Chrysler 1997 Stratus Convertible RHD Service Manual page 608

8W - 53 - 4
DESCRIPTION AND OPERATION
HELPFUL INFORMATION . . . . . . . . . . . . . . . . . . . 5
HI SPEED OPERATION . . . . . . . . . . . . . . . . . . . . 5
INTERMITTENT WIPER OPERATION . . . . . . . . . . 4
LOW SPEED OPERATION . . . . . . . . . . . . . . . . . . 5
DESCRIPTION AND OPERATION
WINDSHIELD WIPERS
The windshield wiper system is powered by a
10-amp fuse located in cavity 15 of the junction
block. This fuse is HOT in the ACCESSORY and
RUN positions only. Power for the fuse is supplied on
the A31 circuit.
The A31 circuit originates at the ignition switch.
Power for the A31 circuit is supplied by circuit A1
from the Power Distribution Center (PDC) and pro-
tected by a 20 amp fuse located in cavity 8.
The F13 circuit supplies the power from the fuse in
the junction block to the wiper switch, coil side if the
intermittent wiper relay, and the coil side of the
HI/LOW Wiper relay. This circuit is spliced and also
supplies power to the Rear Window Defogger relay,
and the Turn Signal Combo Flasher. Both of the
relays used in the wiper system are located in the
PDC.
The Body Control Module (BCM) controls all func-
tions of the wiper system. This is accomplished
through a multi-plexed input from the wiper switch
to the BCM on circuit V52.
INTERMITTENT WIPER OPERATION
When the operator selects intermittent wiper oper-
ation a multi-plexed signal is sent to the Body Con-
trol Module (BCM) on the V52 circuit. The BCM then
grounds circuit V14, which is the coil side of the
intermittent wiper relay. This causes the relay to
switch from its normally grounded position and con-
nect circuit A5 to circuit V5. The A5 circuit is pro-
tected by a 40 amp fuse located in cavity 14 of the
Power Distribution Center (PDC).
The V5 circuit is connected to the HI/LOW Wiper
relay LOW speed side. Voltage is passed through the
relay to circuit V3, then to the LOW speed side of the
wiper motor. Ground for the wiper motor is provided
on circuit Z1.
When the wiper motor completes one cycle, the
BCM turns OFF the motor by deactivating the wiper
relays. The amount of delay between wipes is depen-
8W - 53 WIPERS
8W-53 WIPERS
INDEX
page
MIST FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . 4
WASHER OPERATION . . . . . . . . . . . . . . . . . . . . . 5
WINDSHIELD WIPERS . . . . . . . . . . . . . . . . . . . . . 4
WIPER AFTER WASH . . . . . . . . . . . . . . . . . . . . . 4
dent on the voltage level being sent to the BCM from
the wiper switch.
As the windshield wiper motor turns, the park
switch internal to the motor moves from its grounded
position to the open RUN position. The BCM uses
input from the park switch, on circuit V55, for wiper
position and system operation.
The delay times are also compensated for vehicle
speed. If the vehicle is moving less than 10 mph, the
delay time is doubled. Once the vehicle speed exceeds
10 mph, the normal delay times are used.
WIPER AFTER WASH
When the wash button is pressed momentarily a
signal is sent to the Body Control Module (BCM) on
circuit V10. The BCM then turns the wipers ON low
speed for three consecutive wipes after the button is
released.
The BCM turns the wipers ON by providing a
ground path for circuit V14. This causes the intermit-
tent wipe relay to switch from its normally grounded
position and connect circuit A5 to circuit V5. The A5
circuit is protected by a 40 amp fuse located in cavity
14 of the PDC.
The V5 circuit is connected to the HI/LOW Wiper
relay low speed side. Voltage is passed through the
relay to circuit V3, then to the LOW speed side of the
wiper motor. Ground for the wiper motor is provided
on circuit Z1.
As the windshield wiper motor turns, the park
switch internal to the motor moves from its grounded
position to the open RUN position. The BCM uses
input from the park switch, on circuit V55, for wiper
position and system operation.
MIST FUNCTION
When the MIST switch is activated, and the wiper
switch is in the OFF position, a multi-plexed signal
is sent to the Body Control Module (BCM) on circuit
V52. The BCM then turns the wipers on LOW speed
for as long as the switch is held.
The BCM turns the wipers ON by providing a
ground path for circuit V14. This causes the intermit-
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