Kia Sorento 2001 General Information Manual page 1216

8. The operator depresses theRR DEF SE for 500ms minimum.
9. The horn sounds for 50ms.
10. The operator turns the key to IG ON position
11. The first transponder key is learned.
12. If the programming was OK, The lamp is ON for 250ms.
13. The operator starts the engine.
14. The operator turns the key to IG OFF position and replaces it by the second key in less than 10 seconds
15. The operator turns the key to IG ON position.
16. The second transponder key is learned
17. If the programming was OK, the lamp is ON for 250ms and the horn is activated for 50ms (Parameter 1)
18. The operator starts the engine.
19. The operator turns the key to IG OFF position.
20. 20. The status of the ICU is sent to the test tool (Hi-Scan Pro Tool).
Transponder key matching only
Transponder matching sequence : this procedure corresponds to matching keys procedure
1. The operator inserts a transponder key
2. The test tool sends the PIN to the ICU with option transponder matching and the number of keys to be programmed.
3. The ICU activates the horn for 50ms.
4. The operator turns the key to IG ON position
5. The first transponder key is learnt.
6. The lamp lights
7. The operator turns the key to IG OFF position and replaces it by the next key
8. The operator turns the key to IG ON position
9. The second transponder key is learned
10. The almp lights
11. Step 7 to 10 are repeated depending on the number of keys to be programmed
12. The status of the ICU is sent to the test tool.
Also, during the ignition test, the VIM detects the ECM type connected to it and stores the type in EEPROM.
ECM (or ECU) communication
The ECM communication is initiated by the ECM. The ICU decrypts this request to get three bytes of fix code; it
compares this fix code with ICU's MIN. If they are different or if the ICU is in the locked condition, ICU answers ECM with
dummydata. Otherwise, the answer is got from encrypted different code according the ICU status.
The ECM type is extracted front the ECM request and stored in EEPROM of ICU.
Relay communication
This function allows the communication between tester and ECM by shorting W-line and K-line together.
The ICU controls a relay, which permits to connect the K (Diagnostic)-line with the W (ECM serial data)-line and
disconnect the internal W-line pull-up, to allow communication between the ECM and an external tester.
If the ICU recognizes at falling edge on the K-line, with a low level lasting more than 10ms, it will close the relay and then
disable the pull-up.
If the request is a 5 bauds wake-up addressed to the ICU, or if the K-line is seen idle for 10 seconds or a falling edge ON
ignition input appaers, the pull-up is re-enabled and then the relay is released.
In key immobilizer
The product described in these specifications is a transponder-based immobilizer for vehicle. This product called
ICU(Inkey Control Unit) communicates with the engine management system in order to allow or not the engine start
depending therecognition or not of the transponder inserted in the key. This product complies with European directives
applicable inanti-theft systems for vehicles. The transpoder inserted in the key; two key are associated to vehicle. The
identification of a transponder by the ICU is done by reading-by magnetic coupling-the identifier code engraved on the
transponder identifier puts the ICU in an unlocked state until a falling edgd in ignition input; otherwise, it is in the locked