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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: 371 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.
B1308 - 12: Passenger Door Ajar Switch - Circuit short to Battery or Open Circuit
Overview:
ISO Code
B1308 - 12
Customer Symptom
1. Interior Roof lamp in Auto mode selection
doesn’t operate when Passenger door is
opened.
2. The IC shows Passenger Door as closed status,
even if the Passenger door is opened as
presumed by the customer.
3. The Mis-lock sound does not occurs on RKE
lock command.
4. The vehicle will get lock on RKE lock command.
Fault Effects (On Vehicle)
1. Interior Roof lamp in Auto mode selection does
not operate when Passenger door is opened.
Lamp Status (If Any)
1. Roof lamp in Auto mode selection is OFF.
2. IC shows Passenger Door closed status always
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 battery or open
circuit fault is detected for Passenger Door 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 wiring harness Short to battery or open
circuit
3. Passenger Door Ajar Switch is damaged or stuck
or faulty
4. BCM ECU fault
Healing Condition
1. Ignition OFF
ON
2. Clear DTC Command
Component Details:
Passenger Door Switch, BCM connector
Functionality:
If the Passenger Door Switch is short to Battery or Open Circuit, then the Passenger door state is in
closed state.
If the Passenger door is closed, then BCM shall receive the feedback of Passenger door as closed
status.
Preliminary Checks:
1. Check Battery Voltage (12.5 V & above)
2. Check ECU pins for oxidation, bending & damage.