Nexon_MCE2_7inch_Digital Instrument Cluster_DTC Trouble Shooting Data Version: 1.0 Date: 09-May-2023 Author: Suraj Patil / Rajesh Patil Page: 16 of 167 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. 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) & J1-14 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
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