Kia Sportage: Schematic Diagrams, Description and Operation
Schematic Diagrams
Circuit Diagram
![Description and Operation](images/books/1921/13/index%2016.png)
Description and Operation
Description
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
theft.
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
dedicated communications
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
turned OFF.
- 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.
![Components Operations](images/books/1921/13/index%2017.png)
Components Operations
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)](images/books/1921/13/index%2018.png)
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.
[USA]
![[Canada]](images/books/1921/13/index%2019.png)
[Canada]
![TRANSPONDER (Built-in keys)](images/books/1921/13/index%2020.png)
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.
[Key Type]
![Antenna coil](images/books/1921/13/index%2021.png)
Antenna coil
The antenna coil (A) has the following functions.
![Repair procedures](images/books/1921/13/index%2022.png)
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Replacement
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. Al
Repair procedures
Removal
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 assem
SEE MORE:
Speed Limit indicator
Set speed
You can set the speed limit when you do
not want to drive over a specific speed.
If you drive over the preset speed limit,
the warning function operates (set
speed limit will blink, and chime will
sound) until the vehicle speed returns
within the s
Specifications
Specifications
VFS: Variable Force Solenoid
Sensors
Input Speed Sensor
Type: Hall effect sensor
Specifications
Output Speed Sensor
Type: Hall effect sensor
Specifications
Oil Temperature Sensor
Type: Negative thermal coefficien