Kia Sportage: Schematic Diagrams, Description and Operation
Description and Operation
The immobilizer system will disable the vehicle unless the proper ignition
key is used, in addition to the currently
available anti-theft systems such as car alarms, the immobilizer system aims to
drastically reduce the rate of auto
1. Encrypted SMARTRA type immobilizer
- The SMARTRA system consists of a passive challenge - response (mutual
authentication) transponder located
in the ignition key, an antenna coil, an encoded SMARTRA unit, an indicator
light and the PCM (ECM).
- The SMARTRA. communicates to the PCM (ECM) (Engine Control Module) via a
line. Since the vehicle engine management system is able to control engine
mobilization, it is the most suitable
unit to control the SMARTRA.
- When the key is inserted in the ignition and turned to the ON position,
the antenna coil sends power to the
transponder in the ignition key. The transponder then sends a coded signal
back through the SMARTRA unit
to the PCM (ECM).
- If the proper key has been used, the PCM (ECM) will energize the fuel
supply system. The immobilizer
indicator light in the cluster will simultaneously come on for more than
five seconds, indicating that the
SMARTRA unit has recognized the code sent by the transponder.
- If the wrong key has been used and the code was not received or
recognized by the PCM (ECM) the
indicator light will continue turning off until the ignition switch is
- If it is necessary to rewrite the PCM (ECM) to learn a new key, the
dealer needs the customer's vehicle, all its
keys and the Ні-scan (pro) equipped with an immobilizer program card. Any
key that is not learned dining
rewriting will no longer start the engine.
- The immobilizer system cart store up to eight key codes.
- If the customer has lost his key, and cannot start the engine, contact
Kia motor service station.
PCM (Power Train Control Module)
1. The PCM (ECM) (A) carries out a check of the ignition key using a special
encryption algorithm, which is
programmed into the transponder as well as the PCM (ECM) simultaneously. Only if
the results are equal, the
engine can be started. The data of all transponders, which are valid for the
vehicle, are stored in the PCM (ECM).
ERN (Encrypted Random Number) value between EMS and encrypted smartra unit is
checked and the validity
of coded key is decided by EMS.
ENCRYPTED SMARTRA unit (A)
The SMARTRA carries out communication with the built-in transponder in the
ignition key. This wireless
communication runs on RF (Radio frequency of 125 kHz). The SMARTRA is mounted
behind of the crash pad
close to center cross bar.
The RE signal from the transponder, received by the antenna coil, is converted
into messages for serial
communication by the SMARTRA device. And, the received messages from the PCM
(ECM) are converted into an
RF signal, which is transmitted to the transponder by the antenna.
The SMARTRA does not carry out the validity check of the transponder or the
calculation of encryption algorithm.
This device is only an advanced interface, which converts the RF data flow of
the transponder into serial
communication to the PCM (ECM) and vice versa.
TRANSPONDER (Built-in keys)
The transponder (A) has an advanced encryption algorithm. During the key
teaching procedure, the transponder will
be programmed with vehicle specific data. The vehicle specific data are written
into the transponder memory. The
write procedure is once only; therefore, the contents of the transponder can
never be modified or changed.
The antenna coil (A) has the following functions.
Problems And Replacement Parts:
Replacement Of ECM And SMARTRA
In case of a defective ECM, the unit has to be replaced with a "virgin" or
"neutral" ECM. All keys have to be taught
to the new ECM. Keys, wh
1. Disconnect the negative (-) battery terminal.
2. Remove the crash pad lower panel.
(Refer to the BD group - "Crash pad")
3. Remove the steering column assembly.
(Refer to the ST group - "steering colu
Your vehicle is equipped with a side air
bag in each front seat.
* The actual air bags in the vehicle may
differ from the illustration.
The purpose of the air bag is to provide
the vehicle's driver and/or the front passenger
Reverse Parking Distance Warning will
help warn the driver if a person, an animal
or an object is detected within a certain
distance when the vehicle is moving
Rear ultrasonic sensors
Refer to the picture above