Adaptive Speed Control Sensor And Bracket - Description

DESCRIPTION





The adaptive speed control sensor (1) (also known as the Adaptive Cruise Control/ACC sensor or module, or the radar sensor or module) is located on a bracket secured near the center of the underside of the front bumper support member of the Front End Module (FEM) behind the front fascia. The stamped steel ACC sensor mounting bracket is secured by two screws to a bracket on the bumper support member. This sensor is also the primary component of the Forward Collision Warning (FCW) feature of the Electronic Vehicle Information Center (EVIC).

One fixed ball stud (4) and two adjustable ball studs (3) secure the sensor housing through a snap fit into three molded plastic ball socket clips installed in the mounting bracket. The sensor pivots on the fixed ball stud while the two adjustable ball studs allow the sensor to be vertically aligned after installation using an ACC vertical alignment special tool and a 3.5 millimeter hex nut driver special tool. Horizontal alignment is performed electronically using a diagnostic scan tool during a ten minute drive at a steady, predetermined speed following completion of the vertical alignment.

The ACC sensor electronic circuitry is sealed and protected within a die cast aluminum housing. A molded plastic cover and a lens or radar dome (5) faces forward through an opening in the center of the front fascia lower airflow grille texture that is trimmed with a bezel snapped into the texture opening. A molded plastic sensor bezel or mirror cover with a center clearance hole for the sensor lens snaps over the sensor and conceals a small square mirror in one corner of the sensor cover that is used for calibration purposes during the sensor manufacturing process.

The ACC sensor includes an applied connector receptacle (2) that is sealed and secured to the sensor housing with screws and faces downward when installed on the mounting bracket. The ACC sensor is connected to the vehicle electrical system through a single dedicated takeout and connector of the FEM wire harness.

The adjustable ball studs and the ACC sensor cannot be repaired. If ineffective or damaged the entire sensor unit must be replaced. The three plastic ball socket clips in the sensor mounting bracket must also be replaced each time the ACC sensor is removed from and reinstalled onto the mounting bracket.