Nexon_MCE2_7inch_Digital Instrument Cluster_DTC Trouble Shooting Data Version: 1.0 Date: 09-May-2023 Author: Suraj Patil / Rajesh Patil Page: 20 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. Preliminary Checks: - 1. Check Battery Voltage is normal in the range (9v - 16v) 2. Check Fuel lines for Pinch/Cut. 3. Check ECU & Sensor pins for oxidation, bending & damage. 4. Check and ensure Fuel Sensor is giving linear Resistance output w.r.to the Fuel level. 5. Check Sensor resistance on Pin no. J1-11(FLS i/p) & J1-24(FLS GND) of the wired connector, whether it isaccording to the design specifications. Trouble Shooting: - Stop Stop Clear the DTC from the ECUmemory. Turn Ignition OFF & ON. In low-end variant check the function of Fuel level change onLCD display. & In high-end variant check the change of fuel level in Fuel bars. Stop Stop FLS input is Short Circuit to Ground. Rectify Fault at wiring Harness & wait for20sec to recover the fault. Clear the DTC & In low-end variant vehicle check the function ofFuel Bars change on LCD display. & In high-end variant vehicle check the changein fuel level in Fuel bars. YES Is DTC B1909-11 is Present? NO Stop YES Is ContinuityPresent? NO Check for continuity between Pin No. J110(Batt.GND) & J1- 11(FLS input) of ECU side. 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 B1909 - 11 is present
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