Infiniti Q45 (FY33). Manual — part 272
HID relay is then energized, and power is supplied.
I
from the HID relay terminal
q
5
I
to terminal
q
2
LH headlamp
Power is also supplied
I
from the HID relay terminal
q
7
I
to terminal
q
2
RH headlamp
Ground is supplied at all times.
I
to LH headlamp terminal
q
4
and RH headlamp terminal
q
4
I
through body ground
E22
and
E36
.
With power and ground supplied, the low beam headlamps illuminate.
High beam operation/flash-to-pass operation
When the lighting switch is turned to 2ND and HIGH (“A”) or PASS (“C”) position, ground is supplied
I
to headlamp relay terminal
q
2
I
from the lighting switch terminal
q
12
.
Headlamp relay is then energized, and power is supplied
I
from the headlamp relay terminal
q
6
I
to terminal
q
1
of the LH headlamp, and
I
to combination meter terminal
q
22
for the HIGH BEAM indicator
I
from headlamp relay terminal
q
3
I
to terminal
q
1
of the RH headlamp.
Ground is supplied
I
to terminal
q
3
of the LH headlamp, and
I
to combination meter terminal
q
23
I
from the lighting switch terminal
q
6
I
to terminal
q
3
of the RH headlamp
I
from the lighting switch terminal
q
9
.
With power and ground supplied, the high beam headlamps illuminate.
AUTO LIGHT OPERATION
BCM is connected to the optical sensor. The optical sensor sends a signal to BCM according to outside
brightness.
When the lighting switch is turned to AUTO position, ground is supplied
I
to BCM terminal
q
14
I
from the lighting switch terminal
q
42
.
When ignition switch is set to ON or START and outside is darker than the prescribed level, ground is sup-
plied
I
to HID relay terminal
q
2
and headlamp relay terminal
q
2
I
from the BCM terminal
q
5
.
HID relay and headlamp relay are energized.
Then the low beam headlamps illuminate.
And the high beam headlamps illuminate when the lighting switch is turned to HIGH (“A”) or PASS (“C”) posi-
tions.
Auto light operation allows headlamps to turn off when outside is brighter than the prescribed level.
Or the ignition switch is turned to OFF position.
For parking, license and tail lamp auto operation, refer to “PARKING, LICENSE AND TAIL LAMPS” (EL-111).
SHUT OFF DELAY
For shut off delay, refer to EL-63.
VEHICLE SECURITY SYSTEM
The vehicle security system will flash the high beams if the system is triggered. Refer to “VEHICLE SECU-
RITY (THEFT WARNING) SYSTEM — IVMS” (EL-415).
GI
MA
EM
LC
EC
FE
AT
PD
FA
RA
BR
ST
RS
BT
HA
IDX
HEADLAMP (FOR U.S.A.) — XENON TYPE —
System Description (Cont’d)
EL-79
XENON HEADLAMP
Xenon type headlamp is adopted to the low beam headlamps. Xenon bulbs do not use a filament. Instead,
they produce light when a high voltage current is passed between two tungsten electrodes through a mixture
of xenon (an inert gas) and certain other metal halides. In addition to added lighting power, electronic control
of the power supply gives the headlamps stable quality and tone color.
Following are some of the many advantage of the xenon type headlamp.
I
The light produced by the headlamps is white color approximating sunlight that is easy on the eyes.
I
Light output is nearly double that of halogen headlamps, affording increased area of illumination.
I
The light features a high relative spectral distribution at wavelengths to the human eye is most sensitive,
which means that even in the rain, more light is reflected back from the road surface toward the vehicle,
for added visibility.
I
Power consumption is approximately 25 percent less than halogen headlamps, reducing battery load.
SEL956V
HEADLAMP (FOR U.S.A.) — XENON TYPE —
System Description (Cont’d)
EL-80
Schematic
TEL827B
GI
MA
EM
LC
EC
FE
AT
PD
FA
RA
BR
ST
RS
BT
HA
IDX
HEADLAMP (FOR U.S.A.) — XENON TYPE —
EL-81
Wiring Diagram — H/LAMP —
TEL723B
HEADLAMP (FOR U.S.A.) — XENON TYPE —
EL-82
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