"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 transponder is not in the place, DTC will set.
If 2 transponders are piled together and approach at the antenna coil, DTC is set.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Data status receiving from transponder | 1. Faulty Transponder caution If 2 transponders are piled together and approach at the antenna coil, DTC will set |
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 1. If no data(serial no. etc) transmitted by transponder, DTC will set 2. If ECM/PCM detects no transponder in the magnetic field, DTC will set | |
Detecting time |
•
5 consecutive times after ignition On | |
DTC Erasing Condition |
•
Without a fault or using a GDS |
Fig.1) A normal signal waveform of antenna and immobilizer communication when IG key(TP: Transponder) is OFF to ON.
