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ELECTRICAL
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1.26.2 IMMOBILIZER SYSTEM 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
(A) This is valid for 1.5L CRAIL DIESEL engine EMS ECU’s
No.
Text indicted
Condition
Description
Normal/ Abnormal
1
Immobilizer
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
Immobilizer 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)
4
Immobilizer code
programmed in EMS
and locked
Pairing operation OK
AES key is written in
to
EMS and locked.
Normal
5
Fast restart inactive
-
-
-
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 Vehicle will not start
Abnormal
7
Free start inactive
-
After pairing of EMS
ECU
& Immobilizer, the
free starts are inactive
Normal
8
Immobilizer CAN
communication CAN
OFF/BUS OFF
Refer immobilizer
section
CAN communication
error (bus off/mute)
Abnormal
Immobilizer CAN
communication “OK”
-
-
Normal