Vehicle Platform: OSPREY ECU Name: Hella Body Control Module (BCM) DTC Troubleshooting Data Version: 1.4 Date: 15 May 2018 Author: Body CoC Page: 422 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. B160A- 14: Door Second Stage UnLock/ Door UnLock control others Relay - Circuit short to Ground Overview: ISO Code B160A - 14 Customer Symptom Doors unlock and will not lock Fault Effects (On Vehicle) Doors unlock and will not lock Lamp Status (If Any) NA Fault Detection Condition This fault gets logged by BCM when door unlock control others relay output is shorted to ground. Normal Operating Condition All doors will unlock after pressing RKE unlocks switch/ internal knob. Probable Trouble Area 1. BCM connector wired wrong 2. Cockpit harness wire shorted to ground 3. Relay damaged. Healing Condition 1. Ignition OFF ON 2. Clear DTC Command Component Details: All doors will unlock using door unlock control others relay when user press RKE unlock switch or internal knob. Doors unlock control others relay is active low. Preliminary Checks: 1. Check Battery Voltage (12.5 V & above) 2. Check ECU pins for oxidation, bending & damage. Trouble Shooting:-
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