Gravitas/SAFARI/X451/NEXON FATC DTC Troubleshooting Data Version: 1.1 Date: 28-Apr-2021 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. Author: ERC Page: 5 of 244 B1F1B-11:- Solar Radiation Sensor Circuit - Circuit short to Ground; ISO Code B1F1B- 11 Customer Symptom System operates but with reduced sensitivity to conditions Fault Effects (On Vehicle) Solar load cannot be evaluated and solar compensation will not be possible Lamp Status (If Any) NA Fault Detection Condition Solar Radiation Sensor Circuit - Circuit short to Ground Normal Operating Condition With the sensor connected to the harness and with Ignition ON, check the voltage between pin no 1 & 2 of the sensor. The voltage range should be in between 4.057 to 1.334 V Probable Trouble Area Sensor signal line short to ground or sensor is faulty Healing Condition NA Component Details: Solar sensors sends the current to control unit according to the intensity of sunlight. Stronger the incident sunlight, higher the current.
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