An intrusion module (1) is part of the premium version of the Vehicle Theft Alarm (VTA) in the Vehicle Theft Security System (VTSS). The premium version of the VTA is only available in vehicles built for certain markets, where the additional features offered by this system are required. The intrusion module is located under the instrument panel within the passenger compartment. This unit is designed to work in conjunction with the remote microwave intrusion sensor transducers to provide interior motion detection and serves as an interface between the Totally Integrated Power Module (TIPM), the ElectroMechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN) and the alarm siren.

The molded plastic intrusion module housing has two integral mounts (2) that secure the module with two screws to U-nuts on a stamped steel mounting bracket. The mounting bracket is secured with two additional U-nuts and screws to the lower instrument panel reinforcement behind the steering column opening cover under the driver side instrument panel. Concealed within the module housing is the electronic circuitry of the module, which includes a microprocessor. The module is connected to the vehicle electrical system through an integral connector receptacle (3) by a dedicated take out and connector of the instrument panel wire harness.

The intrusion module unit cannot be adjusted or repaired and, if ineffective or damaged, it must be replaced.