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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: 386 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.
B1620 - 11: Other Doors Switch - Circuit Short to Ground
Overview:
ISO Code (DTC Code)
B1620 - 11
Customer Symptom
1. The IC shows Other Doors as open status, even
if all the other doors are closed as presumed by
the customer.
2. Interior Roof lamp in Auto mode selection will
ON for 10 minutes.
3. The Mis-lock sound occurs on RKE lock
command.
NOTE:
Here, Other Doors means Passenger door, Rear Left
Door and Rear Right Door
Fault Effects (On Vehicle)
1. Unnecessary battery power consumption
(because Interior Roof lamp in Auto mode
selection will always ON for 10 minutes.)
2. The vehicle will not enter into arm state, when
RKE lock is given and no alarm functionality will
work.
Lamp Status (If Any)
1. Interior Roof lamp in Auto mode selection will
ON for 10 minutes.
2. Other doors telltale status on IC shows always
ON.
Fault Detection Condition
This fault will be logged after the input switch test
routine execution. User has to operate the switch
manually during routine. If short to ground fault is
detected for Other Doors Ajar Switch, then this DTC
code will be returned with the Routine results.
Normal Operating Condition
There should not be any fault returned by routine
Probable Trouble Area
1. BCM connector Fault
2. Left side and Right side wiring harness short to
ground
3. Other Doors Ajar Switch is damaged or stuck or
faulty
4. BCM ECU fault
Healing Condition
1. Ignition OFF
ON
2. Clear DTC Command
Component Details:
Other Doors Switch, BCM connector
Functionality:
If the Other Doors Switch is Short to Ground, then the Other Doors state is in opened/ ajar state.
If the Other Doors is/ are opened, then BCM shall receive the feedback of Other Doors as open/ ajar
status.