Vehicle Platform: OSPREY ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 1.4 Date: 15 May 2018 Author: Body CoC Page: 475 of 855 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. B1F09 – 11: Interior Lamp Deactivation Signal – Circuit Short to Ground Overview: ISO Code (DTC Code) B1F09 - 11 Customer Symptom Interior Lamp (Roof lamp at ON position, boot lamp, spot lamp) always OFF. Fault Effects (On Vehicle) Interior Lamp always OFF. Lamp Status (If Any) Interior Lamp always OFF. Fault Detection Condition This fault gets logged by BCM when Interior Lamp Deactivation (Battery Saver Control) output is shorted to ground. Normal Operating Condition Interior Lamp should turn ON whenever it will require. Probable Trouble Area 1. BCM connector wired wrong, 2. Cockpit harness wire shorted to ground. Healing Condition 1. Ignition OFF ON 2. Clear DTC Command Component Details: User turns ON Interior lamp (Roof lamp at ON position, boot lamp, spot lamp). Interior Lamp Deactivation Signal is active high. Preliminary Checks: 1. Check Battery Voltage (9V-16V) 2. Check ECU pins for oxidation, bending & damage. Trouble Shooting:-
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