TIAGO TIGOR BSVI - SERVICE MANUAL - DTC 24-12-2021

X0 MCE (Tiago / Tigor) Instrument Cluster DTC Troubleshooting Data Version: 1.4 Date: 14-Dec-19 Author: Jeeva Raj / Sharad Shivane Page: 15 of 135 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. Preliminary Checks:- 1. Check Battery Voltage is normal in the range (9v - 16v) 2. Check OAT lines for Pinch/Cut. 3. Check ECU & Sensor pins for oxidation, bending & damage. 4. Check and ensure OAT Sensor is giving linear Resistance output w.r.to the Temperature change. 5. Check Sensor resistance on Pin no. 29(OAT i/p) & 31(OAT Gnd) of the wired connector, whether it is according to the design specifications (between 320 to 100.923k ohm). Trouble Shooting:- Turn ON Ignition. Connect the TML Diagnostic Tool. Check the status of DTC’ s (Memorized/Current) Record the DTC & Clear DTC’ s Turn Ignition OFF & ON Verify If DTC B190B -15 is present Is DTC B190B-15 is Present? Check for continuity between Pin No.J1-1(Batt) & J1-29 of ECU Connector or OAT harness is open circuited. Is STB or Open is present? OAT input is Short Circuit to Battery or Open. Rectify Fault at wiring Harness & wait for 20sec to recover the fault. Clear the DTC. Verify the function of OAT Sensor with multimeter & OAT value on display. Clear the DTC from the ECU memory. Turn Ignition OFF & ON. Press the mode switch button one time to show the OAT display value & Check whether display is showing the OAT value in Deg.C. Stop Stop YES NO YES NO Stop