Infiniti G37 Coupe. Manual — part 649
EXL-16
< FUNCTION DIAGNOSIS >
[XENON TYPE]
DAYTIME RUNNING LIGHT SYSTEM
Component Parts Location
INFOID:0000000001604591
Component Description
INFOID:0000000001604592
1.
Daytime running light
(Front fog lamp)
2.
Combination switch
3.
BCM
4.
ECM
5.
IPDM E/R
6.
Unified meter and A/C amp.
A.
Dash side lower (Passenger side)
B.
Behind glove box
C.
Engine room dash panel (RH)
D.
Behind cluster lid C
JPLIA0584ZZ
Part
Description
BCM
• Judges each switch condition with the combination switch reading function.
• Judges the headlamp ON/OFF status according to the vehicle condition. Requests
the front fog lamp relay ON to IPDM E/R (with CAN communication).
IPDM E/R
Controls the integrated relay and supplies voltage to the load according to the request
from BCM (with CAN communication).
DAYTIME RUNNING LIGHT SYSTEM
EXL-17
< FUNCTION DIAGNOSIS >
[XENON TYPE]
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
Combination switch
(Lighting & turn signal switch)
Refer to
.
ECM
Transmits the engine condition signal to BCM with CAN communication.
Unified meter and A/C amp.
Transmits the parking brake switch signal to BCM with CAN communication.
Part
Description
EXL-18
< FUNCTION DIAGNOSIS >
[XENON TYPE]
ACTIVE ADAPTIVE FRONT-LIGHTING SYSTEM
ACTIVE ADAPTIVE FRONT-LIGHTING SYSTEM
System Diagram
INFOID:0000000001604593
System Description
INFOID:0000000001604594
OUTLINE
• AFS (ACTIVE ADAPTIVE FRONT-LIGHTING SYSTEM) is controlled by AFS control unit.
• AFS has AFS control (swivel control) and the headlamp auto aiming control.
- AFS control swivels the headlamp to the steering direction.
- Headlamp auto aiming control moves the headlamp light axis up/down according to the vehicle height.
AFS (ADAPTIVE FRONT-LIGHTING SYSTEM)
AFS Control Description
• AFS control controls the headlamp (right) only when the steering wheel is turned rightward, and the head-
lamp (left) only when the steering wheel is turned leftward.
• AFS control unit detects the vehicle condition necessary for AFS control with the following signals.
- AFS switch signal
- Steering angle sensor signal (received from steering angle sensor with CAN communication)
- Engine speed signal (received from ECM with CAN communication)
- Shift position signal (received from TCM with CAN communication)
- Reverse signal (received from back-up lamp switch)
- Low beam status and high beam status (received from IPDM E/R with CAN communication)
- Vehicle speed signal (received from unified meter and A/C amp. with CAN communication)
• When the operation conditions are satisfied, AFS control unit controls the swivel angle depending on the
steering angle and the vehicle speed.
AFS operation condition
- Swivel actuator initialization completed
- AFS OFF switch OFF
- Headlamp ON
- While the engine running
- Selector lever position other than "P" or "R" (A/T models)
- Shift knob position other than reverse (M/T models)
JPLIA0100GB
ACTIVE ADAPTIVE FRONT-LIGHTING SYSTEM
EXL-19
< FUNCTION DIAGNOSIS >
[XENON TYPE]
C
D
E
F
G
H
I
J
K
M
A
B
EXL
N
O
P
- Vehicle speed approximately 25 km/h or more (left swivel only; Right swivel activates regardless of the vehi-
cle speed.)
Swivel Actuator Initialization
• AFS control unit performs the swivel actuator initialization when detecting that the engine starts.
- Swivels the headlamp to the vehicle-center side until it hits the stopper.
- Returns the swivel angle from the stopper. Completes the initialization with regarding the returned position
as the swivel angle 0
°
(straight-forward position).
Swivel Operation
• AFS control unit transmits the drive signal to the swivel actuator when activation conditions are satisfied.
And swivels the headlamp.
- The swivel starts after steering approximately 20
°
or more from straight-forward position.
NOTE:
The steering angle differs between right turn and left turn.
- The swivel angle becomes the maximum angle toward the driving direction if the steering angle is approxi-
mately 90
°
or more depending on the vehicle speed. The swivel angle is maintained by shutting off the drive
signal.
- The swivel starts, and returns to the swivel angle 0
°
(straight-forward position) when the steering is returned
to the straight-forward position.
• AFS control unit returns the swivel angle to the straight-forward position, and stops the swivel regardless of
the steering angle if the operation condition is not satisfied while the swivel angle is 0
°
.
AFS OFF Indicator Lamp
• AFS control unit transmits AFS OFF indicator lamp signal to the combination meter (through unified meter &
A/C amp.) with CAN communication.
• Combination meter turns AFS OFF indicator lamp ON/OFF/blinking according to AFS OFF indicator lamp
signal.
- AFS OFF indicator lamp is turned ON for 1 second for the AFS OFF indicator lamp bulb check when the igni-
tion switch is turned ON. AFS OFF indicator lamp is turned OFF within 1 second when the engine starts.
- AFS OFF indicator lamp is turned OFF when AFS OFF switch is turned ON.
- AFS OFF indicator lamp blinks (1 second each) if AFS control unit detects a specific DTC.
NOTE:
Combination meter blinks AFS OFF indicator lamp (approximately 1 second each) if AFS OFF indicator
lamp signal is not received from AFS control unit.
HEADLAMP AUTO AIMING
Headlamp Auto Aiming Control Description
• Headlamp auto aiming control controls the headlamp light axis height appropriately according to the vehicle
height.
• AFS control unit detects the vehicle condition necessary for headlamp auto aiming control with the following
signals.
- Height sensor signal
- Engine speed signal (received from ECM with CAN communication)
- Low beam status signal and high beam status signal (received from IPDM E/R with CAN communication)
- Vehicle speed signal (received from unified meter and A/C amp. with CAN communication)
• When the operation conditions are satisfied, AFS control unit transmits the aiming motor drive signal for
adjusting the headlamp axis height.
Headlamp auto aiming operation condition
- Headlamp ON
- While the engine running
- Vehicle speed (Control mode is switched according to the driving condition.)
Headlamp Auto Aiming Operation
• AFS control unit calculates the vehicle pitch angle from the height sensor signal. AFS control unit judges the
angle for adjusting the axis gap from the preset position.
CAUTION:
Adjusted axis position may differ from the preset position although the headlamp auto aiming acti-
vates properly if the suspension is replaced or worn.
• AFS control unit controls the headlamp axis by changing the aiming motor drive signal output according to
the vehicle-rearward height when detecting the following vehicle condition. Output is maintained if other con-
dition than following is detected.
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