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Vehicle Platform: Tiago,Tigor & Osprey
ECU Name: Hella Body Control Module (BCM)
DTC Troubleshooting Data
Version: 2.0
Date: 22-10-2018
Author: Parag K
Page: 396 of 737
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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.
B1609 - 14: Door Lock Relay - Circuit Short to Ground or Open
Overview:
ISO Code (DTC Code)
B1609 - 14
Customer Symptom
No Unlocking action happened on operating the vehicle
unlock.
Fault Effects (On Vehicle)
Driver's door locks and will not unlock
Lamp Status (If Any)
NA
Fault Detection Condition
This fault gets logged by BCM when Door Lock Relay output
is short to ground.
Normal Operating Condition
Vehicle shall get locked and unlocked properly.
Probable Trouble Area
1. All door Lock relay output is short to ground.
2. Open circuit between BCM & All door lock relay.
3. BCM mating connector is faulty.
4. All door lock relay is faulty.
5. BCM ECU fault
Healing Condition
1. Ignition OFF
ON
2. Clear DTC Command
Component Details:
Door Relay, BCM connector
Preliminary Checks:
1. Check Battery Voltage (9V-16V)
2. Check ECU pins for oxidation, bending & damage.
Trouble Shooting: