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Immobilizer –DTC Troubleshooting Data
Version: 1.
2
Date:
03-June-2014
Prepared Author
:
Sarang K/Mithipati P
Review & approved by
: R A Rode (ERC-E&E)
Page: 6 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.
B163D-13: Lost Communication with antenna circuit open
Overview:
ISO Code
B163D-13
DTC simple Description
No communication with immo antenna
Customer Symptom
Vehicle cannot be started
Fault Effects (On Vehicle)
Vehicle cannot be started
Lamp Status (If Any)
OFF
Fault Detection Condition
Fault
Normal Operating Condition
At ignition On
Probable Trouble Area
Authentication between EMS & Immo is successful
Healing Condition
Immobilizer
Component Details:
Immobilizer system is designed to prevent vehicle theft by electronically disabling the engine starting system. The engine
can be started only with vehicle’s original immobilizer ignition key, which has an electronic identification programmed
code. Immobilizer unit (ICU) is an add-on part on the ignition switch, fitted on the steering column. The engine can be
started only with the vehicle’s original immobilizer ignition key. The electronic key communicates the identification code to
ICU when the key is turned to the "Ignition ON" position.
Preliminary Checks:
Check immobilizer & mounting on ignition lock.
Trouble Shooting:-
Step Checks
IF YES
IF NO
1. Any physical damage of immobilizer
Replace the immo
with new good one
Go to next step 3
2
Immobilizer mounting is correct/it should be tightly
screwed up on igniting lock
Correct mounting
3 Replace the immobilizer & pair with ECU
DTC’s confirmation:-
After rectification, ensure the following points by referring engine parameters using TML diagnostic tool before handing
over to customer.
Check the status of immobilizer in EMS ECU.
Start the EMS ECU diagnostic tool
Go to Engine parameter
Select the electronic key
The Status of immobilizer should be as follows:
Immo code programmed in EMS
Engine starting enable
Valid keys detected & Authentication successful
CAN communication Ok