Isuzu Trooper (1996-2001 year) Electrical Manual — part 38
91-1
WINDSHIELD WIPER/WASHER
WHT
BLU
LT GRN/RED
HOT IN ON OR START
C-5
FRT WIPER
& WASHER
15A
SB10
3
B-52
WHT/BLU
DASH
FUSE
BOX
WHT/BLU
BLU
M
OFF
INT
LO
HI
OFF
INT
LO
HI
OFF
WASH
RUN
PARK
3
C-38
BLK
1
B-7
WHT/
BLU
11
12
20
RED/YEL
BLU
19
BLU/YEL
ALARM
and RELAY
CONTROL
UNIT
Solid state:
Do not
check
resistance.
M
C-35
1
C-35
2
WIND-
SHIELD
WASHER
MOTOR
WIND-
SHIELD
WIPER
MOTOR
COMBINATION
SWITCH
5
6
ORN
WHT/BLU
WHT/
BLU
C-38
2
1
C-38
SX9
14
YEL
B-19
SB20
VARIABLE
INTERMIT-
TENT
BLU/ORN
RED/YEL
BLK
BLK
BLU/YEL
BLU/RED
LS and Limited Models
Windshield
Wiper/
Washer
Switch
1
WHT/BLU
BLU/BLK
BLK
C-39
See Ground
Distribution,
page 14-8.
3
6
2
6
5
4
7
8
B-52
WHT/BLK
YEL
14
BLK
BLU/RED
BLU/YEL
BLU/WHT
BLK
See Ground
Distribution,
page 14-1.
BLU/YEL
14
8
H-15
2
H-15
BLU/YEL
BLU/YEL
BLU/YEL
BLU
RED/YEL
BLU
9
B-7
BLK
B-2
See Ground
Distribution,
page 14-3.
BLK
13
6
H-15
BLU/ORN
WHT/
BLU
B-7
B-6
Wind-
shield-
washer
input
Intermittent
input
Variable
intermittent
input
Intermittent
input
Ignition
input
Ground
Run/Park
input
BLK
Circuit Schematic
91-2
WINDSHIELD WIPER/WASHER
(Refer to Section 201 for photographs.)
Component
Photo No.
Alarm and Relay Control
Unit
Behind right kick panel
116
. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dash Fuse Box
Behind left dash side trim panel
55
. . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windshield Washer Motor
Right front corner of engine compartment, in washer fluid reservoir
122
. . . .
. . . . . . . . . .
Windshield Wiper Motor
Right rear corner of engine compartment
45
. . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connector
B-52 (14-BLK)
Below I/P, right of steering column
58
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-38 (6-WHT)
Right rear of engine compartment
45
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H-15 (14-WHT)
Below I/P, above right dash side trim panel, on bracket
115
. . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
Ground
B-2
Above right dash side trim panel
116
. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B-19
Behind top of left dash side trim panel
71
. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-39
Right rear corner of engine compartment, on inner fender panel
45
. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . .
Circuit Operation
With the starter switch in ON or START, battery voltage
is applied to the windshield wiper/washer switch, wind-
shield wiper motor, and alarm and relay control unit
from fuse C-5.
Low Speed
When the windshield wiper switch is moved to LO, bat-
tery voltage is applied to the LO winding of the wind-
shield wiper motor and the windshield wipers run at low
speed.
Park/Run
When the windshield wiper switch is turned to OFF, fuse
C-5 provides battery voltage through the windshield
wiper motor, alarm and relay control unit, and the wind-
shield wiper switch to the LO winding of the windshield
wiper motor. When the switch on the motor reaches the
PARK position, battery voltage from fuse C-5 is re-
moved from the circuit and the windshield wipers stop in
the PARK position.
High Speed
When the windshield wiper switch is in HI, battery volt-
age is applied to the HI winding of the windshield wiper
motor and the windshield wipers run at high speed.
Intermittent
When the windshield wiper switch is moved to INT, the
windshield wiper switch applies battery voltage to the
alarm and relay control unit. The alarm and relay control
unit momentarily energizes every 3 to 4 seconds (S
models) or a variable time of 2 to 20 seconds (LS and
Limited models) (depending on intermittent ring posi-
tion) and applies battery voltage to the LO winding of
the windshield wiper motor to move the windshield wip-
ers from the PARK position to the RUN position, then
the PARK/RUN function takes over to return the wind-
shield wipers to the PARK position. The windshield wip-
ers make a single sweep approximately every 3 to 4 se-
conds (S models) or a variable time of 2 to 20 seconds
(LS and Limited models) (depending on intermittent
ring position).
Washer
When the wiper level is pulled towards you, battery volt-
age is applied to the windshield washer motor and the
alarm and relay control unit. The windshield washer
motor pumps fluid on the windshield and the alarm and
relay control unit energizes and applies battery voltage
to the LO winding of the windshield wiper motor through
the windshield wiper switch. The wipers run at LO
speed until the wiper lever is released.
Component Location Index
REAR WIPER/WASHER
Alarm and Relay Control Unit
Dash Fuse Box
Rear Washer Motor
Rear Wiper Motor
Component Index
92
REAR WIPER/WASHER
BLU/BLK
M
REAR
WASHER
MOTOR
2
BLK
G-2
1
G-2
See Ground
Distribution,
page 14-12.
HOT IN ON OR START
DASH
FUSE
BOX
R-3
SB11
SG2
M
7
21
H-25
BLU/BLK
PARK
RUN
2
7
3
REAR
WIPER
MOTOR
REAR
WIPER/
WASHER
SWITCH
2
I-16
Dash and
Console
Lights
I-16
RED/GRN
GRN/RED
ILLUMINATION
3
OFF
WASH
INT
8
LT BLU
4
18
LT BLU
6
13
8
LT GRN/WHT
4
1
6
1
LT GRN/YEL
BLU/BLK
B-7
2
B-7
H-32
ALARM
and RELAY
CONTROL
UNIT
Solid State:
Do not
check
resistance.
9
2
LT GRN/RED
G-6
LT GRN/RED
9
B-2
7
3
H-38
LT GRN/WHT
LT GRN/WHT
LT GRN/WHT
LT GRN/WHT
SB32
LT GRN/WHT
BLU/WHT
BLU/RED
LT GRN/BLU
BLK
BLK
4
G-6
BLK
H-25
LT GRN/RED
8
BLU/BLK
BLU/BLK
Dash and
Console
Lights
3
5
H-38
BLU/BLK
See Ground
Distribution,
page 14-3.
BLK
BLK
BLK
BLU
BLU/BLK
BLK
C-6
RR WIPER
& WASHER
10A
Ground
Rear wiper
switch input
Rear wiper
motor control
Ignition
input
BLK
LT GRN/BLU
Circuit Schematic
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