Isuzu N-Series. Manual — part 1090
8-72 CAB AND CHASSIS ELECTRICAL
QOS (Quick On Start) III System (4JG2 Engine Model)
General Description
The system consists of starter switch, QOS III control unit, glow relay, charge relay, fuel cut solenoid, dropping resis-
tor, thermo sensor, glow plug, engine speed sensor, accel switch and glow indicator light.
Perceiving the engine coolant temperature when the engine started, the thermo sensor varies the glowing time to al-
ways get the most suitable condition for engine starting.
The indicator timer starts to operate as soon as the starter switch turns to “ON” position, and the indicator light turns
on and keeps lit until the glow plugs have been heated to the level ready for the engine starting, when the indicator
light is off.
For details, refer to “PREHEATING SYSTEM”.
System Circuit
N8A5078E
CAB AND CHASSIS ELECTRICAL 8-73
Parts Location
N8A5079E
8-74 CAB AND CHASSIS ELECTRICAL
Circuit Diagram
NHR69
B-10
B-10
B
ST
ACC
ON
B-67
B-67
B-67
H-7
B-10
B-10
B-51
B-51
B-10
B-10
B-10
X-19
X-19
X-19
X-19
H-8
H-8
B-10
X-11
B-10
X-20
X-20
X-20
X-20
E-3
E-16
H-5
H-14
E-16
H-14
H-5
H-5
X-11
B-7
B-10
J-60
J-60
P-1
P-2
P-5
2
1
3
4
22
2
3
4
5
2
1
2
5
3
4
18
3
5
12
1
5
2
3
1
4
61
3
8
6
11
10
4
1
40
15
1
2
8
37
5
9
FRAME
FL-1 100A
MAIN
FL-2 50A
KEY SW
FL-3 60A
GLOW
5B/L
3W/B
STARTER SWITCH
3B/Y
3B/W
F-22 10A
STARTER
F-16 10A
METER
0.5B/W
0.5B/Y
0.5B/W
0.3O/L
0.5B/Y
RELAY; STARTER (4)
GLOW INDICATOR LIGHT (METER)
METER B-52 (3)
0.5W/L
0.5W/L
0.85W/L
GENERATOR (L)
E-18
(1)
0.85W
F-18 15A
GENERATOR
3B/Y
RELAY; CHARGE
METER
B-52
0.5GR
0.5GR/B
THERMO SENSOR (GLOW)
0.3B/L
0.3B/R
1.25B
HEADLIGHT BRACKET (LH)
GLOW PLUG
RELAY; GLOW 1
RELAY; GLOW 2
5B/R
5B/Y
5B/L
0.5B/Y
5B/L
0.5B/Y
5B/Y
QOS III CONTROL UNIT
0.3W
3B
0.3B
0.3B
DROPPING RESISTOR
X-11
X-11
X-11
0.5GR
0.5GR/B
0.5B/L
2L
FUSE BLOCK
(2)
N8A5080E
CAB AND CHASSIS ELECTRICAL 8-75
Connector List
No.
Connector Face
B-10
B-17
X-11
B-51
B-67
B-67
B-75
E-2
013-001
1
2
3
7
8
9
4
5
6
11
12
13
10
004-004
1
2
3
4
005-001
1
3
2
4
5
014-001
1 2 3 4 5 6 7 8
9 1011121314
004-001
1
2
3
4
004-002
2
4
1
3
005-002
4
3
1
5
2
002-005
1
2
E-2
E-3
E-16
E-16
H-14
H-14
X-19
X-20
No.
Connector Face
002-006
1
2
000-009
002-009
1
2
002-010
1
2
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
005-003
1
2
3
5
4
005-003
1
2
3
5
4
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст