Isuzu N-Series. Service manual — part 1105
8-132 CAB AND CHASSIS ELECTRICAL
H-6, H-7, H-8
Engine Stop System
General Description
The circuit consists of starter switch and engine stop
motor.
The engine stop mechanism aims at shut-off of fuel sup-
ply.
Available are motor type and solenoid type depending
on the types of the engine mounted.
Motor type is forcible pull the injection pump control rack
to the direction of fuel supply reduction by means of en-
gine stop motor, thus shutting it off.
Solenoid type is to have the starter switch turn from
“ON” position to “OFF”, so that the solenoid valve fitted
to the injection pump closes to shut off the fuel circuit.
Engine stop system
Engine model
Motor type
4HF1, 4HG1, 4HE1
Solenoid type
4JB1, 4JG2
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
CAB AND CHASSIS ELECTRICAL 8-133
Parts Location
4JB1 / 4JG2 / 4HF1 (N-Spec) Engine
N8A5123E
8-134 CAB AND CHASSIS ELECTRICAL
4HF1 (S-Spec) / 4HG1 / 4HE1 Engine
FUSE BOX ASM
F-9, F-13
N8A5124E
CAB AND CHASSIS ELECTRICAL 8-135
Circuit Diagram
J-34
H-5
H-5
H-5
J-34
H-5
B-68
B-68
J-34
J-34
J-34
H-7
J-9
B-67
B-68
P1
A
ON
ACC
ST
B
P2
P-5
P-1
P-2
P-3
P-4
FL-1 100A or 120A
MAIN
KEY SW
1
B-67
3
2
4
2
1
35
34
33
36
5
4
3
6
1
P2
P1
A
B
E
FRAME-LH (CENTER)
F-13 10A
ENG. STOP
STARTER SW
3W/L
8W/B
0.5L/R
0.5L/R
H-5
12
F-9 10A
FUEL CUT
(4JB1 / 4JG2 /
4HF1 (N- SPEC)
ENGINE)
0.5B/O
3B/Y
3B/Y
0.5B/O
1.25B/O
0.5L/W
0.5L/Y
0.5L
2B
2B
H-6
5W
2
3W/B
FRAME
ENGINE STOP MOTOR
0.5L/W
0.5L/Y
0.5L
FL-2 40A (24V)
50A (12V)
3W/B
(24V MODEL)
E-15
H-14
1
14
FUEL CUT SOLENOID
(4JB1 / 4JG2 / 4HF1 (N-SPEC) ENGINE)
(4HF1 (S-SPEC) / 4HG1 / 4HE1 ONLY)
2L
N8A5125E
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