NEXON DIAGNOSTIC MANUAL

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Author: Balaji / Amar /

Nitin / Umapathi /

Deepak

Page: 23 of 138

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.

B1909 - 15:- Fuel Level Sensor Input Short To Battery or Open

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

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

the change in the fuel inside Tank.

Refer below fuel gauge calibration table for 35 ltr tank – High End.

Refer below fuel gauge calibration table for 35 ltr tank – Low End.