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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: 807 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.
Trouble Shooting:-
B1326-11- Express Down Output Circuit short to Ground
START
Connect Diagnostic tool and Run Input Test Routine and operate the
switches as mentioned in the input switch test routinespecification.
Is DTC B1326 – 11
logged by Routine?
Disconnect vehiclebattery connection.
(Please follow thesafety guidelines)
Check connection between BCMand
Express Down Switch Output Pin
Are connectors
loose?
Correct connector fault
(Terminals Bend)
1.RemoveBCM Connector.
2.Perform visual check of connectors for pins bent or damaged
Is connector faulty?
STOP
1.Press Express down switch
2. Check continuity between BCM connector pin)
with Ground
Continuity Found?
1. Remove Express down switch
2.Perform visual check of connectors for pin bend ordamaged
Reconnect connectors firmly
Actuator Faulty?
Correct Connector fault
(Terminal Bend)
NO
YES
YES
NO
YES
YES
YES
NO
NO
NO
Check if Express Down Output Signal is shorted to
ground
Correct the fault
(Short to Ground)
Operate the Express Down switch
Check if Down action
is successful?
Reconnect allconnectorsfirmly
NO
YES
Correct BCMside wiring harness
( Short to Ground)
Continuity Found?
YES
NO
NO
Connect battery and other connectors of BCM ECU, if disconnected.
BCMECU Faulty
ReplaceBCM ECU