Nissan Sentra Service Manual: Headlamp
Aiming adjustment
Preparation before adjusting
Before performing aiming adjustment, check the following:
- Ensure all tires are inflated to correct pressure.
- Place vehicle and screen on level surface.
- Ensure there is no load in vehicle other than the driver (or equivalent
weight placed in driver's position).
- Coolant and engine oil filled to correct level, and fuel tank full.
- Remove cargo and/or luggage to maintain an unloaded vehicle condition.
- Confirm spare tire, jack and tools are properly stowed.
- Carefully wipe off any dirt from headlamp lens.
Caution:
Do not use organic solvent (thinner, gasoline etc.)
- Place a driver or equivalent weight of 68.5 Kg (150 lb) on the driver
seat.
- By hand, bounce the front and rear of the vehicle to settle the
suspension and eliminate any static load.
- Place the front tires in the straight ahead position.
- Aim each headlamp individually and ensure other headlamp beam pattern is
blocked from screen.
Note:
- For headlamp aiming details, refer to regulations in your area.
- By regulation, no means for horizontal aim adjustment is provided from
the factory; only vertical aim is
adjustable.
- Use adjusting screw to perform aiming adjustment.
- Perform headlamp aiming if:
- The vehicle front body has been repaired.
- The front combination lamp has been removed or replaced.
- Any outfitting has been installed.
- The vehicle’s standard load condition has been substantially increased.
![](images/books/349/69/index434.jpg)
- Front combination lamp
- Suitable tool (for aiming adjustment)
- Adjusting screw
Aiming adjustment procedure
- Position the screen.
Note:
- Stop the vehicle facing the screen
- Place the screen on a plain road vertically.
- Face the screen with the vehicle. Maintain 10 m (33 ft) between the
headlamp bulb center and the screen.
- Start the engine. Turn the headlamp (lo) on.
Caution:
Do not cover the lens surface with tape, etc. The lens is made of
resin.
Note:
- Aim each headlamp individually and ensure other headlamp beam pattern
is blocked from screen.
- For horizontal aiming, adjust headlamp until beam pattern is at
horizontal center point.
![](images/books/349/69/index435.jpg)
- Right
- Left
- Center of headlamp bulb (H-V point)
- Cutoff line
- Screen
- Aim evaluation segment
- Step
- Horizontal center line of head lamp
- 30 mm (1.18 in)
- 4 mm (0.16 in)
- 10 m (33 ft)
- 480 mm (18.90 in)
- 160 mm (6.30 in)
- Vertical center line of headlamp
- Basic illuminating area for adjustment should be within the range shown
on the aiming chart. Adjust
headlamps accordingly.
Aiming adjustment
PREPARATION BEFORE ADJUSTING
The fog lamp is a semi-sealed beam type which uses a replaceable halogen
bulb. Before performing aiming
adjustment procedure, check the following:
...
Other materials:
Ecu diagnosis information
Av control unit
Reference value
TERMINAL LAYOUT
PHYSICAL VALUES
Dtc index
...
Interior room lamp control circuit
Description
Controls each interior room lamp (ground side) by pwm signal.
Note:
Pwm signal control period is approximately 250 hz (in the gradual
brightening/dimming).
Component function check
Caution:
Before performing the diagnosis, check that the following are normal.
Interior room l ...
Thermostat and thermostat housing
Exploded View
Thermostat housing
Gasket
Rubber ring
Thermostat
Water inlet
Clamp
Radiator hose (upper)
To radiator
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns
could occur from high-pressure
engine coolant escaping from the radiator. ...
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