Nexon EV Instrument Cluster DTC Troubleshooting Data Version: 1.1 Date: 13-July-2021 Author: Deepak Pujari Page: 9 of 108 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 -11 is present Is DTC B190B-11 is Present? Check for continuity between Pin No.J1-15 (GND) & J1-4 of ECU Connector. Is Continuity Present? OAT input is Short Circuit to Ground. 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 the cluster display. Clear the DTC from the ECU memory. Turn Ignition OFF & ON. Check for the OAT value on the cluster in deg C. Stop Stop YES NO YES NO Stop
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