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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: 399 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.
B1601 - 11: Bonnet State Switch - Circuit Short to Ground
Overview:
ISO Code (DTC Code)
B1601 - 11
Customer Symptom
1. The IC shows Bonnet State as open status, even
if the Bonnet is 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.
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. Bonnet 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 Bonnet State 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. Front side wiring harness short to ground
3. Bonnet State Switch is damaged or stuck or
faulty
4. BCM ECU fault
Healing Condition
1. Ignition OFF
ON
2. Clear DTC Command
Component Details:
Bonnet State Switch, BCM connector
Functionality:
If the Bonnet State Switch is Short to Ground, then the Bonnet state is in opened/ ajar state.
If the Bonnet State is opened, then BCM shall receive the feedback of Bonnet State as open/ ajar
status.
Preliminary Checks:
1. Check Battery Voltage (9V-16V)
2. Check ECU pins for oxidation, bending & damage.
Trouble Shooting: