4829 / 4910
Transponder & CAN based Immobilizer (Continental)
Part Replacement handling – Service Documentation
TITLE
: Immobilizer (Conti) Service Manual-Aria Eagle
xxxx
Date
: 28-08-2015
Version
: 0.1
Page
:
11 of 25
Prepared :
Amanulla Bugga
Approved: Dinesh G Dodmane
This specification is the exclusive property of Tata Motors Limited. Without their consent it may not be
reproduced or given to third parties
.
The above specifications are subject to change and therefore
suppliers are requested to refer the latest one.
CONTROLLED COPY FOR RESTRICTED CIRCULATION
3.2.
Immobilizer Status in EMS ECU:
The information given in table below is the status of Immobilizer system in EMS & it can be accessed by
steps given below.
Steps
1. Connect the EMS ECU diagnostic tester to the Diagnostic connector in the vehicle
2. Start the communication
3. Go to "Engine parameter"
4. Select “Electronic key” and press “Start”
5. The diagnostic tester will show the following
No.
Text indicted
Condition
Description
Normal/
Abnormal
1
Immo programmed in
EMS
-
EMS ECU software is
Immobilizer enabled
Normal
Virgin ECU
-
-
Abnormal
2
Engine starting
enabled by EMS
Original E-Key in
SCL
Vehicle Ready to start
Normal
Engine starting
disabled by EMS
No/wrong E-Key
in SCL
Vehicle will not start
Abnormal
3
AESKEY code
programmed in EMS
but not locked
Pairing operation
not done properly
AES key is written in to
EMS but not locked
Abnormal
(displayed only if
exists)
AESKEY code
programmed in EMS
but locked
Pairing operation
OK
AES key is written in to
EMS and locked.
Normal
4
Immo learnt
Pairing operation
OK
AES key is written in to
EMS and locked.
Normal
Immo blank
Pairing operation
OK
AES key is written in to
EMS and locked.
Abnormal
5
Antiscan inactive
Pairing operation
OK
Vehicle Ready to start
Normal
Antiscan active
Pairing NOK
Vehicle will not start
Abnormal
6
Key code OK
/Authentication OK
Successful
authentication &
AES key is OK
AES key for EMS ECU
& Immobilizer are
same
Normal
No Valid key
detected/ bad
Authentication
Check the DTC
code in section 10
Vehicle will not start
Abnormal
7 Not Used
-
Not Used
Normal
8
Immo CAN
communication CAN
OFF/BUS OFF
Refer Section 8
CAN communication
error (bus off/mute)
Abnormal
Immo CAN
communication OK
-
-
Normal