Isuzu N-Series. Service manual — part 1094
8-88 CAB AND CHASSIS ELECTRICAL
Exhaust Brake System and Engine Control
Parts Location
For 4HE1-TC Engine
B-52, B-51EXHAUST BRAKE
INDICATOR LIGHT AND
GLOW LIGHT (METER)
B-79 DATA LINK CONNECTOR
B-1
RELAY BOX ASM (No.2)
X-14 TIMING RELAY
B-233, 234 ECU
H-15
H-14
H-13
FUSE BOX ASM
F-2, F-9, F-13, F-16, F-22
X-1 CHARGE RELAY
N8A5599E
CAB AND CHASSIS ELECTRICAL 8-89
For 4JH1 Engine
N8A5103E
8-90 CAB AND CHASSIS ELECTRICAL
For 4HK1-TC Engine
N8A5102E
CAB AND CHASSIS ELECTRICAL 8-91
Circuit Diagram
4HE1-TC Engine for Hong Kong (With ABS) (1)
4
5
2
17
3
X-8
X-8
X-8
X-8
FL-3
60A
GLOW
5W
3W/L
STARTER SW
FL-1
100A
MAIN
FL-2
40A
KEY
H-7
1
2
3
B-67
4
B-67
B-67
F-22
10A
STARTER
F-16
10A
METER
OFF
ACC
ON
ST
B-7
0.5W/R
0.5B/Y
0.5L/R
0.5LG/B
RELAY
EXHAUST BRAKE
0.5LG/B
RELAY:EXHAUST
BRAKE CONTROL
SW:
CLUTCH
0.5LG/R
0.5LG/W
F-2
FUEL HEATER
EXH BRAKE
5
4
2
1
H-6
P-1
P-2
P-3
P-4
P-5
2
0.5B
SW:ACCEL
GLOW INDICATOR LIGHT
0.5B/Y
0.3L/R
0.5L/W
0.5L/W
0.5L/G
0.5L/R
0.5G/O
0.3O/L
3W/B
0.3B/W
0.5B/Y
3B/Y
0.5B/Y
3W/B
5W
2L
0.5B/Y
0.5W/L
RELAY:CHARGE
3B/Y
3B/L
F-9
10A
ENG.
(IG)
F-13
10A
ENG.
STOP
B
ST
GLOW
IGN
ECM
FICD
EXH
BRAKE
0.5B/Y
X-1
3
5
2
4
X-1
X-1
X-1
A
X-25
H-5
38
H-14
10
H-5
22
H-14
5
X-25
X-25
X-25
H-8
3
1
J-23
J-23
J-23
H-5
37
A/C
COMP
B-89
1
2
B-89
B-75
2
1
B-75
H-13
2
2
0.5LG
0.5LG/R
32
H-13
6
VSV:FICD
1
2
12
VSV:INTAKE
THROTTLE
0.5B
0.5LG
1
2
MAGNETIC
VALVE:
EXHAUST
BRAKE
FRAME-LH
(CENTER)
2
1
J-31
J-31
J-9
H-5
H-5
15
ACG(L)
B-51
B-51
8
6
8
B-234
18
B-233
3
B-233
30
B-234
19
B-233
9
3
B-234
B-234
J-41
H-13
0.5B
J-41
J-40
J-40
SW:NEUTRAL
E-11
2
1
E-11
DIODE
X-28
X-28
X-28
X-28
X-28
J-9
H-8
H-8
B-69
B-69
ABS
C/U
J-177
J-177
B-51
B-52
B-1
0.58
0.3W/B
0.3W/B
0.5LG/R
SW:
EXH BRAKE
0.5LG/W
2B
0.5LG/B
0.5LG
0.3W/G
0.5LG/B
RELA
Y
:
EXH BRAKE CUT
0.5B/G
0.5B
0.3B
0.5B
0.5B
1
3
4
0.5B/Y
5
2
10
H-14
14
H-14
13
5
8
7
2
29
6
1
10
J-177
J-177
H-5
24
0.5LG
2B
0.5P
8
H/L BRKT
LH
FRAME LH
(FRONT)
10A
H-15
6
H-15
3
N8A5106E
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