Grand Caravan V6-3.8L (2009)
Alarm System Transponder: Description and Operation
Transponder Key, with FOBIK - Operation
OPERATION
Each FOBIK has a unique transponder identification code permanently programmed into it by the manufacturer. Likewise, WIN has a unique "Secret
Key" code programmed into it by the manufacturer as well. When a FOBIK is programmed into the memory of the WIN, the WIN stores the transponder
identification code from the FOBIK, and the FOBIK learns the "Secret Key" code from the WIN. Once the FOBIK learns the "Secret Key" code of the
WIN, it is also permanently programmed into the transponder's memory. Therefore, blank keys for the WIN must be programmed by the WIN. Refer to
Electrical, Vehicle Theft Security, FOBIK Key, Standard Procedure - FOBIK Programming.
The FOBIK transponder is within the range of the WIN transceiver antenna ring when it is inserted into the ignition WIN. When the ignition switch is
turned to the ON position, the WIN communicates with the FOBIK via a radio frequency (RF) signal. The WIN will determine if a valid key is present
based on the information it receives from the FOBIK. If a valid key is detected, that fact is communicated to the PCM via the PCI bus and the vehicle is
allowed to continue running. If an invalid key is received by the PCM or no status at all is communicated, the vehicle will stall after two (2) seconds of
running. The indicator light will be flashing at this point. The FOBIK transponder can not be repaired. If it is faulty or damaged, it must be replaced.
Common communication problems:
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Two transponder keys too close together.
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Speed Pass too close to transponder key.
Solid indicator that there is a system failure.
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Loss of PCM communication.
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Failed antenna circuit.