X104 MCE Instrument Cluster DTC Troubleshooting Data Version: 1.4 Date: 14-Dec-19 Author: Muni Balaji / Jeeva Raj Page: 23 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. Overview:- ISO Code B1909 - 15 Customer Symptom No fuel indication Fault Effects (On Vehicle) N/A Lamp Status (If Any) Low fuel warning Lamp shall be blink. Fault Detection Condition Fuel gauge bars shall turn Off, Low fuel warning lamp shall blink. Normal Operating Condition Fuel bars shall display w.r.to the input Resistance value. Probable Trouble Area Related wiring Harness, connector or terminals damaged. IPC connector wired wrong, Harness wire shorted, Sensor connector wired wrong, Sensor damaged. Healing Condition IC shall recover from open/short condition after receiving valid values for 20s or Ignition Off/On. Component Details:- Fuel Sensor - This sensor gives direct resistive input to the Cluster w.r.to the change in the fuel inside Tank. Refer below fuel gauge calibration table for 44 ltr tank – High & Low End. Preliminary Checks:- 1. Check Battery Voltage is normal in the range (9v - 16v)
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