Kia Sorento 2001 General Information Manual page 1215

2001 > 1.8L DOHC >
Diagnostic function
The diagnostic communication is initiated by an external diagnostic tool (Hi-Scan Pro). Its purpose is to:
• Perform an end-of-line test at the car assembly plant consisting of:
• Programming the PIN
• Matching the ECM to the ICU
• Matching the transponder keys
• doing a complete check of the system
• Program a replacement ECM or ICU (neutralization)
• Program replacement keys
Diagnostic service
Refer to Hi-Scan Pro Tool Manual.
• Normal coding
• Neutralization
• Code change
• key only matching
• VIM check
• ECM check
Passcode (or PIN) request
This service is used to enter the PIN.
Test sequence request
This frame is sent immediately after the Passcode frame and starts a test sequence either with or without transponder
key matching. If the test sequence request is not received before the end of the time-out, the ICU sends a response
frame containing ＄FF FF as status.
This service can be allowed only when the ICU status is not learnt by setting an EEPROM in case of learnt status,
the sequence is not processed and the PIN is not changed.
Consider a virgin ICU. By performing a full test sequence:
• either without key matching,
• or with key matching,
the ICU becomes learnt, and unlocked. The ICU will remain unlocked while the ignition ON. However, if a full test
sequence is performed with key matching (and two keys are matched : the sequence was successful), then the ICU is
learnt and unlocked, but a passive arming is armed. In that case, once the passive arming is elapsed, or if ignition is ON
with an unknown key, the ICU is locked.
Key management
In case of key matching (from a full test sequence or a key matching only).
• no key is learnt : the previous keys are kept
• at least 1key is learnt : the previous keys are erased, and replaced by the new ones.
Case of virgin ICU
In virgin status the key matching service is not allowed.
DIAGNOSTIC SEQUENCE
1. The operation inserts a transponder key.
2. The test tool sends the PIN with option full test (program PIN) and a diagnostic request to the ICU.
3. The PIN is programmed and the ICU status changes to learnt
4. The ICU activates the horn for 50ms (Parameter 1)
5. The operator turns the key to IG ON position
6. The ICU communicates with the ECM and unlocks it.
7. The operator turns the key to IG OFF position.