2004 NISSAN TERRANO headlamp

Description
IThe vertical direction of the headlamp projection can be adjusted from inside the vehicle to prevent the
headlamp beam axis from facing upward due to a change in the number of occupants and load conditions
in the vehicle.
I A little Electronic Control Unit (ECU) is incorporated in each actuator (one for each headlamp), which
compares a signal voltage (V
signal), coming from the headlamp aiming switch, with battery voltage (12V).
The signal voltage varies with the position of the switch.
Related to the difference in voltage the actuator rod will move more or less and adjust the headlamp beam
angle accordingly.
EEL018
HEADLAMP Ð Headlamp Aiming Control Ð
EL-41
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Replacing Headlamp Aiming Actuator
Headlamp aiming actuator can not be disassembled.
To remove aiming actuator, turn it 90É to the center of the vehicle
(left and right symmetrical) and pull outward.
EEL017
EEL019
HEADLAMP Ð Headlamp Aiming Control Ð
Description (Cont'd)EL-42
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Wiring Diagram Ð H/AIM Ð
YEL068D
HEADLAMP Ð Headlamp Aiming Control Ð
EL-43
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LHD MODELS
YEL069D
HEADLAMP Ð Headlamp Aiming Control Ð
Wiring Diagram Ð H/AIM Ð (Cont'd)EL-44
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RHD MODELS
YEL070D
HEADLAMP Ð Headlamp Aiming Control Ð
Wiring Diagram Ð H/AIM Ð (Cont'd)EL-45
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Trouble Diagnoses
SYMPTOM: Headlamp aiming does not operate.
POWER SUPPLY CIRCUIT CHECK
(For aiming switch)
IDisconnect headlamp aiming switch
connector.
I Turn lighting switch to 1st. position.
Check voltage between headlamp aiming
switch connector terminal q
3and body
ground.
OK
ENG Check the following:
IHarness and connector
between headlamp aim-
ing switch and fuse
I 10A fuse (No. 34) in
fuse block (Refer to
ªPOWER SUPPLY
ROUTINGº, EL-8).
I Condition and operation
of ignition switch.
I Battery charge condition.
If NG, replace 10A fuse,
recharge battery or repair
ignition switch.
AIMING SWITCH CHECK
Check resistance between headlamp aim-
ing switch connector (switch side) termi-
nals q
1/q2and q3at each switch position.
OK
ENG
Replace headlamp aiming
switch
GROUND CIRCUIT CHECK FOR AIMING
MOTOR
IConnect headlamp aiming switch con-
nector.
Check continuity between headlamp aim-
ing motor connector terminal q
1and body
ground. Continuity exists ... OK
OK
ENG Repair harness or connec-
tors between aiming motor
and body ground.
POWER SUPPLY CIRCUIT CHECK
(For aiming motor unit)
ITurn lighting switch to 1st. position
Check if battery voltage exist between
headlamp aiming motor connector termi-
nals q
1andq3.
OK
ENG
Check harness between
headlamp aiming switch
and aiming motor unit.
Replace aiming motor unit.
Voltmeter terminals
Voltage (V)
(+) (þ)
q
3Ground Approx. 12
Switch
position Ohmmeter terminals
q1q3q2
00 W
1 750W
2 536W
3 274W
YEL289D
YEL290D
YEL291D
YEL292D
H
H
H
H
HEADLAMP Ð Headlamp Aiming Control Ð
EL-46
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Bulb Replacement
The headlamp is a semi-sealed beam type which uses a replacable
halogen bulb. The bulb can be replaced from the engine compart-
ment side without removing the headlamp body.
IGrasp only the plastic base when handling the bulb. Never
touch the glass envelope.
1. Disconnect the battery cable.
2. Disconnect the harness connector from the back side of the bulb.
3. Pull off the rubber cap.
4. Press end of the retaining pin together to release bulb.
5. Remove the headlamp bulb. Do not shake or rotate the bulb when removing it.
6. Install the new bulb in reverse order of removal.
CAUTION:
I Do not leave headlamp reflector without bulb for a long
period of time as dust, moisture, smoke, etc. may enter the
headlamp body and affect the performance of the head-
lamp. Thus, the headlamp bulb should not be removed
from the headlamp reflector until just before a replacement
bulb is to be installed.
Aiming Adjustment
When performing headlamp aiming adjustment, use an aiming
machine, aiming wall screen or headlamp tester. For operating
instructions, of any aimer, it should be in good repair, calibrated and
used according to respective operation manuals supplied with the
unit.
For details, refer to the regulations in your own country.
Before performing aiming adjustment, check the following:
a. Keep all tires inflated to correct pressures.
b. Place vehicle and tester on one and same flat surface.
c. See that there is noload in vehicle other than coolant,
engine oil filled up to correct level, full fuel tank and the
driver (or equivalent weight placed in driver's position).
CAUTION:
Be sure aiming switch is set to ª0º when performing aiming
adjustment on vehicles equipped with headlamp aiming con-
trol.
NEL623
SEL984W
HEADLAMP
EL-47
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LOW BEAM
1. Turn headlamp low beam on.
2. Use aiming adjusters to perform aiming adjustment with screwdriver !as shown in figures.
I First tighten the adjusting screws all the way and then
make adjustment by loosening the screws.
I Adjust headlamps so that main axis of light is parallel to
center line of body and is aligned with point P shown in
illustration.
I Figure to the left shows headlamp aiming pattern for driv-
ing on right side of road; for driving on left side of road,
aiming pattern is reversed.
I Dotted lines to point P in illustration show center of head-
lamp.
ªHº: Horizontal center line of headlamps
ªW
Lº: Distance between each headlamp center
ªLº: 5,000 mm (196.85 in)
ªCº: 65 mm (2.56 in)
NEL619
NEL620
NEL621
SEL254I
HEADLAMP
Aiming Adjustment (Cont'd)
EL-48
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