NISSAN TERRANO 2002 Service Repair Manual

ZD30DDTi ENGINE MODELS
YEL066D
HEADLAMP Ð Daytime Light System Ð
Wiring Diagram Ð DTRL Ð (Cont'd)
EL-35

ZD30DDTi ENGINE MODELS
YEL067D
HEADLAMP Ð Daytime Light System Ð
Wiring Diagram Ð DTRL Ð (Cont'd)
EL-36

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.
IA 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-37

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-38

Wiring Diagram Ð H/AIM Ð
YEL068D
HEADLAMP Ð Headlamp Aiming Control Ð
EL-39

LHD MODELS
YEL069D
HEADLAMP Ð Headlamp Aiming Control Ð
Wiring Diagram Ð H/AIM Ð (Cont'd)
EL-40

RHD MODELS
YEL070D
HEADLAMP Ð Headlamp Aiming Control Ð
Wiring Diagram Ð H/AIM Ð (Cont'd)
EL-41

Trouble Diagnoses
SYMPTOM: Headlamp aiming does not operate.
POWER SUPPLY CIRCUIT CHECK
(For aiming switch)
IDisconnect headlamp aiming switch
connector.
ITurn lighting switch to 1st. position.
Check if voltage between headlamp aim-
ing switch connector terminalq
3and body
ground.
OK
ENG
Check the following:
I10A fuse at fuse block
(Refer to ªPOWER SUP-
PLY ROUTINGº, EL-6).
ICondition and operation
of ignition switch.
IBattery 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-
nalsq
1/q2andq3at 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 terminalq
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 12 volts exist between headlamp
aiming motor connector terminalsq
1and
q3.
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
positionOhmmeter terminals
q1q3q2
0 below 10W
1 743 Ð 757W
2 1,274 Ð 1,298W
3 1,545 Ð 1,575W
YEL289D
YEL290D
YEL291D
YEL292D
H
H
H
H
HEADLAMP Ð Headlamp Aiming Control Ð
EL-42

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:
IDo not leave the bulb out of the headlamp reflector for a
long period of time as dust, moisture, smoke, etc. may
enter the headlamp body and affect the performance of the
headlamp. 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.
If any aimer is not available, aiming adjustment can be done as
follows:
For details, refer to the regulations in your own country.
CAUTION:
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
HEADLAMP
EL-43

LOW BEAM
1. Turn headlamp low beam on.
2. Use aiming adjusters to perform aiming adjustment with screw
driver!as shown in figures.
IFirst tighten the adjusting screws all the way and then
make adjustment by loosening the screws.
NEL619
NEL620
NEL621
HEADLAMP
Aiming Adjustment (Cont'd)
EL-44