SsangYong Actyon Sports II. Manual - part 62

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(14) Immobilizer control

A. Overview

The Immobilizer System provides an additional theft deterrent to the vehicle in which it is installed and 

prevents it from being started by unauthorized persons. The transponder integrated in the key and the 

engine control unit have the same code. When the ignition key with the integrated transponder is turned 

to the ON position, the ECU (Engine Control Unit) checks the crypto code of the key and, if correct, 

allows the vehicle to start the engine.

For details, refer to Chapter "Immobilizer". 

B. Components

Basic components (ignition key system)

▶

D20DTR ECU

Immobilizer antenna

Instrument cluster

Immobilizer key

Start motor

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Key approval process

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When turning the ignition switch to ON position, the power is supplied to BCM and ECU. ECU 

communicate with the immobilizer key to check if it is valid crypto code. If it is valid, ECU start to control 

the engine when turning the ignition switch to START position. The system has 10 seconds of valid time-

out period. If the engine does not start in this period, the key approval process should be done again.

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(15) CDPF control

A. Overview

As the solution for environmental regulations and PM Particle Material) of diesel engine, the low emission 

vehicle is getting popular. This vehicle is equipped with an extra filter to collect the soot and burn it again 

so that the amount of PM in the exhaust gas passed through the DOC (Diesel Oxidation Catalyst) is 

reduced. The CDPF (Catalyst & Diesel Particulate Filter) is an integrated filter including DOC (Diesel 

Oxidation Catalyst) and DPF (Diesel Particulate Filter).

For details, refer to Chapter "CDPF".

B. Components

Oxygen 

sensor

Front 

EGT sensor

CDPF

 (DOC + DPF)

Rear 

EGT sensor

Differential pressure 

sensor

D20DTR ECU

Electric throttle body

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C. Input/Output for CDPF control