 427
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.
127.
U0001-88 - Vehicle Communication Bus A- Bus off
Overview:
ISO Code
U0001-88
Customer Symptom
All warning lamps will be ON
Fault Effects (On Vehicle)
1. If vehicle in standstill; it will not crank
2. If in running condition; no gear shift allowed, Gear will
be forced to Neutral
Lamp Status (If Any)
All warnings 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
TCM 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