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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: 377 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.
B1306 - 12: Left Rear Door Ajar Switch - Circuit short to Battery or Open Circuit
Overview:
ISO Code
B1306 - 12
Customer Symptom
1. Interior Roof lamp in Auto mode selection
doesn’t operate when Rear Left door is opened.
2. The IC shows Rear Left door as closed status,
even if the Rear Left 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)
Interior Roof lamp in Auto mode selection does not
operate when L door is opened.
Lamp Status (If Any)
1. Roof lamp in Auto mode selection is OFF.
2. IC shows Rear Left 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 Left Rear 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. Left Rear 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:
Rear Left Door Switch, BCM connector
Functionality:
If the Rear Left Door Switch is short to Battery or Open Circuit, then the Rear Left door state is in
closed state.
If the Rear Left door is closed, then BCM shall receive the feedback of Rear Left door as closed status.
Preliminary Checks:
1. Check Battery Voltage (12.5 V & above)
2. Check ECU pins for oxidation, bending & damage.
Trouble Shooting: