Pacifica V6-3.8L VIN L (2005)
Parking Assist Control Module: Description and Operation
Park Assist Module
The Park Assist Module is located on the left side of the vehicle, behind the quarter trim panel, just in front of the D-pillar. It is has a molded plastic
housing which housing internal circuitry and one electrical connector. There are two mounting tabs that affix the module to the left inner quarter panel
with two screws.
The module has a number of functions:
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Supply voltage to the sensors and display.
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Disconnection of the display with bus idle and over voltage Vmax.
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Triggering the sensors.
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Analyze echo delay times and calculate obstacle distances.
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Bi-directional data communication to the display for diagnosis.
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System diagnostics - diagnosis and error handling (sensors, display, module).
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Data exchange over the Programmable Communication Interface (PCI) data bus.
The module has a number of functions:
-
Supply voltage to the sensors and display.
-
Disconnection of the display with bus idle and over voltage Vmax.
-
Triggering the sensors.
-
Analyze echo delay times and calculate obstacle distances.
-
Bi-directional data communication to the display for diagnosis.
-
System diagnostics - diagnosis and error handling (sensors, display, module).
-
Data exchange over the Programmable Communication Interface (PCI) data bus.
The system detection length from the rear of the vehicle is 0.3 meters to 1.5 meters. This area extends around the rear side of the vehicle. The system
detection height from the ground is 0.2 meters to about 1.5 meters. The radio mutes when the system activates its audible tone.
When the driver selects Reverse, the system scans for objects behind the vehicle using four sensors located in the rear bumper. Objects can be detected
from up to 1.5 meters. A warning display above the rear window provides both visible and audible warnings indicating the range of the object.
The system is active only when the vehicle is in reverse for vehicle speeds less than 16 Km/h (10 mph). If the vehicles Parking/Emergency Brake is
applied, the system is deactivated.
The display contains two sets of yellow and red Light Emitting Diode's (LED's) that the driver can see as they look over their shoulder while backing up.
Each side of the vehicle has its own warning LED's. The system provides a visual warning by illuminating one or more yellow LED's as the vehicle gets
closer to the object. As the vehicle continues to approaches the object, one red LED is illuminated and the system emits a series of short beeps. The tone
will remain constant and both red LED's are illuminated once the vehicle is within 12 inches (30.5 cm) of the object.
The system can be turned ON or OFF through the Electronic Vehicle Information Center (EVIC) when the vehicle is in PARK. If the park assist system
is turned OFF, a single chime will sound and the EVIC will display the following message "REAR PARK ASSIST OFF", when the vehicle is in reverse.
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Ensure that the rear bumper is free of dirt and debris to keep the system operating properly.
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Jackhammers, large trucks, and other vibrations could affect the performance of the system.
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Ensure that the parking brake is not applied.
If "Service Park Assist System" appears in the EVIC after making sure the rear bumper is clean, proceed to diagnose the system using a scan tool and the
appropriate diagnostic information.