1998 ISUZU TROOPER relay

WIRING SYSTEM 8DÐ175
2-1 All Illumination Lights Inoperative
·IS TAIL RELAY NORMAL?
YESNO
REPLACE THE RELAY·IS THE CONTINUITY IN THE LIGHTING SWITCH NORMAL?
YESNO
REPAIR A POOR CONNECTION AT THE CONNECTORS OR AN
OPEN CIRCUIT BETWEEN 7 B-12 AND B-19REPAIR A POOR CONNECTION AT THE
CONNECTORS OR AN OPEN CIRCUIT IN THE
CIRCUIT BETWEEN FUSE F-12 AND 8 B-12
YESNO
REPAIR OR REPLACE THE SWITCH·IS B-19 GROUNDED SECURELY?
YESNO
GROUND IT SECURELY·IS THE BATTERY VOLTAGE APPLIED BETWEEN 8 B-12
AND GROUND WHEN LIGHTING SWITCH IS ON?
2-2 Both Taillights Inoperative
·DOES THE LICENCE PLATE LIGHT LIGHT UP WHEN THE
LIGHTING SWITCH IS AT THE CLEARANCE LIGHT
POSITION?
YES
REPAIR A POOR CONNECTION AT THE CONNECTORS OR
AN OPEN CIRCUIT BETWEEN 1 R-13 (1 R-12 )
AND R-4 , OR 2 F-7 (2 F-8 ) AND R-4NOGROUND R-4 SECURELY

8DÐ180 WIRING SYSTEM
Interior Illumination Light
General Description
The circuit consists of a lighting switch, tail relay,
illumination controller and illumination lights.
All these lights come on when the lighting switch is
turned on with the switch turned to either parking or
headlight position.
The brightness of illumination lights except the ones
for ashtray, glove box and vanity mirror, can be
adjusted by the illumination controller.

WIRING SYSTEM 8DÐ181
Circuit Diagram (RHD)-1
5.0
W
0.85
R/BF-12 15A
TAIL,ILLUMI.
TAIL RELAY
BATT.(+)
0.3
G
0.3
G3X-9
1
X-9
0.85
G/R
0.85
G/R
0.85
G/R 0.85
R/B
4
X-92X-9
B-12H-15B-12
LIGHTING
SW
(COMBINATION
SW)
SHIFT
LEVER
(A/T)MIRROR
CONTROL
SWMIRROR
FOLD
SWMIRROR
DEFOGGER
SWPOWER/
WINTER
SW
0.5
B
1.25
B8 3
7
B-19
BODY-RH
4
H-15
FRT
COMBINATION
LIGHTTAIL
LIGHT9
H-32 1
H-411
2 0.85
G/R 0.85
G/R 0.85
G/R
B-33
B-33
2
3 0.85
G/R
B-55
B-55
3
2 0.85
G/R
B-56
B-56
6
2 0.85
G/R 0.85
G/R
0.3
R/G0.3
R/G0.3
R/G0.3
R/G0.85
G/R
0.3
R/G
B-57
B-57
5
2
B-30
B-30C
BA
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WIRING SYSTEM 8DÐ185
Parts Location (RHD)
Legend
(1) Front Fog Light Switch (I-5)
(2) Head Light Wiper / Washer Switch (I-4)
(3) Illumination Controller
(4) B-12
(5) I-9
(6) Hazard Switch (I-11)
(7) L-6
(8) I-16
(9) I-17
(10) L-4
(11) I-24
(12) H-21(13) B-2
(14) H-32
(15) I-23
(16) I-20
(17) B-30
(18) B-33
(19) I-19
(20) B-55, B-56, B-57
(21) H-41
(22) I-16
(23) B-19
(24) Relay and Fuse Box (X-9)
(25) H-15, H-16, H-26
1
2
3
4
5678910
11
12
13
14
15
16
17
1819
20
21
22
23
24
25
D08RW651

8DÐ186 WIRING SYSTEM
Circuit Diagram (LHD)-1
8.0
B/R
5.0
W
3.0
WFL-1 80A
MAIN
TAIL RELAY
BATT.(+)
0.3
G
0.3
G3X-9
1
X-9
3.0
W
4
X-92X-9
B-12H-12B-12
LIGHTING
SW
(COMBINATION
SW)
0.5
B
1.25
B8 1
7
B-19
BODY-LH
2
H-15
FRT
COMBINATION
LIGHT-LHTAIL
LIGHT
-LH10
H-32 1
H-410.85
G/O 0.85
G/O 0.85
G/O3.0
G/Y
F-1110A
TAIL-LHF-12 10A
TAIL-RH
0.85
G/O
6
H-13
FRT
COMBINATION
LIGHT-RHTAIL
LIGHT
-RH10
H-32 13
H-420.85
G/R 0.85
G/R
0.85
G/R
0.85
G/R0.85
G/R
0.85
G/R
A
B
1
H-15
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WIRING SYSTEM 8DÐ191
Parts Location (LHD)
Legend
(1) Rear Deffoger Switch
(2) Rear Wiper / Washer Switch
(3) Engin Warming Switch
(4) 4WD Switch
(5) Hazard Switch
(6) Meter
(7) Illumination Contoroller
(8) Head Light Wiper and Washer Switch
(9) Fog Light Switch
(10) I-5
(11) I-4
(12) I-7
(13) Instrument Harness
(14) I-9
(15) I-6
(16) I-11(17) I-12
(18) I-25
(19) I-16
(20) I-17
(21) B-12
(22) H-32
(23) B-19
(24) H-25, H-26
(25) B-33
(26) B-30
(27) H-41, H-42
(28) Relay and Fuse Box (X-9)
(29) H-13, H-15, H-16
(30) I-24
(31) I-28
(32) I-20
2322
27
26
2521 283031
325
6
14
137
12
10 8
9
18
17 20
15 164 3
24
11
29
1912
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8DÐ192 WIRING SYSTEM
Diagnosis
Interior Illumination Lights Inoperative
NOYES
REPAIR A POOR CONNECTION AT THE
CONNECTORS OR AN OPEN CIRCUIT
BETWEEN 2 I-7 AND B-19
NOYES
IS B-19 GROUNDED SECURELY?·
·IS THERE CONTINUITY BETWEEN 3 I-7 AND
THE GROUND?
YES
REPLACE THE ILLUMINATION CONTROLLER
GROUND IT SECURELY
REMOVE THE ILLUMINATION CONTROLLER
IS THERE CONTINUITY BETWEEN 2 I-7 AND
THE GROUND? ·
·
WITH THE LIGHTING SWITCH AT CLEARANCE LIGHT
POSITION, IS THE BATTERY VOLTAGE APPLIED BETWEEN
1 I-7 AND THE GROUND?·
NOYES
REPAIR A POOR CONNECTION AT THE
CONNECTORS OR AN OPEN CIRCUIT
BETWEEN 4 X-9 AND 1 I-7
NO
REPAIR A POOR CONNECTION AT THE
CONNECTORS OR AN OPEN CIRCUIT
BETWEEN TAIL RELAY AND 3 I-7

8DÐ194 WIRING SYSTEM
Circuit Diagram (RHD)-1
I-115
B-53
B1
H-2716
H-257
B-53
2 L
H-25100.85
R/B0.85
G/O
H-1612
HAZARD
WARNING
SW
TURN SIGNAL
LIGHT SWFLASHER
UNIT
0.85
G/B0.85
G/B
0.85
G/B0.85
P/B
0.85
P/B2.0
G/O0.3
R/G 0.85
G/R
ILLUMINATION
CONTROLLER
(3) 0.85
P/B 2.0
LG/B 0.5
B
1.25
B2.0
LG/B
2.0
LG/B
2.0
LG/B2.0
B/R2.0
B/R
0.85
R/B 0.85
R/B2.0
G/O
5.0
W BATT.(+)
F-3 15A
HORN,HAZARD
3.0
B/Y STARTER SW
(IG1)
C-3 10A
TURN
BACK
B-12
B-12
4
B-12
5 3
LR
AI-11
I-11
I-11
I-11
64 2 1
I-117
I-118
I-11 TAIL RELAY
(4) BACK UP
LIGHT
3
B
B-53
3 E
HORN RELAY
(2)
H-276
H-2710
B-19
BODY-RH
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