Theory Of Operation

Whenever a Fob Integrated Key (FOBIK) is inserted in the Wireless Ignition Node (WIN), the WIN performs a self test and resynchronization routine. During the routine, the WIN interrogates the FOBIK for the secret key information and performs a CAN Bus message handshake with the PCM to start the vehicle. The PCM must reply to the WIN that the secret key information matches to initiate the start sequence or this code will set on the 20th attempt.