Isuzu N-Series. Manual — part 1124
8-208 CAB AND CHASSIS ELECTRICAL
Circuit Diagram
H-16
ON
ACC
ST
B
J-5
J-4
H-5
X-2
X-2
X-2
X-2
B-67
B-67
H-5
H-16
J-49
J-49
R-1
R-1
J-65
J-65
B-70
R-6
R-6
J-9
H-7
P-1
P-2
P-3
P-4
P-5
1
2
3
22
1
2
5
6
5
6
7
5
6
3
1
1
3
4
5
12
6
5W(24V)
8W(12V)
0.5G
3W/L
3B/Y
0.5G
0.5G/R
0.5B/Y
0.5B/Y
1.25B
1.25B
1.25B
0.5G/W
1.25B
2B
MAIN
STARTER SWITCH
FRAME
RELAY; HORN
HORN (LH)
FRAME-LH (CENTER)
HORN SWITCH
(COMBINATION SWITCH)
F-16 10A
METER
METER B-51 (8)
(EXCEPT DUMP VEHICLE)
(DUMP VEHICLE)
BACKUP LIGHT
SWITCH
FL-1
KEY SW
FL-2
(24V MODEL)
H-6
0.5B/Y
0.5R/L
HORN CONTACT
2
BACKUP LIGHT
(REAR COMBINATION LIGHT-RH)
BACKUP LIGHT
(REAR COMBINATION LIGHT-LH)
BACKUP LIGHT
(REAR COMBINATION LIGHT-LH)
(DUMP VEHICLE)
(EXCEPT DUMP VEHICLE)
HORN (RH)
J-62
J-62
5
6
2B
BACKUP LIGHT
(REAR COMBINATION LIGHT-RH)
0.5R/L
2L
P-3
P-4
4JH1
100A or 120A(24V)
100A(12V)
40A(24V)
50A(12V)
F-19
15A; (24V)
F-20
15A; (12V)
HORN, HAZARD
5W
N8A5218E
CAB AND CHASSIS ELECTRICAL 8-209
Connector List
No.
Connector Face
X-2
B-67
B-67
B-70
B-70
E-10
E-10
J-49
005-006
004-001
1
2
3
4
004-002
2
4
1
3
014-002
1 2 3
7 8 9 10
11
4
12
5
13
6
14
014-003
6 5 4
1413 12 11
3 2 1
9 8 7
10
002-025
1 2
002-026
2 1
002-025
1 2
J-49
H-14
H-14
H-16
H-16
J-4
J-5
J-62
No.
Connector Face
002-026
2 1
016-003
1
2
3
4
5
6
7
8
9
11 12 13 14
15
16
10
016-004
4
3
2
1
9
8
7
6
5
13 12 11 10
16
15
14
008-003
1
2
3
4
5
6
7
8
008-004
4
3
2
1
8
7
6
5
001-008
1
001-008
1
006-010
1
2
3
4
5
6
8-210 CAB AND CHASSIS ELECTRICAL
J-62
J-65
J-65
P-1
(12 V)
P-2
P-1
(24 V)
P-4
P-2
(24 V)
No.
Connector Face
006-015
1
2
3
4
5
6
006-010
1
2
3
4
5
6
006-015
1
2
3
4
5
6
000-003
000-004
000-004
000-004
000-006
P-3
P-5
(12 V)
P-5
(24 V)
R-1
R-1
R-6
R-6
No.
Connector Face
000-006
000-007
000-002
006-004
1
2
3
4
5
6
006-005
3
2
1
6
5
4
006-004
1
2
3
4
5
6
006-005
3
2
1
6
5
4
CAB AND CHASSIS ELECTRICAL 8-211
H-5
H-6, H-7
Diagnosis
Quick Chart for Check Point
1. Horn
Notice:
Figure in parenthesis “( )” indicates the order of inspection.
2. Backup Light
Notice:
Figure in parenthesis “( )” indicates the order of inspection.
1
2
3
7
8
9
13
14 15
19
20 21
25
26 27
31
32 33
34
35
36
37
4
5
6
10
11 12
16
17 18
22
23 24
28
29 30
38
39 40
6
5
4
12
11 10
18
17 16
24
23 22
30
29 28
40
39 38
3
2
1
9
8
7
15
14 13
21
20 19
27
26 25
33
32 31
34
35
36
37
N8A5488E
1
2
1
2
1 2 3 4
5 6 7 8
9 10 11 12 13
14 15 16 17 18
2
1
2
1
4 3 2 1
8 7 6 5
13 12 11 10 9
18 17 16 15 14
H - 6
H - 7
H - 8
N8A5489E
Check point
Fuse
F-19, F-20
(15 A)
Horn
Horn SW
Horn
relay
Horn
contact
Cable
harness
Trouble
mode
1-1. Horn does not sound
❍
(1)
❍
(4)
❍
(6)
❍
(2)
❍
(5)
❍
(3)
1-2. Horn does not shut off
❍
(2)
❍
(1)
❍
(3)
Check point
Fuse
F-16 (10 A)
Backup light
SW
(Inhibitor SW)
Backup
light bulb
Backup
buzzer
Cable
harness
Trouble
mode
2-1. Both backup lights inoperative
❍
(1)
❍
(3)
❍
(2)
2-2. Backup light on the left (or right)
side inoperative
❍
(1)
❍
(2)
2-3. Backup light remains on
❍
(1)
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