Isuzu N-Series. Manual — part 1114
8-168 CAB AND CHASSIS ELECTRICAL
Installation
To install, follow the removal steps in the reverse order,
noting the following point.
1. Tighten the steering shaft nut to the specified
torque.
Tighten:
Shaft nut to 49 N
⋅m (5 kg⋅m / 36 lb⋅ft)
Headlight Leveling
General Description
The circuit consists of starter SW, headlight leveling SW
and headlight leveling actuator.
When the headlight leveling SW is operated with the
starter SW at ON position, the actuator is operated to
change the angle of the optical axis of the headlight.
Operation of The Circuit
Notice:
Arrow marks indicate the direction of current.
1. When headlight leveling SW is turned to “1” posi-
tion
2. When headlight leveling SW is turned to “0” posi-
tion
N8A5163E
0
1
2
3
HEADLIGHT LEVELING
ACTUATOR - LH
HEADLIGHT LEVELING
ACTUATOR - RH
STARTER SW "ON"
HEADLIGHT
LEVELING SW
N8A0145E
0
1
2
3
HEADLIGHT LEVELING
ACTUATOR - LH
HEADLIGHT LEVELING
ACTUATOR - RH
STARTER SW "ON"
HEADLIGHT
LEVELING SW
N8A0146E
CAB AND CHASSIS ELECTRICAL 8-169
Parts Location
N8A5165E
8-170 CAB AND CHASSIS ELECTRICAL
Circuit Diagram
For 12 Volt
B
ST
ACC
ON
P-1
P-2
P-5
FRAME
FL-1
MAIN
FL-2
KEY SW
STARTER SWITCH
1
30B
8B
ACG B
H-7
3W/B
2
B-67
X-1
X-1
3
B-67
X-1
X-1
P-3
P-4
OFF
2L
100A
50A
4JH1
2L
FUSE BLOCK
RELAY KEY ON
F-12
10A
H/LAMP
LEVEL
3L
0.5B
3B/Y
3B/Y
3W/L
2
B-421
3
B-421
4
B-421
5
B-421
6
2
3
4
5
6
0.5O/G
0.5O/B
0.5O/W
0.5O/L
0.5O
B-421
1
B-421
14
B-421
4
B-156
10
B-156
6
B-156
7
3
2
4
0
1
B-156
8
B-156
9
B-156
R5
R6
RESISTOR;
H/L LEVELING
R4
R3
R2
R1
0.5R/W
0.5R/W
0.5R/W
0.5B
2
B-155
3
B-155
1
0.5B
0.5B
B-155
ACTUATOR; HLL (LH)
(DR SIDE HEAD LAMP)
2
B-152
3
B-152
1
B-152
ACTUATOR; HLL (RH)
(AS SIDE HEAD LAMP)
0.5R/W
0.5R/Y
0.5R/Y
SW; H/L LEVELING
1
3
2
5
1
N8A5166E
CAB AND CHASSIS ELECTRICAL 8-171
For 24 Volt
X-11
X-11
X-11
X-11
B
ST
ACC
ON
P-1
P-2
P-5
FRAME
FL-1
MAIN
FL-2
KEY SW
STARTER SWITCH
1
30B
8B
ACG B
H-7
3W/B
5W/B
3W/B
2
B-67
3
B-67
P-3
P-4
OFF
2L
100A
or
120A
40A
2L
FUSE BLOCK
RELAY KEY ON
F-12
10A
H/LAMP
LEVEL
3L
0.5B
3B/Y
3B/Y
3W/L
2
B-421
3
B-421
4
B-421
5
B-421
6
0.5O/G
0.5O/B
0.5O/W
0.5O/L
0.5O
B-421
1
B-421
14
B-421
1
B-420
6
B-420
3
B-420
2
B-420
4
B-156
10
B-156
6
B-156
7
3
2
4
0
1
B-156
8
B-156
9
B-156
R5
R6
RESISTOR;
H/L LEVELING
R4
R3
R2
R1
0.5R/W
0.5B/W
2
B-155
3
B-155
1
B-155
ACTUATOR; HLL (LH)
(DR SIDE HEAD LAMP)
2
B-152
3
B-152
1
B-152
ACTUATOR; HLL (RH)
(AS SIDE HEAD LAMP)
0.5R/W
0.5B/W
0.5R/Y
0.5R/Y
SW; H/L LEVELING
CONVERTER;
DC-DC(HLL)
0.5L/O
0.5R/W
0.5B/W
1
3
2
5
2
3
4
5
6
1
N8A5480E
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