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Isuzu N-Series. Service manual - part 1116
8-176 CAB AND CHASSIS ELECTRICAL
Installation
To install, follow the removal steps in the reverse order.
Headlight Leveling Actuator
Inspection
This actuator has a mechanism that the angle of head
light leveling varies according to input voltage of SIG-
NAL.
1. Make sure that the voltage specified in table is out-
put to vehicle harness connector which will be con-
nected to actuator.
If the power supply is not 12 V, the SIGNAL output
varies in proportion to its voltage.
2. Connect the connector of actuator and vehicle har-
ness connector.
Make sure that the reflector of headlight moves to
the position indicated by HEAD LAMP LEVELING
SW.
Caution:
1. For vehicles with 12 V and 24 V, this leveling input
voltage is 12 V.
2. Input to SIGNAL must be less than 65% of the in-
put voltage to positive terminal.
N8A5175E
B-152 B-155
Actuator side
3
1
2
N8A0154E
1
2
3
SIGNAL
−
+
Input signal
voltage ratio
for SIGNAL
when the volt-
age difference
between posi-
tive and nega-
tive is
specified as
100%
−
+
HEAD
LAMP
POSITION
Position
0
10.0% (1.2 V)
0 V
12 V
Position
1
23.4% (2.8 V)
0 V
12 V
Position
2
36.7% (4.4 V)
0 V
12 V
Position
3
50.0% (6.0 V)
0 V
12 V
Position
4
63.4% (7.6 V)
0 V
12 V