TML Gen3 IVI DTC Troubleshooting guide Version: 0.4 Draft Date: 04-Aug-23 Author: Hemant Mitra Page: 431 of 584 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. B1948 - 15:- Fuel Level Sensor Input – Main Side Short To Battery or Open (Saddle Tank) Overview:- ISO Code B1948 - 15 Customer Symptom No fuel indication Fault Effects (On Vehicle) N/A Lamp Status (If Any) Low fuel warning Lamp shall be blink @2Hz Fault Detection Condition Fuel gauge bars shall turn Off, Low fuel warning lamp shall blink @2Hz 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 50 ltr tank – TFT IPC Diesel
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