Kanger 2.0 iVBAC DTC Troubleshooting data Version: 1.0 Date: 31-March-22 Author: ERC, Chassis CoC This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author. Copyright © TATA MOTORS Ltd. P a g e | 11 C0031-12 :- Left Front Wheel Speed Sensor- Circuit Short to Battery Overview: ISO Code C0031-12 Customer Symptom Warning Light Displayed Fault Effects (On Vehicle) EBD – Available, ABS & ESC – Not available Lamp Status (If Any) ABS – ON, EBD – OFF, ESC – Depends on fault type Fault Detection Condition FL WSS is not functional. Normal Operating Condition i VBAC ECU is functional in between 10V to 16V. FL WSS gives correct information to i VBAC ECU. Probable Trouble Area 1.Short circuit of the WSS_FL signal line to UBAT. 2.Defective Wheel speed sensor. 3.I VBAC ECU internal failure. Healing Condition Fault identification and rectification/ WSS replacement Component Details: Wheel Speed Sensor: A wheel speed sensor is part of the Electronic Stability Control (ESC). It is located on the Knuckle Assembly (for front wheels) and on Rear Twist beam (for Rear wheels). The job of the wheel speed sensor is to constantly monitor and report the rotational speed of each wheel to the Electronic control module. Preliminary Checks: Check short circuit of the WSS_FL signal line at IVBAC ECU 46 Pin Connector (Pin no.17 See Connector below) to UBAT (Pin no.1)
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