In ICU system, scantool is mainly used for diagnosis. besides this, registration of key and neutralization of PCM is executed by scantool.
The DTC will set, if invalid PIN or password is inputted for more than 3 times using the scan tool.
After entering the Key registration mode, the DTC will set if a PIN is entered that is differentto "LEARNT" ICU for more than 3 times.
After entering the Neutral mode, the DTC will set if a PIN is entered that is different to "LEARNT" ICU for more than 3times.
After entering the Change User Password, the DTC will set if a PIN is entered that is different to "LEARNT" ICU for more than 3times.
After entering the Limp Home mode, the DTC will set if a PIN is entered that is different to "LEARNT" ICU for more than 3times.
Item
Detecting Condition
Possible Cause
DTC Strategy
Communication status check between PCM and scantool
Check for "LEARNT" PCM PIN code
Check for "LEARNT" PCM password
Threshold value
In the PIN or password inputting procedure
Detecting time
invalid PIN or password is inputted for more than 3 times
DTC Erasing
Condition
Without a fault or using a scantool