1998 ISUZU TROOPER relay

8DÐ234 WIRING SYSTEM
Parts Location (LHD)
Legend
(1) Horn Switch
(2) Fuse Box
(3) B-12
(4) C-28(5) C-27
(6) Horn (High Note)
(7) Horn (Low Note)
(8) Relay and Fuse Box (X-8)
(9) H-12, H-16
1
9
8
7
6
54
32
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WIRING SYSTEM 8DÐ235
1 Horns Do Not Sound
·IS FUSE F-3 (15A) NORMAL?
YES
·IS THE HORN RELAY NORMAL? REPLACE THE FUSE
NO
YES
·IS THE BATTERY VOLTAGE APPLIED BETWEEN
2 X-8 AND THE GROUND?REPLACE THE HORN RELAY
NO
YES
·IS THE HORN SWITCH NORMAL?
NO
YESNO
NOYES
REPAIR A POOR CONNECTION AT THE
CONNECTORS OR AN OPEN CIRCUIT
BETWEEN FUSE F-3 (15A) AND 2 X-8
·
·WITH THE HORN SWITCH DEPRESSED,
IS THERE CONTINUITY BETWEEN 1 X-8 AND
THE GROUND?REPAIR OR REPLACE THE SWITCH
REPAIR A POOR CONNECTION AT THE
CONNECTORS OR AN OPEN CIRCUIT BETWEEN
1 X-8 AND 12 B-12REPAIR A POOR CONNECTION AT THE CONNECTORS OR AN
OPEN CIRCUIT BETWEEN 3 X-8 AND 1 C-27 (1 C-28 )
WARNING:
WHEN SERVICING A VEHICLE EQUIPPED WITH SUPPLEMENTAL RESTRAINT SYSTEM, PAY
CLOSE ATTENTION TO ALL WARNINGS AND CAUTIONS.
FOR DETAILED EXPLANATION ABOUT SRS, REFER TO SECTION 9J ÒSUPPLEMENTAL
RESTRAINT SYSTEM (SRS)Ó AND 3F4 ÒSUPPLEMENTAL RESTRAINT SYSTEM STEERING WHEEL
& COLUMNÓ.

8DÐ236 WIRING SYSTEM
2 Horns Do Not Shut Off
·IS THE HORN RELAY NORMAL?
YES
·
·REMOVE THE HORN SW
IS THE MOVABLE PORTION OF THE HORN SW ALWAYS OUT
OF CONTACT WITH THE GROUND BRACKET?REPLACE THE HORN RELAY
NO
YES
REPAIR A SHORT CIRCUIT BETWEEN HORN RELAY HARNESS
SIDE CONNECTOR 1 X-8 AND 12 B-12REPAIR OR REPLACE THE HORN SW
NO
WARNING:
WHEN SERVICING A VEHICLE EQUIPPED WITH SUPPLEMENTAL RESTRAINT SYSTEM, PAY
CLOSE ATTENTION TO ALL WARNINGS AND CAUTIONS.
FOR DETAILED EXPLANATION ABOUT SRS, REFER TO SECTION 9J ÒSUPPLEMENTAL
RESTRAINT SYSTEM (SRS)Ó AND 3F4 ÒSUPPLEMENTAL RESTRAINT SYSTEM STEERING WHEEL
& COLUMNÓ.

WIRING SYSTEM 8DÐ237
Dome Light, Luggage Room Light,
Courtesy Light and Map Light
General Description
This circuit consists of the starter switch, door
switch, dome light, luggage room light, courtesy
light, map light, and alarm & relay control unit.
The dome light lights up when any one of doors
except the tailgate is opened with the switch set at
the door mode.
The courtesy lights for the front doors are controlled
by front door switchÐLH.
The luggage room light illuminates by opening the
tailgate when the switch is set at the door mode.
The map light illuminates by turning the switch on.
All these lights light up by turning on respective
switches regardless of the position of the starter
switch key.
The buzzer in the alarm & relay control unit sounds
to remind the driver to turn off the lights when the
starter switch is turned off.

8DÐ238 WIRING SYSTEM
Circuit Diagram (RHD)-1
TAIL
RELAY
(4)
MAP
LIGHT
5.0
W
0.5
R/W
0.5
R/W
0.5
R/W
0.5
R/W C-16 10A
CLOCK(B), ROOMBATT. (+)
STARTER SW
(IG1)
3.0
B/Y
C-4 10A
ELEC. IGN
0.5
R/Y
LUGGAGE
ROOM
LIGHT
1
R-82R-6
16H-32
1
L-2
R-63
H-217
A
TAIL
GATE SW
0.5
B
1.25
B
BODY-RRR-3R-6
0.5
R/W
0.5
GR/W0.5
R/W
1D-18
10H-18
14H-46
4
B-62
B-6
ALARM & RELAY CONTROL UNIT
1
B-610
B-64H-15
D-18
2
FRT
COURTESY
LIGHT-LH
0.5
GR/R0.5
GR/W
0.85
G/R 0.5
GR/W
R-21
FRT DOOR
SW-LH
0.5
GR/W0.5
R/W0.5
R/W
0.5
R/W0.5
L/W 1 2
D-7
10H-22D-7
2H-22 2
H-18
FRT
COURTESY
LIGHT-RH
0.5
GR/W
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WIRING SYSTEM 8DÐ239
Circuit Diagram (RHD)-2
0.5
GR/G0.5
GR/G0.5
GR/G0.5
GR/G0.5
R 0.5
R/W
0.5
R/W
DOME
LIGHT
(W/O TIMER)
5
B-65H-21
9
0.85
B
2.0
B0.5
GR/W
FRT
DOOR SW
-RHRR
DOOR SW
-LHRR
DOOR SW
-RH
0.5
GR/R
0.5
GR/B
0.5
GR/B 0.5
GR/B
2.0
B
B-71L-3
DOME
LIGHT
(W/ TIMER)4
H-45
2S-1S-1
1H-455
L-3
2A
A
ON
DOOROFF
B-2
B-18
BODY-LH BODY-RH2.0
B
B-26
BODY-CTR
K-21
3
B-6ALARM & RELAY CONTROL UNIT
ALARM & RELAY CONTROL UNIT
5
H-47
R-11
R-111
6
B-6
11H-32
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8DÐ240 WIRING SYSTEM
Parts Location (RHD)
Legend
(1) S-1, L-3 (W/O Sun Roof)
(2) R-6
(3) R-8
(4) R-1
(5) R-3
(6) R-2
(7) H-32, H-46
(8) Alarm and Relay control Unit
(9) B-6, B-7
(10) B-2
(11) H-18
(12) D-18
(13) H-21(14) H-45
(15) H-47
(16) D-7
(17) B-11
(18) H-22
(19) B-18
(20) Relay and Fuse Box
(21) Fuse Box
(22) H-25, H-26
(23) K-2
(24) R-11
(25) L-2
(26) B-26
2
3
4
5
6
7
8
911
15
1617
18
19
20
21
22
23
24
25
12
1026
1314
1
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WIRING SYSTEM 8DÐ241
Circuit Diagram (LHD)-1
TAIL
RELAY
(4)
MAP
LIGHT
5.0
W
0.5
R/W
0.5
R/W
0.5
R/W
0.5
R/W C-16 10A
CLOCK(B), ROOMBATT. (+)
STARTER SW
(IG1)
3.0
B/Y
C-4 10A
ELEC. IGN
0.5
R/Y
LUGGAGE
ROOM
LIGHT
1
R-82R-6
16H-32
1
L-2
R-63
H-217
A
TAIL
GATE SW
0.5
B
1.25
B
BODY-RRR-3R-6
0.5
R/W
0.5
GR/W0.5
R/W
1D-18
10H-18
5H-47
4
B-62
B-6
ALARM & RELAY CONTROL UNIT
1
B-610
B-64H-15
D-18
2
FRT
COURTESY
LIGHT-LH
0.5
GR/R0.5
GR/W
0.85
G/R 0.5
GR/W
K-21
FRT DOOR
SW-RH
0.5
GR/W0.5
R/W0.5
R/W
0.5
R/W0.5
L/W 1 2
D-7
10H-22D-7
2H-22 2
H-18
FRT
COURTESY
LIGHT-RH
0.5
GR/W
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