3.1.12-2
CS35 2013.04
3.1.12-2Engine Immobilizer System
Description and Operation
System Overview
On the vehicles with engine immobilizer control-
ler , if you want to start the engine, the starter
key (password transponder) shall pass through
the ELF magnetic fields and the body control
module validation. If the body control module
validation of the starter key (password transpon-
der) fails, the engine control module obtains the
vehicle fortification not releasing information
from the body control module by K-Line network,
turn the ignition key to the "ST" position, and the
engine can not be started.
Engine immobilizer system consists of the follow-
ing main components:
1. Password transponder (remote key)
2. Immobilizer controller (IMMO)
3. Body control module (BCM)
4. Engine control module (ECM)
When the ignition switch is at "ON" position, the
password transponder of the key passes through
the ELF magnetic fields and the body control
module for validation. After the successful valida-
tion, the body control module communicates with
the engine control module via K-Line network,
allowing the engine control module to start the
engine.
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