This is a very cool and complicated system that I wish they had on the Nissan Titan since trucks tend to change ride height due to loads associated with being a truck.




of the vehicle speed.)

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 approximately
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 the unified
meter and 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 ignition
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 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 activates
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 condition
than following is detected.
- Engine starts.
- Headlamp is turned ON.
- Vehicle posture becomes stable after changing the vehicle posture change is detected with the headlamp ON and the vehicle stopped.

- Vehicle speed is maintained with the headlamp ON and the vehicle driven.

Attached Images

AFS.jpg (65.5 KB, 27 views)

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