1998 NISSAN PICK-UP headlamp

HEL329A
HEADLAMP Ð Dim-dip Lamp System Ð
Wiring Diagram Ð DIMDIP Ð (Cont'd)
EL-61

Trouble Diagnoses
DIM-DIP LAMP CONTROL UNIT INSPECTION TABLE
Terminal No. ConnectionsINPUT (I)/
OUTPUT (O)Operated conditionVoltage (V)
(Approximate
values)
1Lighting switch
(Low beam)I Lighting switchLow beam ON 12
Other 0
2Lighting switch
(High beam)I Lighting switchHigh beam ON 12
Other 0
3 Power source Ð Ð 12
4 Lighting switch I1STz2ND position 12
OFF 0
5 Ignition on signal I Ignition switchON or START 12
ACC or OFF 0
6Power source for head-
lamp LHÐÐ12
7 Headlamp LH O Lighting switchLow beam ON 12
OtherDim-dip lamp
operating12
Dim-dip lamp
off0
8 LH headlamp ground ÐON (dim-dip lamp operating*) 6
OFF 0
9 Headlamp RH O Lighting switchHigh beam ON 12
OtherDim-dip lamp
operating6
Dim-dip lamp
off0
10 Ground Ð Ð Ð
*: Dim-dip lamp operating: Lighting switch in ``1st.'' position with ignition switch ON.
Bulb Replacement
Refer to ``HEADLAMP'' (EL-49).
Aiming Adjustment
Refer to ``HEADLAMP'' (EL-49).
HEADLAMP Ð Dim-dip Lamp System Ð
EL-62

System Description
CIRCUIT OPERATION
[Example]
Aiming switch ``0''
lWhen the aiming switch is set to ``0'', the motor will not start.
This is because the power terminals are positioned at the
nonconductive section of the sensor's rotary unit.
Aiming switch ``0''®``1''
lWhen the aiming switch is moved from ``0'' to ``1'', the sen-
sor's conductive section activates the relay. Power is sup-
plied through the relay to the motor. The headlamps will then
move in the ``DOWN'' direction.
lThe motor continues to rotate while the rotary unit of the
sensor moves from point A to point B.
lThe power terminals will then be positioned at the noncon-
ductive section, disconnecting the power to the motor. The
motor will then stop.
Aiming switch ``1''®``0''
lWhen the aiming switch is moved from ``1'' to ``0'', the sen-
sor's conductive section activates the relay. Power is sup-
plied through the relay to the motor. The motor will rotate to
move the headlamps in the ``UP'' direction.
lWhen the rotary unit of the sensor moves from point B to
point A, the motor will stop.
SEL465M
SEL364P
SEL365P
HEADLAMP Ð Headlamp Aiming Control Ð
EL-63

Wiring Diagram Ð H/AIM Ð
HEL330A
HEADLAMP Ð Headlamp Aiming Control Ð
EL-64

HEL331A
HEADLAMP Ð Headlamp Aiming Control Ð
Wiring Diagram Ð H/AIM Ð (Cont'd)
EL-65

Wiring Diagram Ð HLC Ð
HEL373A
HEADLAMP WASHER
EL-130

Trouble Diagnoses
HEADLAMP WASHER AMPLIFIER INSPECTION
TABLE
Voltage should be measured between each terminal of head-
lamp washer amplifier harness connector terminal and ground.
Ter-
minal
No.Connections Operated conditionVoltage (V)
(Approximate value)
2Headlamp washer
switchHeadlamp washer
switchON 0V
OFF 12V
3Power source for
amplifierIgnition switch ACC or ON 12V
4Headlamp washer
motorHeadlamp washer
switchON0V
NOTE: Approx.
0.5 sec.
OFF 12V
5 Ground Ð Ð
Washer Tube Layout
Check Valve
GEL231
GEL175
HEADLAMP WASHER
EL-131

Headlamp
Wattage (W)
High/low (Semi-sealed beam) 60/55 (H4)
Exterior Lamp
Wattage (W)
Front combination lampFront turn signal 21
Parking 5
Side turn signal lamp 5
Rear combination lampTurn signal 21
Stop/Tail 21/5
Back-up 21
Fog (Except A-chassis) 21
Rear fog lamp (A-chassis) 21
License plate lampStandard bumper 5
Step bumper 21
Interior Lamp
Wattage (W)
Interior room lamp 10
Spot lamp 8
BULB SPECIFICATIONS
EL-252