ISUZU TROOPER 1998 Service Repair Manual

8DÐ328 WIRING SYSTEM
6 Rear Washer Motor Does Not Operate
·IS FUSE C-6 (10A) NORMAL?
YES
·
·DISCONNECT THE CONNECTOR OF THE REAR WIPER &
WASHER SWITCH
WITH THE SWITCH SET AT “WASH” POSITION, IS THERE
CONTINUITY BETWEEN THE SWITCH CONNECTOR TERMI-
NALS 7 I-16 AND 6 I-16 ?REPLACE THE FUSE
NO
YESNO
·
·TURN THE STARTER SWITCH ON
IS THE BATTERY VOLTAGE APPLIED BETWEEN THE REAR
WIPER & WASHER SWITCH HARNESS SIDE CONNECTOR
7 I-16 AND GROUND?
REPAIR A POOR CONNECTION AT THE CONNECTORS
OR AN OPEN CIRCUIT BETWEEN THE FUSE C-6 (10A)
AND 7 I-16
YESNO
REPAIR OR REPLACE THE SWITCH
·
·
·DISCONNECT THE CONNECTOR OF THE REAR WASHER MOTOR
TURN THE STARTER SWITCH ON
WITH THE REAR WIPER & WASHER SWITCH SET AT “WASH”
POSITION, IS THE BATTERY VOLTAGE APPLIED BETWEEN
THE REAR WASHER MOTOR HARNESS SIDE CONNECTOR
1 G-2 AND GROUND?
REPAIR A POOR CONNECTION AT THE CONNECTORS
OR AN OPEN CIRCUIT BETWEEN 1 G-2 AND 6 I-16
YESNO
YES
·IS R-3 GROUNDED SECURELY?
NO
GROUND IT SECURELY
YES
REPAIR A POOR CONNECTION AT THE CONNECTORS OR AN
OPEN CIRCUIT BETWEEN 2 G-2 AND R-3
·
·CONNECT THE MOTOR SIDE CONNECTOR TERMINAL 1 G-2 TO
THE BATTERY (+) TERMINAL AND 2 G-2 TO THE (–) TERMINAL
DOES THE MOTOR OPERATE?
NO
REPLACE THE REAR WASHER MOTOR

WIRING SYSTEM 8D – 329
Headlight Wiper/Washer
General Description
The circuit consists of the starter switch, headlight
wiper switch, headlight wiper motor and washer
motor. By pushing the headlight wiper/washer switch
with the starter switch on, the wiper will make 5
strokes with washer solution applied between each
of the first 4 strokes, regardless of the length of time
the switch is held down.
The washer nozzle is installed to the wiper blade, and
the tank to which the washer motor is installed shared
between the headlight washer and the windshield
washer.

8D – 330 WIRING SYSTEM
Circuit Diagram (RHD) – 1
%38
MC-236
3425 5 12
C-23
0.5
R/B0.5
R
0.5
R/Y0.5
R/Y
0.5
R 0.5
R0.5
R 0.5
R
0.5
L/W0.5
L/W3.0
B/Y
C-4 10A
ELEC,IGC-7 10A
H/LAMP
WIPER STATER SW
(IG1)STATER SW
(IG2)
0.5
B 0.5
L/R342
0.5
O/W0.5
B2.0
B2.0
B2.0
B 0.85
B 0.5
R/G0.5
R/G0.5
R
0.5
L/W
B-2
BODY
-LHBODY
-RH BODY
-CTR
B-26
B-18
A
C-23H-7B-6
C-23C
C-231B-6
9
B-710B-7
M
M
C-306 15
2
C-30H-7D
C-30
C-3610H-41
E
B
C-30F
15
H-151C-36
ALARM&RELAY
CONTROL UNIT
ALARM&RELAY
CONTROL UNITH/LIGHT
WASHER
MOTOR
HEADLIGHT
WIPER
MOTOR-LHHEADLIGHT
WIPER
MOTOR-RH

WIRING SYSTEM 8D – 331
Circuit Diagram (RHD) – 2
%38
1.25
B 0.5
B0.5
B 0.5
B 0.3
R/G
ILLUMINATION
CONTROLLER
(3)
HEAD LIGHTWIPER SW
TAIL RELAY
(4)0.5
R/B
0.5
R/B
BODY-RH
B-19
FENDER-LH
6
I-4
2
I-420
H-9A
7I-4
0.85
G/R
3
I-4
5
H-26
4
C-16
0.5
L/R
0.5
L/R11H-24B
8I-4
0.5
O/W
1H-9D
5I-4
0.5
L/W
0.5
O/W0.5
L/W6H-9E
0.5
B
C
0.5
B
F
4
I-4

8D – 332 WIRING SYSTEM
Parts Location (RHD)
1
2
3
4
5
6
7
8 9 10
11
12
13
14
15
16
17
%38
Legend
(1) I-4
(2) C-16
(3) H-7, H-9, H-24
(4) B-6, B-7
(5) B-2
(6) C-23
(7) Headlight Wiper Motor-LH
(8) Headlight Wiper Motor-RH(9) C-30
(10) H-41
(11) C-36
(12) Washer Tank
(13) Relay and Fuse Box
(14) B-18, B-19
(15) H-15, H-26
(16) Fuse Box
(17) B-26

WIRING SYSTEM 8D – 333
Circuit Diagram (LHD) – 1
%38
MC-236
3425 10 12
C-23
0.5
R/B0.5
R
0.5
R/Y0.5
R/Y
0.5
R 0.5
R0.5
R 0.5
R
0.5
L/W0.5
L/W3.0
B/Y
C-4 10A
ELEC,IGC-7 10A
H/LAMP
WIPER STATER SW
(IG1)STATER SW
(IG2)
0.5
B 0.5
L/R342
0.5
O/W0.5
B2.0
B2.0
B2.0
B 0.85
B 0.5
R/G0.5
R/G0.5
R(4JG2)
0.5
L/W
B-2
BODY
-RHBODY
-LH BODY
-CTR
B-26
B-18
A
C-23H-7B-6
B
C-23C
C-231B-6
9
B-710B-7
M
M
C-306 11
2
C-30H-8D
C-30
C-3611H-41
E
C-30F
12
H-151C-36
ALARM&RELAY
CONTROL UNIT
ALARM&RELAY
CONTROL UNITH/LIGHT
WASHER
MOTOR
HEADLIGHT
WIPER
MOTOR-LHHEADLIGHT
WIPER
MOTOR-RH
9
H-41

8D – 334 WIRING SYSTEM
Circuit Diagram (LHD)-2
%38
1.25
B 0.5
B0.5
B 0.5
B 0.3
R/G
ILLUMINATION
CONTROLLER
(3)
HEAD LIGHTWIPER SW
TAIL RELAY
(4)0.5
R/B
0.5
R/B
BODY-LH
B-19
FENDER-LH
6
I-4
2
I-410
H-9A
7I-4
0.85
G/R
3
I-4
16
H-25
4
C-16
0.5
L/R
0.5
L/R9H-9B
8I-4
0.5
O/W
6H-9D
5I-4
0.5
L/W
0.5
O/W0.5
L/W5H-9E
0.5
B
C
0.5
B
F
4
I-4

WIRING SYSTEM 8D – 335
Parts Location (LHD)
Legend
(1) B-26
(2) I-4
(3) H-7, H-8, H-9, H-25
(4) B-18, B-19
(5) Fuse Box
(6) C-16
(7) C-23
(8) Headlight Wiper Motor-LH(9) Headlight Wiper Motor-RH
(10) H-41
(11) C-30
(12) C-36
(13) Washer Tank
(14) Relay and Fuse Box
(15) B-6, B-7
(16) B-2
(17) H-15
1
2
3
4
5
6
78
910
11
12
13
14
15
16
17
%38

8D – 336 WIRING SYSTEM
Diagnosis
Quick Chart for Check Points
1. Headlight wipers and washer do not
operate on either side
2. Wiper on the left (or right) side does
not operate
3. Auto-stop function of the wiper on the
left (or right) side does not operate
4. Wiper on the left (or right) side does
not stop
5. Washer motor does not operate
Trouble modeCheck point
C-7 C-4Fuse
Headlight
wiper SWHeadlight
wiper
motorHeadlight
washer
motorCable
harness Alarm &
relay
control unit

WIRING SYSTEM 8D – 337
1. Headlight Wipers And Washer Do Not Operate On Either Side
•IS FUSE C-7 (10A) NORMAL?
YES
REPLACE THE FUSE C-7 (10A)
NO
•TURN THE STARTER SWITCH ON
•IS THE BATTERY VOLTAGE APPLIED BETWEEN
FUSE C-7 AND HEADLIGHT WIPER MOTOR
CONNECTOR TERMINAL 6 AND THE GROUND?
YESNO
•IS B-19 GROUNDED SECURELY?REPAIR A POOR CONNECTION AT THE
CONNECTORS OR AN OPEN CIRCUIT
BETWEEN FUSE C-7 AND HEADLIGHT
WIPER MOTOR
YES
GROUND IT SECURELY
NO
•DISCONNECT THE HEADLIGHT WIPER
SWITCH CONNECTOR
•IS THE CONTINUITY IN THE SWITCH
NORMAL?
YESNO
REPAIR OR REPLACE THE HEADLIGHT
WIPER SW REPAIR A POOR CONNECTION AT THE CONNECTORS
OR AN OPEN CIRCUIT BETWEEN 6 I-4 AND B-19