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03-June-2014
Prepared Author
:
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Review & approved by
: R A Rode (ERC-E&E)
Page: 57 of 67
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.
B163A-12: Vehicle immobilizer control module Status Indicator short to Ground or Open Circuit
Overview:
ISO Code
B163A-12
DTC simple Description
Immobilizer Status LED short to battery supply
Customer Symptom
No impact
Fault Effects (On Vehicle)
No Impact
Lamp Status (If Any)
Off
Fault Detection Condition
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Probable Trouble Area
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Healing Condition
Off
Component Details:
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Preliminary Checks:
Not applicable
Trouble Shooting:-
Step Checks
IF YES
IF NO
1
Check the continuity between immo pin 5 & instrument
cluster pin 20 any short to supply.
Rectify fault
Go to next step
2
Change the instrument cluster
Go to next step
3
Replace the immobilizer
DTC’s confirmation:-
Before handover to customer, ensure that vehicle will start without any error
Circuit Schematic Diagram:
Please refer the immobilizer circuit schematic
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