3680 / 5157
ABS - DTC Troubleshooting Data
(Bolt, Zest, Tiago, Pelican, Nexon & Tigor)
Version: 1.4
Date: 21 April 2017
Author: ERC - Chassis E&E
Page 160 of 166
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.
U0401-81 - Invalid Data Received From ECM/PCM”A”-Invalid serial data received
Overview
ISO Code
U0401-81
Customer Symptom
ABS lamp will be ON.
Fault Effects (On Vehicle)
Engine Torque Control (EDTC) function will not be
available.
Lamp Status (If Any)
ABS lamp will be ON.
Fault Detection Condition
Incorrect data received from ECM
Normal Operating Condition
ECM ECU sends correct data in normal condition.
Probable Trouble Area
ECM ECU and its interface circuits and sensors
Healing Condition
After rectifying all the functional failures in the ECM ECU.