1999 NISSAN PRIMERA low beam

Schematic
XENON TYPE
YEL274C
BATTERY
FUSE
COMBINATION SWITCH
(LIGHTING SWITCH)
HEADLAMP LH COMBINATION
METER
(HI BEAM INDI-
CATOR)LOW
HIGH
LOWHIGH HEADLAMP
RELAY LH
HEADLAMP RHIGNITION SWITCH
ON or STARTIGNITION SWITCH
START
HEADLAMP
RELAY RH
DAYTIME LIGHT CONTROL UNIT
To tail lamp
ALTERNATOROFF1.
a
2.a
HEADLAMP—Daytime Light System With Xenon Type—
EL-82

System Description
The auto level control unit is designed to adjust the beam angle of the headlamp in response to the load-
ing conditions of the vehicle. It is not designed to compensate for the dynamic handling of the vehicle.
The vehicle’s front and rear height is measured by sensors attached to the front stabilizer bar and the rear
suspension lateral link arm. The sensors provide a signal to the auto level control unit, which calculates the
correct headlamp aiming position and sends a signal to the aiming motors.
Initialisation
After the replacement or adjustment of any suspension sensor, the system must be self calibrated. This is
achieved as follows.
The vehicle must be empty, since any load will result in an invalid calibration. From outside of the vehicle
turn ignition on and then within 7 seconds the light switch must be turned from off to side lights on position,
5 times, finishing with the lamps in the on position.
The headlamps will then move to the highest, then the lowest then the normal position to indicate that the
calibration is successful, as can be seen by the moving beam pattern.
After successful calibration the headlamps must then be aimed in the conventional manner. Refer to EL-70.
HEADLAMP—Headlamp Aiming Control (Auto)—
EL-91

Removal and Installation
CAUTION:
lBefore removing the rear suspension assembly, discon-
nect the ABS wheel sensor and headlamp leveling sen-
sor from the assembly. Failure to do so may result in
damage to the sensor wires and the sensor becoming
inoperative.
lRemove suspension assembly.
1. Disconnect parking brake cable from caliper and remove
brake caliper and rotor.
Suspend caliper assembly with wire so as not to stretch
brake hose.
Be careful not to depress brake pedal, or piston will pop out.
Make sure brake hose is not twisted.
2. Using a transmission jack, raise torsion beam a little, and
remove nuts and bolts from the trailing arm, shock absorber
assembly (lower side) and lateral link.
3. Lower transmission jack, and remove suspension.
4. Remove shock absorber assembly.
lInstall suspension assembly.
CAUTION:
Refill with new brake fluid ªDOT 4º.
Never reuse drained brake fluid.
lAfter installation of the suspension assembly the head-
lamp leveling sensor has to be recalibrated. Refer to EL
section (models equipped with xenon headlamps only).
1. Attach torsion beam, at trailing arm and lateral link, to
vehicle. Do not tighten bolts at this time.
2. Using a transmission jack, place lateral link and control rod
horizontally against torsion beam. Tighten lateral link on
vehicle.
3. Attach shock absorber assembly to vehicle. Then tighten the
lower side of shock absorber assembly.
4. Lower torsion beam to fully extended position. Remove
transmission jack and tighten torsion beam, at trailing arm, to
specified torque.Refer to RA-9.
5. Install ABS-wheel sensor.
SRA695A
NRA016
SRA697A
SRA698A
REAR SUSPENSION
RA-10

ASSEMBLY
lLocate upper spring seat as shown.
lWhen installing coil spring, be careful not to reverse top and
bottom direction. (Top end is flat.)
lWhen installing coil spring on shock absorber, it must be
positioned as shown in figure at left.
Torsion Beam, Lateral Link and Control Rod
DISASSEMBLY
lRemove torsion beam assembly. Refer to Removal and
Installation in REAR SUSPENSION (RA-10).
lRemove lateral link and control rod from torsion beam.
INSPECTION
lCheck for cracks, distortion or other damage. Replace if nec-
essary.
Standard length:
A 207 - 208 mm (8.15 - 8.19 in)
B 394 - 395 mm (15.51 - 15.55 in)
C 601 - 603 mm (23.66 - 23.74 in)
D 106 - 108 mm (4.17 - 4.25 in)
lCheck all rubber parts for wear, cracks or deformation.
Replace if necessary.
ASSEMBLY
1. Temporarily assemble lateral link and control rod.
lWhen installing the control rod, connect the bush with the
smaller inner diameter to the lateral link.
NRA010 Shock absorber
lower bushing
centerSpring lower
end position
Spring lower
end positionRH LH12.8É
12.8É Front
SFA436B
SRA703A
SRA700A
REAR SUSPENSION
Coil Spring and Shock Absorber (Cont'd)
RA-12