Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 324

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Warning Indicator Announcement - The EMIC transducer will generate one short chime each time the check
gauges indicator is illuminated by the instrument cluster circuitry. The check gauges indicator may be illumi-
nated when any critical engine or transmission systems are operating outside of their normal parameters. The
instrument cluster monitors electronic messages received over the CAN data bus to determine when to illumi-
nate the check gauges indicator.

The EMIC provides chime service for all available features in the chime warning system. The EMIC relies upon its
internal programming, numerous hard wired inputs, and electronic message inputs received from other modules
over the CAN data bus network to provide the chime warning system features. The internal programming of the
EMIC determines the priority of each chime request input that is received, as well as the rate and duration of each
chime that is to be generated.

The hard wired chime warning system inputs to the EMIC may be diagnosed and tested using conventional diag-
nostic tools and procedures. However, conventional diagnostic methods may not prove conclusive in the diagnosis
of the EMIC, the CAN data bus, or the electronic messages received by the EMIC from other modules. The most
reliable, efficient and accurate means to diagnose the EMIC, the CAN data bus, or the electronic message inputs
used for the chime warning system requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic
information.

PARK ASSIST SYSTEM

The Park Assist System display activates an audible tone that changes from intermittent to continuous as the final
two Light Emitting Diodes (LED’s) are illuminated on one side or both sides of the display.

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. 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 transmission gear selector is in reverse for vehicle speeds less than 16 Km/h
(10 mph). If the vehicle’s 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 approach 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 diag-
nose the system using a scan tool and the appropriate diagnostic information.

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CHIME/BUZZER - SERVICE INFORMATION

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MODULE-PARK ASSIST DISPLAY-FRONT

DESCRIPTION

The Park Assist Display is a molded plastic unit, hous-
ing Light Emitting Diodes (LED’s) and a chime
module.

The Park Assist Display is located in the rear of vehi-
cle, over the rear window in the headliner. Located in
the rear of the vehicle for easy visual reference when
the driver is backing up.

The display is used to alert the driver of any obstacles
detected in the rear of the vehicle. The chime or audi-
ble signal also comes from the display unit.

OPERATION

When the ignition is put in the RUN position, all the
Light

Emitting

Diodes

(LED’s)

will

illuminate

for

approximately one second. This will be interrupted if
the system senses an obstacle.

The ready status will be sensed by the outermost two
yellow LED’s (1) being illuminated. As the obstacle is
sensed, the yellow LED’s will start illuminating inward
(6) until the object in approximately 40 cm (16 in.)
away and then the inner red LED will light (3).

The display is sensitive to which side of the rear of the
vehicle that the object is detected. If on the left rear, the left segments will light and the same for the right side of
the vehicle.

CORRELATION OF LED SEGMENTS TO DISTANCE

DISPLAY LED

DISTANCE

LED COLOR

AUDIBLE SIGNAL

REAR CORNERS

REAR CENTER

1st LED

150 cm (59 in.)

Yellow

None

2nd LED

120 cm (47 in.)

Yellow

None

3rd LED

100 cm (39 in.)

Yellow

None

4th LED

80 cm (31.5 in.)

80 cm (31.5 in.)

Yellow

None

5th LED

65 cm (25.5 in.)

65 cm (25.5 in.)

Yellow

None

6th LED

50 cm (20 in.)

50 cm (20 in.)

Yellow

None

7th LED

40 cm (16 in.)

40 cm (16 in.)

Red

30 cm (12 in.)
Intermittant

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CHIME/BUZZER - SERVICE INFORMATION

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8th LED

15 cm (6 in.)

30 cm (12 in.)

Red

20 cm (8 in.)
Continuous

There will be an audible tone when the object gets within 40 cm (16 in.) from the rear of the vehicle.

To diagnose and test the Park Assist System, use a scan tool and the appropriate diagnostic information.

REMOVAL

1. Disconnect and isolate the battery negative cable.

2. Lower the headliner (3) in the rear of the vehicle in

the liftgate opening. Follow the headliner removal
procedure for the rear of the headliner (Refer to 23
- BODY/INTERIOR/HEADLINER - REMOVAL).

3. Bend the retaining tabs (2) upwards to allow the

park assist display (1) to drop out of the headliner
(3) opening.

4. Disconnect the display electrical connector (4) and

remove display (1) from vehicle.

INSTALLATION

1. Position the Park Assist Display (1) in headliner (3)

opening and connect the display electrical connec-
tor (4).

2. Bend the retaining tabs (2) down behind the head-

liner (3).

3. Raise the headliner in the rear of the vehicle in the

liftgate opening (Refer to 23 - BODY/INTERIOR/
HEADLINER - INSTALLATION).

4. Connect the battery negative cable.

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CHIME/BUZZER - SERVICE INFORMATION

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PARK ASSIST MODULE

DESCRIPTION

The Park Assist Module has a molded plastic housing
which housing internal circuitry and two electrical con-
nectors. There are four mounting tabs that affix the
module to the right inner quarter trim panel with four
screws.

The Park Assist Module (2) is located on the right side
of the vehicle, in the trunk compartment, behind the
trunk carpet.

The module (2) 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 han-
dling (sensors, display, module).

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Data exchange over the Controller Area Network
(CAN) data bus.

OPERATION

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 approach the object, one red LED is illuminated and the system emits a series of short beeps. The

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CHIME/BUZZER - SERVICE INFORMATION

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