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Vehicle Platform: Tiago,Tigor & Osprey
ECU Name: Hella Body Control Module (BCM)
DTC Troubleshooting Data
Version: 2.0
Date: 22-10-2018
Author: Parag K
Page: 284 of 737
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.
B222D -11: Low Beam 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 B222D-11
logged by Routine?
Disconnect vehicle battery connection.
(Please follow the safety guidelines)
Check BCM and combi switch connectors
for terminal backout
Are connectors
loose?
Correct connector fault
(Terminals Bend)
1.Remove BCM Connector.
2.Perform visual check of connectors for pins bent or damaged etc.
Is connector faulty?
STOP
1. Put combi switch in OFF state.
2. Check continuity between BCM connector pin
[C4-6
] Harness side) with Ground
[C1-34/C1-47]
Continuity Found?
1. Remove Combi switch mating connector
2. Perform visual check of connectors for pin bend or damaged etc.
Reconnect connectors firmly
Connector
Faulty?
Correct Connector fault
(Terminal Bend)
BCM ECU Faluty
Replace BCM ECU
NO
YES
YES
NO
YES
YES
YES
NO
NO
NO
Check if Combi switch Low beam input[wiring harness
side] is shorted to ground
Correct combi switch side wiring harness
(Short to Ground)
Check if combi switch is faulty / two terminals of low beam are
shorted to each other or shorted to ground pin terminal
Switch Faulty?
Replace combi switch
1.Remove all BCM connectors
2.Take out low beam wire
[c4-6]
from connector
3.Reconnect all connectors including battey
4.Check if low beam is ON?
Low Beams ON?
Reconnect all connectors firmly
YES
NO
YES
NO
Correct BCM side wiring harness
( Short to Ground)
Continuity Found?
YES
NO