Commander 4WD V8-4.7L VIN N (2006)
Parking Assist Control Module: Description and Operation
MODULE-PARK ASSIST
DESCRIPTION
The Park Assist Module (5) is secured within a cavity on the left side of a molded plastic intermediate step assembly (4) located on the rear floor panel
(3) under the second row seat cushion. The module is concealed beneath a carpeted trim cover secured by hook and loop fasteners over the step cavity.
The inboard side of this cavity also contains the Final Drive Control Module (FDCM) (1) on vehicles that are so equipped. Both modules are connected
to the vehicle electrical system through dedicated take outs and connectors of the underbody wire harness (2).
Concealed within the molded plastic park assist module housing (1) is a microprocessor and the other electronic circuitry of the module. The module
housing is sealed to enclose and protect the internal electronic circuitry. The module software is flash programmable.
There are four mounting tabs (2 & 3) integral to the module housing that secure the module through two slots and two latch features integral to the floor
of the step cavity. Two connector receptacles (4) containing terminal pins that connect the module to the vehicle electrical system are integral to the one
side of the housing. One of the receptacles is utilized in vehicles equipped with only the rear park assist system, while both receptacles are used on
vehicles equipped with both the front and the rear park assist system.
The park assist module cannot be adjusted or repaired and, if damaged or ineffective, it must be replaced.
OPERATION
The microprocessor in the park assist module contains the park assist system logic circuits. The module uses On- Board Diagnostics (OBD) and can
communicate with other electronic modules in the vehicle as well as with the diagnostic scan tool using the Controller Area Network (CAN) data bus.
This method of communication is also used for park assist system diagnosis and testing through the 16-way data link connector located on the driver side
lower edge of the instrument panel.
