Ultrasonic Sensor

TRANSMITTER An intrusion sensor transmitter (2) 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. This unit is designed to work in conjunction with the intrusion sensor receiver to provide interior motion detection inputs to the intrusion module, which serves as the 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 transmitter is located in the passenger compartment, where it is concealed above the headliner. A molded plastic mounting bracket with two locating pins engages the holes in two locating tabs (4) integral to the transmitter housing and the housing is secured in place by two latch features integral to the bracket. Only a small dedicated molded plastic transducer trim bezel secured by a snap fit to the tubular ultrasonic transducer housing and extends vertically downward from the base of the transmitter housing is visible below the right rear corner of the headliner. The trim bezel has a small round opening that faces the front of the vehicle through which the transducer is aimed. Concealed within the molded plastic transmitter housing is the circuitry of the transmitter which includes an ultrasonic transmit transducer (1). The transmitter is connected through an integral connector receptacle (3) to the vehicle electrical system by a take out and connector of the overhead wire harness that is integral to the headliner. The intrusion sensor transmitter cannot be adjusted or repaired and, if ineffective or damaged, it must be replaced. The transmitter mounting bracket is serviced as a unit with the headliner. The transducer trim bezel is available for separate service replacement.

RECEIVER An intrusion sensor receiver (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. This unit is designed to work in conjunction with the intrusion sensor transmitter to provide interior motion detection inputs to the intrusion module, which serves as the 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 receiver is located in the passenger compartment, where it is concealed above the headliner. A molded plastic mounting bracket with three integral latch features is secured to the right front corner of the mini-overhead console housing and engages three latch tabs integral to the receiver housing. The ultrasonic receiver transducer (2) is aimed through a small dedicated round opening in the right side of the overhead console forward of the reading lamps and is the only evidence of the receiver that is visible from the passenger compartment. Concealed within the molded plastic receiver housing is the circuitry of the receiver which includes the receive transducer. The receiver is connected through an integral connector receptacle (3) to the vehicle electrical system by a take out and connector of the overhead wire harness that is integral to the headliner. The intrusion sensor receiver cannot be adjusted or repaired and, if ineffective or damaged, it must be replaced. The receiver mounting bracket is serviced as a unit with the overhead console.

TRANSMITTER An intrusion sensor transmitter (2) 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. This unit is designed to work in conjunction with the intrusion sensor receiver to provide interior motion detection inputs to the intrusion module, which serves as the 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 transmitter is located in the passenger compartment, where it is concealed above the headliner. A molded plastic mounting bracket with two locating pins engages the holes in two locating tabs (4) integral to the transmitter housing and the housing is secured in place by two latch features integral to the bracket. Only a small dedicated molded plastic transducer trim bezel secured by a snap fit to the tubular ultrasonic transducer housing and extends vertically downward from the base of the transmitter housing is visible below the right rear corner of the headliner. The trim bezel has a small round opening that faces the front of the vehicle through which the transducer is aimed. Concealed within the molded plastic transmitter housing is the circuitry of the transmitter which includes an ultrasonic transmit transducer (1). The transmitter is connected through an integral connector receptacle (3) to the vehicle electrical system by a take out and connector of the overhead wire harness that is integral to the headliner. The intrusion sensor transmitter cannot be adjusted or repaired and, if ineffective or damaged, it must be replaced. The transmitter mounting bracket is serviced as a unit with the headliner. The transducer trim bezel is available for separate service replacement.

RECEIVER An intrusion sensor receiver (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. This unit is designed to work in conjunction with the intrusion sensor transmitter to provide interior motion detection inputs to the intrusion module, which serves as the 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 receiver is located in the passenger compartment, where it is concealed above the headliner. A molded plastic mounting bracket with three integral latch features is secured to the right front corner of the mini-overhead console housing and engages three latch tabs integral to the receiver housing. The ultrasonic receiver transducer (2) is aimed through a small dedicated round opening in the right side of the overhead console forward of the reading lamps and is the only evidence of the receiver that is visible from the passenger compartment. Concealed within the molded plastic receiver housing is the circuitry of the receiver which includes the receive transducer. The receiver is connected through an integral connector receptacle (3) to the vehicle electrical system by a take out and connector of the overhead wire harness that is integral to the headliner. The intrusion sensor receiver cannot be adjusted or repaired and, if ineffective or damaged, it must be replaced. The receiver mounting bracket is serviced as a unit with the overhead console.

An intrusion sensor receiver (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. This unit is designed to work in conjunction with the intrusion sensor transmitter to provide interior motion detection inputs to the intrusion module, which serves as the 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 receiver is located in the passenger compartment, where it is concealed above the headliner. A molded plastic mounting bracket with three integral latch features is secured to the right front corner of the mini- overhead console housing and engages three latch tabs integral to the receiver housing. The ultrasonic receiver transducer (2) is aimed through a small dedicated round opening in the right side of the overhead console forward of the reading lamps and is the only evidence of the receiver that is visible from the passenger

compartment.

Concealed within the molded plastic receiver housing is the circuitry of the receiver which includes the receive transducer. The receiver is connected through an integral connector receptacle (3) to the vehicle electrical system by a take out and connector of the overhead wire harness that is integral to the headliner.

The intrusion sensor receiver cannot be adjusted or repaired and, if ineffective or damaged, it must be replaced. The receiver mounting bracket is serviced as a unit with the overhead console.

An intrusion sensor transmitter (2) 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. This unit is designed to work in conjunction with the intrusion sensor receiver to provide interior motion detection inputs to the intrusion module, which serves as the 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 transmitter is located in the passenger compartment, where it is concealed above the headliner. A molded plastic mounting bracket with two locating pins engages the holes in two locating tabs (4) integral to the transmitter housing and the housing is secured in place by two latch features integral to the bracket. Only a small dedicated molded plastic transducer trim bezel secured by a snap fit to the tubular ultrasonic transducer housing and extends vertically downward from the base of the transmitter housing is visible below the right rear corner of the headliner. The trim bezel has a small round opening that faces the front of the vehicle through which the transducer is aimed.

Concealed within the molded plastic transmitter housing is the circuitry of the transmitter which includes an ultrasonic transmit transducer (1). The transmitter is connected through an integral connector receptacle (3) to the vehicle electrical system by a take out and connector of the overhead wire harness that is integral to the headliner.

The intrusion sensor transmitter cannot be adjusted or repaired and, if ineffective or damaged, it must be replaced. The transmitter mounting bracket is serviced as a unit with the headliner. The transducer trim bezel is available for separate service replacement.

The intrusion sensor receiver operates only when it is energized by the intrusion module. The receiver monitors ultrasonic signals generated in the vehicle cabin by the intrusion sensor transmitter through a receive transducer. The receiver listens to the ultrasonic signals as they bounce off of objects in the vehicle interior and provides input signals to the intrusion module. If an object is moving in the interior, a detection circuit in the intrusion module senses this movement through the modulation of the returning signals that occur due to the Doppler effect. The intrusion module monitors the current draw of the receiver circuits to determine the condition of the receiver and, if the draw is too high or too low, it will store a Diagnostic Trouble Code (DTC) for any fault that is detected.

The hard wired circuits for the intrusion sensor receiver may be diagnosed using conventional diagnostic tools and procedures. However, conventional diagnostic methods will not prove conclusive in the diagnosis of the intrusion sensor receiver or the electronic controls and communication between other modules and devices that provide some features of the VTA system. The most reliable, efficient, and accurate means to diagnose the intrusion sensor receiver or the electronic controls and communication related to intrusion sensor receiver operation requires the use of a diagnostic scan tool.

The intrusion sensor transmitter operates only when it is energized by the intrusion module. The transmitter generates ultrasonic signals into the vehicle cabin through a transmit transducer. Then the intrusion sensor receiver listens to the returning signals as they bounce off of objects in the vehicle interior and provides input

signals to the intrusion module. If an object is moving in the interior, a detection circuit in the intrusion module senses this movement through the modulation of the returning signals that occur due to the Doppler effect. The intrusion module monitors the current draw of the transmitter circuits to determine the condition of the transmitter and, if the draw is too high or too low, it will store a Diagnostic Trouble Code (DTC) for any fault that is detected.

The hard wired circuits for the intrusion sensor transmitter may be diagnosed using conventional diagnostic tools and procedures. However, conventional diagnostic methods will not prove conclusive in the diagnosis of the intrusion sensor transmitter or the electronic controls or communication between other modules and devices that provide some features of the VTA system. The most reliable, efficient, and accurate means to diagnose the intrusion sensor transmitter or the electronic controls and communication related to intrusion sensor transmitter operation requires the use of a diagnostic scan tool.

1. Disconnect and isolate the battery negative cable. 2. Remove the overhead console from the headliner. Refer to REMOVAL . 3. Locate the intrusion sensor receiver (1) in the mounting bracket (4) on the right front corner of the overhead console housing (3). 4. Disconnect the take out of the overhead wire harness from the connector receptacle (5) on the rearward end of the receiver housing. 5. Release the three latch features (2) of the mounting bracket and disengage the receiver from the bracket.

1. Disconnect and isolate the battery negative cable. 2. Pull the bezel (1) straight down from the headliner (3) to unsnap it from the transducer housing (2) of the intrusion sensor transmitter. Be certain to take the appropriate precautions not to soil or damage the headliner. 3. Remove the trim from the upper liftgate opening. Refer to REMOVAL . 4. Partially remove the quarter trim panel from both upper D-pillars. Refer to REMOVAL .

5. Carefully pull down the right rear edge of the headliner (1) from the upper liftgate opening far enough to reach between the headliner and the roof panel to access the transmitter (2) and mounting bracket (4) on the headliner substrate. 6. Disconnect the take out of the overhead wire harness (1) from the connector receptacle on the right side

of the transmitter housing. 7. Release the two latch features (3) of the mounting bracket and disengage the transmitter from the locating pins of the bracket. 8. Remove the transmitter from between the headliner and the roof panel.

1. Position the intrusion sensor receiver (1) to the mounting bracket (4) on the right front corner of the overhead console housing (3). 2. Press the receiver down until the three latch features (2) of the bracket are fully engaged.

3. Reconnect the take out of the overhead wire harness to the connector receptacle (5) on the rearward end of the receiver housing. 4. Reinstall the overhead console onto the headliner. Refer to INSTALLATION . 5. Reconnect the battery negative cable.

1. Carefully pull down the right rear edge of the headliner from the upper liftgate opening far enough to reach between the headliner and the roof panel to position the intrusion sensor transmitter (2) over the locating pins of the mounting bracket (4) on the headliner substrate. 2. Press the transmitter down until the two latch features (3) of the mounting bracket are fully engaged.

3. Reconnect the take out of the overhead wire harness (1) to the connector receptacle on the right side of the transmitter housing. 4. Reinstall the quarter trim panel onto both upper D-pillars. Refer to INSTALLATION . 5. Reinstall the trim onto the upper liftgate opening. Refer to INSTALLATION .

6. Position the bezel (1) over the transducer housing (2) of the intrusion sensor transmitter and press it straight upward until it snaps into place against the headliner (3). Be certain to take the appropriate precautions not to soil or damage the headliner. 7. Reconnect the battery negative cable.

SENTRY KEY REMOTE ENTRY MODULE