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92-0
REAR WIPER/WASHER
ORN
1
FUSE
BLOCK-
REAR
Connector
RR WIPER
Circuit
Breaker 9
15A
HOT AT ALL TIMES
C2
C5
WINDOW
WIPER
MOTOR-
REAR
Connector
C
A
BLK
1
BLK
2
G401
M
ORN
1
B
C900
Connector
E
DK GRN
0.8
FUSE
BLOCK-
UNDERHOOD
Connector
C4
B5
C2
C3
HOT AT ALL TIMES
WASH
Fuse 7
20A
G103
BLK
1
M
WINDOW
WASHER
FLUID
PUMP-
REAR
Connector
B
A
REAR
WASH
RELAY
38
BLK
0.8
LT GRN
0.35
Rear
window
washer
relay
control
C1
B3
BODY
CONTROL
MODULE
(BCM)
Connector
LT GRN
0.35
B1
C1
Class 2
Data
Lines
Rear
window
motor
speed
signal
C2
3
LIFTGATE
MODULE
(LGM)
Connector
LT BLU
0.35
2
C2
Class 2
Data
Lines
DK GRN
0.35
Rear
window
motor
speed
signal
Battery
positive
voltage
BLK
1
See Ground
Distribution,
page 14.
BLK
2
See Ground
Distribution,
page 14-8.
D
C900
Connector
Logic
Circuit Schematic
92-1
REAR WIPER/WASHER
BRN/WHT
0.35
WHT
0.35
5 volt
reference
C1
B6
BODY
CONTROL
MODULE
(BCM)
Connector
SP201
C
See Ground
Distribution,
page 14-5.
BLK
0.5
BLK
0.35
C
REAR
WINDOW
WIPER/
WASHER
SWITCH
Connector
B
294
348
475
715
Off
Delay 1
Delay 2
Cont
Wash
1270
Illumination
E
A
Dash
Lights
B9
Rear
window
wiper
switch
signal
GRY
0.35
WHT
0.35
Air Conditioning, Automatic
Sound System
(Steering Wheel Controls)
W/O Steering
Wheel Controls
W/ Steering
Wheel Controls
WHT
0.35
WHT
0.35
B3
C201
Connector
WHT
0.35
WHT
0.35
G201
0
1
2
3
Circuit Schematic
92-2
120Ć3
Rear Wiper/Washer System Components
The rear wiper/washer system consists of the following
components:
S
Rear wiper motor
S
Rear washer pump
S
Rear wash relay
S
Rear wiper/washer switch
S
LGM 30A fuse
S
WASH 20A fuse
Rear Wiper/Washer System Controls
S
Body control module
S
Liftgate control module
S
Rear wiper/washer switch
Rear Wiper/Washer System Operation
The rear window wiper/washer switch is an input to the
body control module. The requested rear wiper mode is
sent to the liftgate control module by the body control
module as a message on the serial data circuit, and the
rear window wiper motor is controlled by the liftgate
control module. The switch power circuit to the rear
wiper/washer switch is a 12-volt reference supplied by
the body control module. The rear wiper/washer switch
is a series of resistors and the switch position is
determined by the voltage of the rear wiper/washer
switch signal circuit to the body control module. The
rear wiper/washer switch has continuity at all times and
the body control module expects a rear wiper/washer
switch signal voltage in all switch positions including
OFF. The rear wiper motor is supplied battery positive
voltage and ground. The liftgate control module
controls rear wiper motor operation through the rear
wiper motor control circuit. The rear wiper motor control
circuit is supplied a battery positive reference voltage
by the rear wiper motor module and is pulse width
modulated to ground by the liftgate control module. The
duty cycle of the pulse width modulation determines the
rear wiper motor operating mode. The lift glass and lift
gate ajar switches are inputs to the liftgate control
module and rear wiper motor operation will be disabled
whenever an ajar condition exists. The rear window
washer pump is controlled by the body control module
through the rear washer relay. Battery positive voltage
is supplied to the coil and switch sides of the rear
washer relay. When the rear window wash request is
active the body control module energizes the relay by
grounding the relay coil through the rear washer relay
control circuit. When the relay is energized battery
positive voltage to the relay switch is supplied to the
washer pump control circuit.
Circuit Operation
REAR WIPER/WASHER
92-3
REAR WIPER/WASHER
(Refer to Section 201 for photographs.)
Component
Photo No.
Body Control Module
(BCM)
On Rear Fuse Block, under left rear seat
53
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse Block-Rear
Under the left rear seat
52
. . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse Block-Underhood
Left side of engine compartment
3
. . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Liftgate Module (LGM)
Inside the liftgate
113
. . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Window Wiper/Washer
Switch
In lower center of I/P
73
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SP201
Near right front of lower console
80
. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Window Washer Fluid Pump-
Rear
Attached to the fluid reservoir in the underhood compartment
12
. . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
Window Wiper Motor-Rear
Inside the liftgate
113
. . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connector
C201 (17-BLK), (18-BLK),
and (13-GRY)
At base of steering column
120
. . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C900 (6-BLK)
Top of the liftgate
107
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ground
G103
Right rear of engine compartment
15
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G201
Near right front of lower console
80
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G401
On lower left D-pillar
109
. . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component Location Index
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