Isuzu N-Series. Service manual — part 1091
8-76 CAB AND CHASSIS ELECTRICAL
H-5
H-7, H-8
Starter Switch
Refer to “START AND CHARGING” in this section.
Glow Indicator Light
Refer to “METER AND WARNING/INDICATOR LIGHT”
in this section.
QOSIII Control Unit
J-60
J-60
P-1
P-2
P-5
No.
Connector Face
002-007
1
2
002-008
2
1
000-003
000-004
000-007
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
Terminal No.
Connected to
1
Starter switch (ON)
2
—
3
—
4
Thermo sensor (-)
5
Glow 1 relay
6
Charge relay
7
—
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
N8A5082E
CAB AND CHASSIS ELECTRICAL 8-77
Exhaust Brake System
General Description
This circuit consists of starter switch, exhaust brake
switch (combination switch), accelerator switch, clutch
switch, vacuum switching valve, neutral switch and re-
lay.
Exhaust brake is a system to increase exhaust pressure
by means of squeezing exhaust gas from engine and
exert engine brake.
Turn the exhaust brake SW on, and the exhaust brake
valve starts to work by the function of the magnetic valve
to enable the exhaust bake to operate, when the ex-
haust brake indicator light will be on.
When either the accelerator pedal or the clutch pedal is
depressed while driving, the switch of the depressed
pedal will turn off, subsequently the exhaust braking will
stop working.
8
Thermo sensor (+)
9
Meter
10
Ground
11
Starter switch (ST)
12
Glow 2 relay
13
Glow indicator (Meter)
Terminal No.
Connected to
8-78 CAB AND CHASSIS ELECTRICAL
Parts Location
NHR55, NKR55, NHR69
N8A5083E
CAB AND CHASSIS ELECTRICAL 8-79
NKR66, NPR66, NQR66, NPR71
N8A5084E
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