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ELECTRICAL
170
8.13 IMMOBILIZER SYSTEM
1. DESCRIPTION:
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.
Immobilizer comes with two Electronic
keys (
E-key
).
! CAUTION
As CAN communication protocol doesn’t work
beyond 18V, vehicle will not start under “Jump
Start with voltage > 18 V” conditions.
ABBRIVATIONS:
SCL - Steering Column Lock
ICU
- Immobilizer control unit
EMS - Engine management system
ECU - Electronic control unit
DTC - Diagnostic Trouble Code
AES - Advanced encryption standard
E-Key - Electronic Key (
With transponder
)
W/H - Wiring Harness
ASK - Amplitude Shift Keying
BCM - Body Controller Motor
CAN - Controller Area Network
GND - Ground
K Line - Bi-directional serial data line diagnostic
2. BASIC SPECIFICATIONS:
1. Operating voltage range
: 8 V to 16 Vdc
2. Operating temperature range
: -40
°
C to +85
°
C
3. Storage Temperature range
: -40
°
C to +85
°
C
4. Standby current
: 0.6 mA typical. @13.5 Vdc
5. Vehicle mounting location
: Steering column along with ignition switch
6. Diagnostics
: KWP2000 protocol over k-line
7. Unlock Mechanism
: CAN 2.0B based