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Vehicle Platform: OSPREY
ECU Name: Hella Body Control Module (BCM) DTC
Troubleshooting Data
Version: 1.4
Date: 15 May 2018
Author: Body CoC
Page: 761 of 855
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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.
B160B-12: Door Unlock control driver Relay/ Tailgate Unlock Control Relay - circuit short to battery
ISO Code (DTC Code)
B160B-12
Customer Symptom
Driver's door will not unlock
Fault Effects (On Vehicle)
Door will not unlock.
Lamp Status (If Any)
NA
Fault Detection Condition
This fault gets logged by BCM when door unlock control
driver relay output is shorted to battery.
Normal Operating Condition
Driver doors will unlock after pressing RKE unlock
button.
Probable Trouble Area
1. 1. BCM connector Fault.
2. 2. Harness issue.
3. 3. Switch fault.
4. 4. ECU fault.
Healing Condition
1. 1. Give ignition cycle after fault removal
2. 2. Clear DTC command- No DTC logged
Component Details:
This relay will get activated when user unlocks driver door only via RKE.
Preliminary Checks:
1.
Check Battery Voltage (9V-16V)
2.
Check ECU pins for oxidation, bending & damage.