Anti-Theft System: Operation

When mechanical key turns the PASSLOCK(R) lock cylinder, a Resistance Code (R-Code) is created by a rotating magnet turning past a stationary hall effect sensor. R-Code is sent to the PASSLOCK(R) module. The module determines the validity of the R-Code within a preset time window, then send a coded password to the Vehicle Control Module (VCM), which then allows the fuel injectors to operate normally.

If PASSLOCK(R) module receives the wrong R-Code, VCM will go into LONG TAMPER MODE. During the long tamper mode, the fuel injectors will be shut off for 10 minutes and the SECURITY indicator light will flash. Vehicle may crank and temporarily start during tamper mode, but will soon stall due to fuel shut-off.

If coded password is not received or is incorrect by the time engine starts, VCM will enter lock-out mode. If a large magnet is placed near PASSLOCK(R) sensor or a tamper (wrong key) exists, VCM will enter lock-out mode. Lack of data from PASSLOCK(R) sensor to PASSLOCK(R) module will set DTCs and illuminate SECURITY indicator light.