Nexon_MCE2_7inch_Digital Instrument Cluster_DTC Trouble Shooting Data Version: 1.0 Date: 09-May-2023 Author: Suraj Patil / Rajesh Patil Page: 14 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. B190B - 15:- Ambient Temperature Sensor Input Short To Battery or Open Overview: - ISO Code B190B - 15 Customer Symptom N/A Fault Effects (On Vehicle) N/A Lamp Status (If Any) N/A Fault Detection Condition IC shall display OAT as ‘---‘deg. C. Normal Operating Condition IC shall display OAT value & Operating range is b/w -40 to 85 Deg. 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 On/Off. Component Details: - OAT Sensor - This sensor gives direct resistive input to the Cluster w.r.to the temperature changes in Outside environment. Refer below table for resistance Vs temperature mapping.
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