Isuzu N-Series. Manual — part 992
CAB AND CHASSIS ELECTRICAL 8-73
H-5
H-7, H-8
Starter Switch
Refer to “START AND CHARGING” in this section.
Glow Indicator Light Thermo Switch
Refer to “METER AND WARNING/INDICATOR LIGHT”
in this section.
X-26
P-1
P-4
P-2
P-3
P-5
H-14
(4J
type
ENGIN
E)
(Excep
t 4JH1)
H-14
(4J
type
ENGIN
E)
(Excep
t 4JH1)
No.
Connector Face
005-006
000-004
000-004
000-006
000-006
000-002
016-001
1
2
3
4
5
6
7
8
9
10 11 12
13 14 15 16
016-002
4
3
2
1
8
7
6
5
12 11 10
9
16 15 14 13
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
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
8-74 CAB AND CHASSIS ELECTRICAL
QOSII Control Unit
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.
Terminal No.
Connected to
1
Starter switch (ON)
2
—
3
Thermo switch
4
Starter switch (ST)
5
Glow relay
6
Ground
7
Glow indicator (Meter)
N8A0079E
CAB AND CHASSIS ELECTRICAL 8-75
Parts Location
NHR55, NKR55
F-2, F-16, F-21
X-8 EXHAUST BRAKE RELAY
B-52 EXHAUST BRAKE INDICATOR LIGHT (METER)
X-11
X-25
B-7
EXHAUST BRAKE
MAGNETIC VALVE
(NHR/NKR55 (T OR TC) ONLY)
(NHR/NKR55 (NIA) only)
N8A0084E
8-76 CAB AND CHASSIS ELECTRICAL
NKR66, NPR66, NQR66
N8A0085E
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