1.TP(Transponder)
2.Antenna Coil
Transponder is located near the Key knob and communicates while ignition ON translates encrypted PIN data back and forth.
Reference)
Transponder does not need a battery, only receives energy from the vehicle.
Transponder is all in one with the Key. Therefore, transponder cannot be removed or replaced and is semi-permanent unless damaged by induced shock.
If ICU detects invalid transponder data, the DTC will set.
Item
Detecting Condition
Possible Cause
DTC Strategy
Data status receiving from transponder
Faulty Transponder
Threshold value
When the coil supplies energy to the transponder which in turn accumulates energy in the condenser, ICU transmits the data(40bit) to the transponder
If ECM detects difference between data receiving from transponder and predetermined value, DTC will set
Detecting time
1 time
DTC Erasing
Condition
Without a fault during 30 trips or using a GDS.
Fig.1) A normal signal waveform of antenna and immobilizer communication when IG key(TP : Transponder) is OFF to ON.