Body Control Module

The Body Control Module (BCM) contains the theft deterrent system logic. The BCM reads the passlockTM data from the passlockTM sensor. If the passlockTM data is correct, the BCM will pass theft. The BCM will then transmit the code password to the VCM.

During the tamper mode the vehicle may start. The vehicle will then stall. If the BCM receives the wrong passlockTM data, the VTD will immediately go into the tamper mode. The tamper mode will lock-out the vehicle fuel injectors for 10 minutes. The SECURITY indicator will flash while the VTD is in the tamper mode.

If the passlock sensor sends a correct password to the BCM when the ignition is in the ON position, the BCM will send a fuel enable signal to the VCM. The VCM will not disable the fuel due to any BCM message for the remainder of the ignition cycle.