1999 NISSAN PRIMERA Control

Trouble Diagnoses
DAYTIME LIGHT CONTROL UNIT INSPECTION TABLE
Terminal No. ConnectionsINPUT (I)/
OUTPUT (O)Operated conditionVoltage (V)
(Approximate
values)
1Power source for illumination & tail
lamp——12
2 Alternator“L”terminal I EngineRunning 12
Stopped 0
3 Lighting switch I1ST⋅2ND position 12
OFF 0
5 Power source for headlamp RH——12
6 Illumination & tail lamp OON (daytime light operating*) 12
OFF 0
7 Power source for headlamp LH——12
8 Start signal I Ignition switchSTART 12
ON, ACC or
OFF0
9Headlamp LH (conventional type),
Headlamp relay LH (xenon type)OON (daytime light operating*) 12
OFF 0
10 Ground———
11Headlamp RH (conventional type),
Headlamp relay RH (xenon type)OON (daytime light operating*) 12
OFF 0
12 Power source—Ignition switchON or START 12
ACC or OFF 0
*: Daytime light operating: Lighting switch in“OFF”position with engine running.
Bulb Replacement/Conventional Type
For bulb replacement refer to EL-70.
Bulb specifications/Conventional Type
For bulb specifications, refer to EL-137.
Aiming Adjustment/Conventional Type
For aiming adjustment, refer to EL-70.
Bulb replacement/Xenon Type
For bulb replacement, refer to EL-76.
Aiming Adjustment/Xenon Type
For aiming adjustment, refer to EL-91.
HEADLAMP—Daytime Light System—
EL-86

Wiring Diagram—H/AIM—
MODELS BEFORE VIN - P11U0548750
YEL141C
BATTERY
Refer to EL-POWER.: With daytime light system
: Without daytime light system
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COMBINATION SWITCH
(LIGHTING SWITCH)FUSE BLOCK
(J/B)
DAYTIME LIGHT CON-
TROL UNIT
REFER TO THE FOLLOWING
FUSE BLOCK - Junction Box (J/B)
FUSE BLOCK - Junction Box (J/B) OFF
1ST2ND
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HEADLAMP—Headlamp Aiming Control (Manual)—
EL-87

YEL142C
Preceding
page
HEADLAMP AIM-
ING SWITCH
Preceding
page
HEADLAMP
AIMING
MOTOR LHHEADLAMP
AIMING
MOTOR RH
HEADLAMP—Headlamp Aiming Control (Manual)—
Wiring Diagram—H/AIM—(Cont’d)
EL-88

MODELS AFTER VIN - P11U0548750
YEL834C
HEADLAMP—Headlamp Aiming Control (Manual)—
Wiring Diagram—H/AIM—(Cont’d)
EL-89

YEL835C
HEADLAMP—Headlamp Aiming Control (Manual)—
Wiring Diagram—H/AIM—(Cont’d)
EL-90

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

Component Parts and Harness
Connector Location
NEL528
Auto level control unit
Rear sensor
Headlamp aiming motor RH
Front sensor
Headlamp aiming motor LH
Rear sensor
Auto level control unit Front sensor Headlamp
aiming motor
HEADLAMP—Headlamp Aiming Control (Auto)—
EL-92

Wiring Diagram—H/AIM—
AUTO
YEL836C
HEADLAMP—Headlamp Aiming Control (Auto)—
EL-93