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Nexon Gasoline – EMS ECU Bosch
DTC Troubleshooting Manual
Version: 0.1
Date: 26-08-2017
Prepared By: Sunu S Babu/Yogesh Jadhav
Checked By: Yeshwant Jadhav
Approved By: Satish Kumar
Document Part No: 2921 02 224 A1736
Page: 1156 of 1203
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.
U0121-31_Loss of communication with Antilock Braking System- Message Timeout Failure
Overview:
ISO Code
U0121-31
Customer Symptom
ABS Drag Torque control functionality will not work.
Fault Effects (On Vehicle)
ABS Drag Torque control functionality will not work
Lamp Status (If Any)
None.
Fault Detection Condition
1. ABS/ ESP Control Module connector is not connected
properly or disconnected from its location.
2. CAN Stub wire from ABS/ ESP Control Module connector
side is disconnected.
3. ABS/ ESP Control Module is not powered up.
Normal Operating Condition
ABS/ ESP Control Module communicate properly with TML
diagnostic Tool.
Probable Trouble Area
Disconnection of the ABS/ ESP connector
Healing Condition
To fix the ABS/ ESP Control Module correctly and Fix the
wiring harness issues from ABS/ ESP Control Module side.