Chrysler RG Voyager. Manual — part 696

OPERATION

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 han-

dling (sensors, display, module).

• Data exchange over the Programmable Commu-

nication 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 detec-
tion height from the ground is 0.2 meters to about
1.5 meters. The radio mutes when the system acti-
vates 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 warn-
ings 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 illu-
minating 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.

• Ensure that the rear bumper is free of dirt and

debris to keep the system operating properly.

• Jackhammers, large trucks, and other vibrations

could affect the performance of the system.

• 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.

To diagnose the Park Assist Module, use a scan

tool and the appropriate body diagnostic information.

REMOVAL

(1) Open hood.
(2) Disconnect and isolate the battery negative

cable.

(3) Remove the left quarter trim panel (Refer to 23

-

BODY/INTERIOR/QUARTER

TRIM

PANEL

-

REMOVAL).

(4) Disconnect the Park Assist Module electrical

connector (Fig. 6).

Fig. 4 PARK ASSIST MODULE

Fig. 5 PARK ASSIST MODULE - LOCATION

1 - RETAINING SCREW J-CLIPS
2 - LEFT QUARTER PANEL/C-PILLAR
3 - MODULE RETAINING SCREWS
4 - PARK ASSIST MODULE

RS

CHIME/BUZZER

8B - 5

PARK ASSIST MODULE (Continued)

(5) Remove the two attaching screws and separate

the module from vehicle (Fig. 7).

INSTALLATION

(1) Position the Park Assist Module and install the

two attaching screws (Fig. 7). Torque screws to 3.5
N·m (30 in. lbs.).

(2) Connect the Park Assist Module electrical con-

nector (Fig. 6).

(3) Install the left quarter trim panel (Refer to 23 -

BODY/INTERIOR/QUARTER

TRIM

PANEL

-

INSTALLATION).

(4) Connect the battery negative cable.

PARK ASSIST SENSOR

DESCRIPTION

The Park Assist Sensors (Fig. 8) are located in the

rear bumper fascia mounted equally apart (Fig. 9).
The sensors generate ultrasonic pulses when trig-
gered by the park assist module when an obstacle is
detected. The sensors then signal the module when
reflected ultrasonic pulses are received.

The sensors detect objects with an ultrasonic pulse

that reflects off the object and then is sent to the
module to determine the distance of the object.

OPERATION

The Park Assist Sensors:
• Generate ultrasonic pulses when triggered by

the Park Assist Module.

• Reception/filtering of ultrasonic energy received.

• Signalling the module of received ultrasonic

pulses that meet threshold criteria.

Fig. 6 PARK ASSIST MODULE ELECTRICAL

CONNECTOR

1 - MODULE ELECTRICAL CONNECTOR
2 - PARK ASSIST MODULE

Fig. 7 PARK ASSIST MODULE - LOCATION

1 - RETAINING SCREW J-CLIPS
2 - LEFT QUARTER PANEL/C-PILLAR
3 - MODULE RETAINING SCREWS
4 - PARK ASSIST MODULE

Fig. 8 PARK ASSIST SENSOR

Fig. 9 PARK ASSIST SENSOR LOCATION

8B - 6

CHIME/BUZZER

RS

PARK ASSIST MODULE (Continued)

The sensors are supplied power by the module. The

sensor supply is enabled when the sensor function is
necessary.

The sensors 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 sensor detec-
tion height from the ground is 0.2 meters to about
1.5 meters.

• Ensure that the rear bumper (sensors) is free of

dirt and debris to keep the system operating prop-
erly.

• Jackhammers, large trucks, and other vibrations

could affect the performance of the system.

• 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.

REMOVAL

(1) Open hood.
(2) Disconnect and isolate the battery negative

cable.

(3) Remove rear fascia (Refer to 13 - FRAME &

BUMPERS/BUMPERS/REAR FASCIA - REMOVAL).

(4) Remove the sensor retaining clip (Fig. 10) from

the back side of the fascia.

(5) Push the Park Assist Sensor out ot the fascia

(Fig. 11).

INSTALLATION

(1) Position the Park Assist Sensor over the retain-

ing housing and firmly snap into housing in rear fas-
cia.

(2) Install the rear fascia (Refer to 13 - FRAME &

BUMPERS/BUMPERS/REAR FASCIA - INSTALLA-
TION).

(3) Connect the battery negative cable.
(4) Close hood.

(5) Verify vehicle and system operation.

Fig. 10 SENSOR RETAINING CLIP

Fig. 11 SENSOR - REMOVE/INSTALL

1 - REAR FASCIA
2 - PARK ASSIST SENSOR

RS

CHIME/BUZZER

8B - 7

PARK ASSIST SENSOR (Continued)