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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: 375 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.
Trouble Shooting:
B1306 - 11: Left Rear Door Ajar Switch - Circuit Short to
Ground
START
Connect Diagnostic tool and Run Input Test Routine and operate the
switches as mentioned in the input switch test routine specification.
Is DTC B1306 – 11
logged by Routine?
Disconnect vehicle battery connection.
(Please follow the safety guidelines)
Check connection between BCM and Rear
Left door switch
Are connectors
loose?
Correct connector fault
(Terminals Bend)
1.Remove BCM Connector.
2.Perform visual check of connectors for pins bent or damaged
Is connector faulty?
STOP
1. Close all doors
2. Check continuity between BCM connector pin
[C4-17]
Harness side) with Ground
[C1-34/C1-47]
Continuity Found?
1. Remove Rear Left Door Switch mating connector
2.Perform visual check of connectors for pin bend or damaged
Reconnect connectors firmly
Connector
Faulty?
Correct Connector fault
(Terminal Bend)
NO
YES
YES
NO
YES
YES
YES
NO
NO
NO
Check if Rear Left door switch input[wiring harness
side] is shorted to ground
[C104-1].
Correct
Rear Left door switch side
wiring harness
(Short to Ground)
1. Close and Open the Rear Left door
2. Check if Rear Left Door switch is operating?
Is Rear Left Door
switch is operating?
Reconnect all connectors firmly
NO
YES
Correct BCM side wiring harness
( Short to Ground)
Continuity Found?
YES
NO
NO
Connect battery and other connectors of BCM ECU, if disconnected.
BCM ECU Faulty
Replace BCM ECU
DTC’s confirmation:
After rectification, ensure the following points by using TML diagnostic tool before handing over to customer.