Kia Sorento 2001 General Information Manual page 1226

● Before replacing ECU, must remember and
recorded the original correct PIN.
● Perform "Neutralization" with the original
correct PIN and turn the ignition switch to OFF.
● Remove ECU and store the ECU with the tag
recorded serial inspection.
5
● Install new virgin or neutrailzed ECU.
● Perform "Normal Coding" with the original
correct PIN.
● Perform "Limphome" with the original correct
PIN and turn the ignition switch to START.
Check if engine starts.
● Before replacing ICU, must remember and
recorded the original correct PIN.
● Perform "Neutralization" with the original
correct PIN and turn the ignition switch to OFF.
● Removal ICU and store the ICU with the tag
recorded a serial inspection.
6
● Install new virgin or neutralized ICU.
● Perform "Normal Coding" with the original
correct PIN.
● Perform "Limphome" and turn the ignition
switch to START.
● Check if engine starts.
● Check if connection and wire harness
7
between ICU and ECU is normal.
● Perform "VIM CHECK" and "ECM CHECK"
with the original correct PIN.
● Check if ICU and ECU status is "Unlocked"
8
Limphome (override) procedure
This procedure allows the unlocking of the ICU by entering the PIN via the RR DEF SW, in case the transponder code
cannot be read or is unknown. 200ms after ignition-ON, a valid transponder code must have been received, otherwise the
ICU will remain "Locked" and the lamp will start blinking at 2Hz. This can happen through a malfunction of the
transponder, the reading device or an unknown transponder code.
The following grid indicates weather the passage into override procedure is possible according to the status of the ICU:
ICU Status
Learnt
Neutralized
Virgin
The PIN has to be entered using the following procedure:
1. Turn the ignition switch to ON. The "IMMO" indicator will blink at 2Hz (duty cycle ON/OFF=1).
2. Press the RR DEF SW and keep the switch pressed. Then, the "IMMO" indicator will blink at 0.6Hz (duty cycle
ON/OFF=0.2) after approximately 1.5 seconds.
3. Release RR DEF SW when the "IMMO" indicator blinks the same times as the number of PIN's (so-called passcode) first
digit. The following figure shows signal of IMMO indicator.
Yes
No
Yes
No
Yes
No
Yes
No
Is override procedure possible?
Yes
Yes
No
System is OK
Go to step 6.
System is OK
Go to step 7.
Go to step 8.
Repair or replace wire harness.
Check starting system.
Perform "Neutralization" with the original
correct PIN, remove new ECU and ICU, and
install original ECU and ICU.
Perform "Normal coding" with the original
correct PIN. Recheck system.