1998 ISUZU TROOPER relay

8D – 344 WIRING SYSTEM
Parts Location (RHD)
Legend
(1) I-17 (Rear Defogger Switch)
(2) Starter Switch
(3) H-25, H-26
(4) B-19
(5) Fuse Box (B-38)
(6) B-26
(7) G-7(8) H-37
(9) R-3
(10) Rear Defogger
(11) G-3
(12) H-31
(13) B-2
(14) B-6, B-7 (Alarm and Relay Control Unit)
8 9 10
11
12
131412
3
4
5
6
7
%38

WIRING SYSTEM 8D – 345
Circuit Diagram (LHD)
5.0
W BATT.(+)
C-17 25A
RR DEFOG
3.0
B/Y STARTER SW
(IG1)
C-4 10A
ELEC. IGN.
3.0
L/O
3.0
B/L
3.0
B/L
3.0
B/L
3.0
B
3.0
B2.0
B 0.85
B
2.0
B2.0
B
RR DEFOGGER
RELAY
RR DEFOGGER
SW
RR DEFOGGER
B-38
B-38 0.5
L/W
2
B-38
3
41B-38
0.5
O/L0.5
O/L
0.5
O/L0.5
O/L
0.5
O/G0.5
O/G0.3
R/G 0.85
G/R
0.85
L/W0.5
L/W0.5
L/W
ALARM & RELAY
CONTROL UNIT
(RR DEFOGGER)
B-7
5
B-7
8
9B-6
G-7
1H-37
1G-32
2H-31
4H-37R-3
BODY-RR BODY-RH BODY-LHBODY-CTR
B-2
B-26
B-18
TIMER
I-17
3
I-17
4H-255
I-17
ILLUMINATION
CONTROLLER(3)2
5
I-17
3
H-25
6
I-17 TAIL RELAY(4)
1
H-48
%38

8D – 346 WIRING SYSTEM
Parts Location (RHD)
Legend
(1) H-48
(2) B-2
(3) G-7
(4) Rear Defogger
(5) G-3
(6) H-37
(7) R-3
(8) H-31(9) B-26
(10) Fuse Box
(11) B-38
(12) B-18
(13) H-25
(14) Starter Switch
(15) I-17 (Rear Defogger Switch)
(16) B-6, B-7 (Alarm and Relay Control Unit)
%38
9
8
7
65
4
3
21 161514
13
12
11
10

WIRING SYSTEM 8D – 347
Diagnosis
Quick Chart for Check Points
Check pointFuse
C-4
(10A)C-17
(25A)Rear
defogger
relayAlarm &
relay
control
unitCable
harness
1 Rear defogger does not operateTrouble mode
2 Rear defogger timer does not function
Rear
defogger
SW

8D – 348 WIRING SYSTEM
1 Rear Defogger Does Not Operate
•IS THE REAR DEFOGGER SWITCH NORMAL?
YES
YES
REPLACE THE FUSE
NO
NO
•ARE THE FUSES C-4 (10A) AND C-17
(25A) NORMAL?
•IS THE REAR DEFOGGER RELAY NORMAL?
REPLACE THE RELAY
YESNO
TURN ON THE STARTER SWITCH AND THE REAR DEFOGGER
SWITCH
YESNO
•
GROUND IT SECURELY
YESNO
•IS R-3 GROUNDED SECURELY? REPAIR OR REPLACE THE SWITCH
IS THERE A BATTERY VOLTAGE APPLIED BETWEEN THE REAR
DEFOGGER CONNECTOR 1 G-3 AND THE GROUND? •
YES
REPAIR A POOR CONNECTION AT THE
CONNECTORS OR AN OPEN CIRCUIT IN
EACH OF THE FOLLOWING
CONNECTIONS: FUSE C-17 (25A) AND
2 B-38 , FUSE C-4 (10A) AND 3 B-38 ,
4 B-38 AND 1 G-3 , 4 I-17
AND 8 B-6 , 5 I-17 AND FUSE C-4 (10A)
NO
•IS THERE CONTINUITY BETWEEN 1 G-7
AND THE GROUND?
REPLACE THE ALARM & RELAY CONTROL
UNITREPAIR A POOR CONNECTION AT THE
CONNECTORS
OR AN OPEN CIRCUIT BETWEEN 1 G-7
AND R-3

WIRING SYSTEM 8D – 349
2 Rear Defogger Timer Does Not Function
REPLACE THE ALARM & RELAY CONTROL UNIT

WIRING SYSTEM 8D – 351
Circuit Diagram (RHD)-1
D08RW765
1
R-5 2
11
I-15
3
0.3
R/GI-15
1
0.5
Y
0.5
Y
0.5
Y
RR SPEAKER
-LHFRT SPEAKER
-LHFRT SPEAKER
-RHRR SPEAKER
-RH
TWEETER-LH TWEETER-RHI-15 0.85
G/R
TAIL RELAY
(4)
ILLUMINATION
CONTROLLER(3)4
I-15H-27
0.5
O/G0.5
O/G3.0
L/B
C-11 10A
AUDIO(ACC)
MIRROR
4 STARTER SW
(ACC)
R-520H-328H-278
0.5
L
0.5
L
0.5
L
I-15
19H-327H-27
1
R-10 2
2
0.5
O
0.5
O
0.5
O
I-15R-1018H-3214H-279
0.5
B
0.5
B
0.5
B
I-15
17H-3213H-27
1
D-10 2
6
0.5
W
0.5
W
I-15D-103 12H-2715
0.5
R
0.5
R
I-15
H-18
H-1811 11H-27
2
D-13 1
D-13
1
D-1 2
7
0.5
GR
0.5
GR
I-15D-13 18H-2716
0.5
G
0.5
G
I-15
H-22
H-2211 17H-27
2
D-4 1
+
–+
–D-4
AUDIO
H-1614
14
I-15H-25
1.25
R/W 1.25
R/W5.0
W
C-15 20A
AUDIO(B)
19 BATT.(+)+
–
+
– +
– +
–

WIRING SYSTEM 8D – 353
Circuit Diagram (South Africa)-1
D08RWB90
1
R-5 2
11
I-15
3
0.3
R/GI-15
1
0.5
Y
0.5
Y
0.5
Y
RR SPEAKER
-LHFRT SPEAKER
-LHFRT SPEAKER
-RHRR SPEAKER
-RH
BODY-FRT
TWEETER-LH TWEETER-RH
I-15 0.85
G/R
TAIL RELAY
(4)
ILLUMINATION
CONTROLLER(3)4
I-15H-27
0.5
O/G0.5
O/G3.0
L/B
C-11 10A
AUDIO(ACC)
MIRROR
4 STARTER SW
(ACC)
R-520H-328H-278
0.5
L
0.5
L
0.5
L
I-15
19H-327H-27
1
R-10 2
2
0.5
O
0.5
O
0.5
O
I-15+–R-1018H-3214H-279
0.5
B
0.5
B0.85
B/L
0.5
B
I-15
10
I-15
I-39 17
H-3213H-27
1
D-10 2
6
0.5
W
0.5
W
I-15D-103 12H-2715
0.5
R
0.5
R
I-15
H-18
H-1811 11H-27
2
D-13 1
D-13
1
D-1 2
7
0.5
GR
0.5
GR
I-15D-13 18H-2716
0.5
G
0.5
G
I-15
H-22
H-2211 17H-27
2
D-4 1
D-4
AUDIO
H-1614
14
I-15H-25
1.25
R/W 1.25
R/W5.0
W
C-15 20A
AUDIO(B)
19 BATT.(+)
A
+– +–
+– +– +–