Headlamp Auto Aiming

WARNING: This page is about a different car, the 2019 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.

Headlamp Auto Aiming Control Description

AFS control unit 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 via CAN communication)
- Low beam status signal (received from IPDM E/R via CAN communication)
- Vehicle speed signal (received from combination meter via 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
- While the engine running
- Headlamp ON
- 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.
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

NOTE: Adjusted axis position may differ from the preset position although the headlamp auto aiming activates properly if the suspension is replaced or worn.