Isuzu N-Series. Service manual — part 1165
8-372 CAB AND CHASSIS ELECTRICAL
Circuit Diagram
For 12 Volt (4JH1 Engine)
ABS
60A
P-5
P-2
BATTERY
P-1
B-1
B-7
0.85B
H-6
2
B-51
7
B-51
8
FL-9
MAIN
100A
FL-1
KEY SW
50A
FL-2
METER
10A
F-16
8B
8W/B
3R
8W/B
3W/B
3W/B
0.5G/Y
0.5G
SW ; STOP LIGHT
B
OFF
ACC
ON
ST
B-67
2
B-67
3
KEY SW
3W/L
0.5B
2B
3B
0.5B/Y
0.5B/Y
0.5B/Y
STOP LIGHT
10A
F-5
B-66
4
B-66
1
0.5B/Y
0.5W
X-5
4
X-5
5
X-5
1
X-5
3
3B/Y
METER
ABS
RELAY ;
ABS IND.
3W/L
H-7
1
3B
3B
2B
0.3W/V
22
H-5
J-9
P-4
P-3
FRAME-LH (CENTER)
FRAME LH (FRONT)
HEADLIGHT BRACKET (LH)
C
D
E
F
A
B
G
H
N8A5590E
CAB AND CHASSIS ELECTRICAL 8-373
J-78
4
J-78
3
0.5R
0.5W
0.3W/G
0.3W/B
0.3W/G
0.3W/B
0.3W/B
0.5B
0.5B
SPEED
SENSOR
(RR,RH)
J-74
1
J-74
2
0.5P
0.5L
SPEED
SENSOR
(FRT,RH)
J-75
1
J-75
2
0.5V
0.5R/B
0.5P
0.5L
0.5V
0.5R/B
SPEED
SENSOR
(FRT,LH)
0.85B
J-177
22
J-177
16
STOP LAMP
EHCU ; ABS
ECM
B-234 (62)
RL 12V
34
J-78
2
J-78
1
24
MOTOR +B
RL SIG
32
2
VALVE +B
FL SIG
33
23
MOTOR GND
FL GRD
10
1
VALVE GND
FR SIG
11
8
EXH.B/CUT
OUT
FR GRD
21
7
EXH.B/CUT
IN
RR 12V
12
6
IND.
RR SIG
29
IG
MODE1
MODE2
MODE3
J1850
4
FRASH
VEHICLE TYPE CONNECTOR
NKR77-3 (FLAT LOW)
EXCEPT NKR77-3
(EXCEPT FLAT LOW)
2B
3R
3R
3B
3B
0.5B/Y
0.3W/V
0.3W/V
0.3W/V
0.5B/Y
0.5B/Y
0.5B/G
0.5B/R
0.5B/W
1.25B
0.5G
0.5G
0.5G
0.5G
0.5G
H-5
11
2
(30)
ECM
H-16
2
STOP
LIGHT
(RH)
STOP
LIGHT
(LH)
0.5G
1.25B
1.25B
0.5L
0.5Y
SPEED
SENSOR
(RR,LH)
16 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
H-5
35
H-5
36
H-5
40
H-14
10
H-14
11
H-14
12
DATA LINK
CONNECTOR
B-79
0.3W/G
H-5
27
H-5
26
3R
0.5G
0.5LG/B
0.5LG/W
0.5LG/B
0.5LG
0.5LG/W
0.5LG/B
3B
3B
ECM
B-234 (32)
B-234
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
H-14
H-14
15
H-14
16
H-15
1
H-15
2
H-15
5
H-15
6
H-15
4
H-15
3
H-15
7
H-15
8
3
J-177
17
J-177
14
J-177
15
J-177
H-14
9
H-17
4
H-17
3
H-17
1
H-17
2
H-17
H-17
H-17
H-17
H-17
H-17
H-17
H-17
R-1
2
6
R-1
7
H-16
7
H-14
R-6
2
6
R-6
C
D
A
B
E
F
G
H
0.5Y
0.5L
ECM
35
45
B-234
B-234
N8A5591E
8-374 CAB AND CHASSIS ELECTRICAL
For 24 Volt - 4HE1 Engine (Single Cab Model)
ABS
40A
P-4
P-5
BATTERY
P-3
P-2
BATTERY
P-1
FRAME-LH (CENTER)
3B
2B
2B
2B
2B
3B
B-7
HEADLIGHT BRACKET (LH)
3B
B-1
FRAME-LH (FRONT)
0.85B
RELAY ;
EXH.BRAKE
X-8
1
X-8
5
X-8
2
H-6
2
X-8
3
B-51
7
B-51
8
FL-9
MAIN
100A
or
120A
FL-1
EXH.BRAKE
10A
F-2
KEY SW
40A
FL-2
METER
10A
F-16
8B
8W/B
3R
5W/B 3W/B
0.5W/R
0.5B
3W/B
0.5G/Y
0.5G
0.5LG
SW ; STOP LIGHT
B
OFF
ACC
ON
ST
B-67
2
B-67
3
KEY SW
3W/L
3W/L
3B/R
0.5LG/W
0.5LG/W
0.5B
0.5B
0.5B
0.5B/Y
0.5LG/B
0.5P
0.5B
0.5B/G
0.5
LG/R
0.5B
0.5B
0.5B
0.5B
2B
0.5LG/B
0.5LG/B
0.5LG/R
0.5B/Y
0.5LG/B
RELAY;
CHARGE
X-28
4
X-28
2
X-28
5
X-28
1
H-8
8
H-7
1
X-28
3
STOP LIGHT
10A
F-5
B-66
2
B-66
1
SW ; NEUTRAL
(Neutral=ON)
RELAY ;
EXH. BRAKE
CONTROL
SW ; EXH.BRAKE
0.5LG/B
0.5B/Y
0.5B/Y
0.5W
X-5
4
X-5
5
X-5
1
X-5
3
E-11
2
H-14
5
E-11
1
X-25
3
X-25
5
H-14
10
H-5
22
3B/Y
METER
ABS
5
H-8
10
B-69
2
X-25
4
X-25
1
H-8
17
SW ; CLUTCH
B-89
2
B-89
1
B-52
10
B-51
1
IND. LAMP ;
EXH. BRAKE
0.5LG/R
0.5LG/R
H-5
38
0.5G/O
RELAY ;
ABS IND.
A/C
COMPRESSOR
0.5B/Y
0.5B/Y
RELAY ;
EXH. B/CUT
(ABS)
0.5B
0.5B
1.25B
0.85B
0.3W/V
0.5LG/R
B-69
J-9
D
E
F
G
H
I
J
A
B
C
K
L
M
N8A5592E
CAB AND CHASSIS ELECTRICAL 8-375
1.25B
1.25B
7
H-16
7
H-14
SPEED
SENSOR
(RR,RH)
SPEED
SENSOR
(FRT,RH)
SPEED
SENSOR
(FRT,LH)
SPEED
SENSOR
(RR,LH)
STOP
LIGHT
(LH)
STOP
LIGHT
(RH)
0.5G
1.25B
R-1
2
6
R-1
R-6
2
6
R-6
2B
J-148
1
J-148
2
0.5R
0.5W
0.3Y
0.3W/G
0.3W/G
0.3W/B
0.3W/G
0.3W/B
0.3W/B
0.3L
0.5B
0.5B
J-74
1
J-74
2
0.5P
0.5L
J-75
1
J-75
2
1
2
0.5V
0.5R/B
0.5V
0.5R/B
3B
0.5B
0.5B
0.5B
1.25B
0.5LG/W
J-177
22
J-177
16
STOP LAMP
EHCU ; ABS
RL 12V
34
J-149
1
J-149
2
24
MOTOR +B
RL SIG
32
2
VALVE +B
FL SIG
33
23
MOTOR GND
FL GRD
10
1
VALVE GND
FR SIG
11
8
EXH.B/CUT
OUT
FR GRD
21
7
EXH.B/CUT
IN
RR 12V
12
6
IND.
RR SIG
29
3
IG
J1850
4
15
MODE1
FRASH
14
MODE2
17
H-5
30
H-5
24
3
4
MODE3
0.5L/G
0.5L/G
0.5LG
0.5B
0.5LG
J-23
2
H-13
2
VEHICLE TYPE CONNECTOR
FOR TURKEY / GCC
(4-WHEEL DRUM BRAKE MODEL)
FOR OTHER COUNTRIES
SW ; ACCEL
B-75
1
B-75
2
B-234
14
B-233
21
QWS
ECM
CHECKER
B-234
29
B-233
14
EXH.BRAKE
DIAG
B-234
15
H-5
37
FICD
0.5B/G(NQR)
3R
3R
0.5B/Y
0.3W/V
0.3W/V
0.5LG
0.5LG/B
0.5B/R(NQR)
0.5B/W(NQR)
NQR
0.5LG
0.5LG
0.5L/W
0.5L/W
0.5G
3B
0.5G
H-5
11
H-16
2
0.5L
0.5Y
16 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
H-13
12
J-41
2
J-41
4
J-23
3
J-23
1
DIODE ; FICD
J-31
2
J-31
1
MAG.VALVE ;
EXH.BRAKE
VSV ;
FICD
J-40
2
J-40
1
VSV ; INT.
THROTTLE
H-13
6
H-5
32
DATA LINK
CONNECTOR
B-79
0.5G
0.5LG
3R
0.5LG/B
1.25B
3B
0.5B
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
J-177
10
H-14
2
H-14
12
H-14
11
H-14
9
H-14
15
H-14
16
H-14
7
H-15
8
H-15
H-5
6
H-17
2
H-17
1
H-17
3
H-17
4
H-17
H-17
H-17
H-17
H-17
H-17
H-17
H-17
H-15
H-15
H-15
H-15
5
6
0.5P
0.5L
H-15
H-15
D
E
F
G
H
I
J
A
B
C
K
L
M
N8A5593E
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