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Hyundai Equus: Repair procedures - Adaptive Front Lighting System - Body Electrical System - Hyundai Equus VI 2009-2024 Service ManualHyundai Equus: Repair procedures

Second generation VI (2009–2024) / Hyundai Equus VI 2009-2024 Service Manual / Body Electrical System / Adaptive Front Lighting System / Repair procedures

Inspection
Initialization and diagnosis sequence by using diagnostic equipment
Below content summarize the procedure for A/S using Diagnostic equipment
Download Parameter
1.
Select "AFLS" menu after selecting a vehicle.

2.
Select "Parameter download" menu for define a characteristc of vehicle.

3.
Select "Non Air suspension" if vehicle has a standard suspension

4.
Select "Air suspension" if vehicle has a Air suspension

5.
When "Parameter download" is done,display belows.

System Calibration
   
This menu is applied only if vehicle has a Steel suspension
1.
Select "AFLS" menu after selecting a vehicle.
2.
Select "Sensor initializing-Non ECS" if vehicle has a Steel suspension

3.
When "System calibration" is done,display belows.

4.
When "System calibration" is not done,display as belows.

Actuator Test
When it replace H/Lamp Unit, it necessarily check up by operating actuator test.
1.
Select "AFLS" menu after selecting a vehicle.
2.
Select "Actuator test"

3.
Select DBL or HLL test by using "Start" button.
4.
In case select BOTH DBL ACTUATOR DRIVE TO MAX POS(swivelling)
In case select "Start" button : drive to max position right direction (15°)
In case select another item : back to initial position

5.
In case select BOTH HLL ACTUATOR DRIVE TO MAX POS (Leveling)
In case select "Start" button : drive to max position upper side
In case select another item : back to initial position

AFLS Fail-safe Function
If the error condition of AFLS occurred during system operation, the system have to fail-safe reaction for prevent dazzling of opposite side driver
AFLS Fail-safe Index
Part
Content
Fail-safe Reaction
Tell-tale
Result
ECU
ECU Hardware
(A/D Converter fail)
1) Levelling : staying in current POS
2) Swivelling : staying in current POS
-
ECU Software
(EEPROM/ROM fail)
1) Levelling : staying in current POS
2) Swivelling : staying in current POS
Control Unit
not initialized
1) Levelling : drive to error POS (H-15)
2) Swivelling : drive to error POS (0°)
Parameter
missing
1) Levelling : drive to error POS (H-15)
2) Swivelling : drive to error POS (0°)
Levelling module
fault
Right
Short circuit
1) Right Levelling : staying in current POS
2) Left Levelling : drive to error POS (H-15)
3) Swivelling : Normal operation
-
Over
temperature
LIN
communication
error
1) Levelling : drive to error POS(H-15) (After)
Levelling : staying in current POS (Before)
2) Swivelling : Normal operation
Left
Short circuit
1) Left Levelling : staying in current POS
2) Right Levelling : drive to error POS(H-15)
3) Swivelling : Normal operation
-
Over
temperature
LIN
communication
error
1) Levelling : drive to error POS(H-15)(After)
Levelling : staying in current POS (Before)
2) Swivelling : Normal operation
Swivelling
module
fault
Right
Short circuit
1) Right Swivelling : staying in current POS
2) Left Swivelling : drive to error POS(0°)
3) Right Levelling : drive to error POS(H-28)
4) Left Levelling : Normal operation
Tell-tale
Over temperature
Stall detected
LIN coummunication
LIN
fault
Before
1) Swivelling : staying in current POS
2) Left Levelling : drive to error POS(H-28)
After
1) Swivelling : drive to error POS(0°)
2) Left Levelling : drive to error POS(H-28)
DBL
supply
fault
Before
1) Swivelling : staying in current POS
2) Left Levelling : drive to error POS(H-28)
After
1) Right Swivelling : staying in current POS
2) Left Swivelling : drive to error POS(0°)
3) Left Levelling : drive to error POS(H-28)
Left
Short circuit
1) Left Swivelling : staying in current POS
2) Right Swivelling : drive to error POS(0°)
3) Left Levelling : drive to error POS(H-28)
4) Right Levelling : Normal operation
Tell-tale
Over temperature
Stall detected
LIN coummunication
LIN
fault
Before
1) Swivelling : staying in current POS
2) Left Levelling : drive to error POS(H-28)
After
1) Swivelling : drive to error POS(0°)
2) Left Levelling : drive to error POS(H-28)
DBL
supply
fault
Before
1) Swivelling : staying in current POS
2) Left Levelling : drive to error POS(H-28)
After
1) Left Swivelling : staying in current POS
2) Right Swivelling : drive to error POS(0°)
3) Left Levelling : drive to error POS(H-28)
AXLE
sensor
Front &
Rear
external(5V) Sensor power supply fault
(short to ground or to Bat)
1) Levelling : drive to error POS(H-15)
2) Swivelling : Normal operation
-
Front
FREQ_LOWER , FREQ_UPPER
1) Levelling : drive to error POS(H-15)
2) Swivelling : Normal operation
Signal line open circuit
1) Levelling : drive to error POS(H-15)
2) Swivelling : Normal operation
Signal line short circuit
Front sensor out of range
Front sensor out of
range
FREQ_LOWER , FREQ_UPPER
1) Levelling : drive to error POS(H-15)
2) Swivelling : Normal operation
Signal line open circuit
1) Levelling : drive to error POS(H-15)
2) Swivelling : Normal operation
Signal line short circuit
Front sensor out of range
Battery
battery voltage too high
1) Levelling : drive to error POS(H-15)
2) Swivelling : staying in current POS(Before)
Swivelling : drive to error POS(0°)
-
battery voltage too low
1) Levelling : drive to error POS(H-15)
2) Swivelling : staying in current POS(Before)
Swivelling : drive to error POS(0°)
LIN physical fault
Short circuit to battery or GND
(physical fault)
Before
1) Levelling : staying in current POS
2) Swivelling : staying in current POS
Tell-tale
After
1) Levelling : drive to error POS(H-28)
2) Swivelling : drive to error POS (0°)
CAN
communication
fault
Speed
signal
fault
speed signal invalid
1) Levelling : slow dynamic mode
2) Swivelling : drive to error POS (0°)
-
supplying ECU not available on
CAN
Steering
angle
signal
fault
Steering wheel sensor not O.K
(signal invalid)
1) Levelling : normal operation
2) Swivelling : drive to error POS (0°)
-
supplying ECU not available on
CAN
Gearbox
signal
fault
Reverse gear signal invalid
1) Levelling : normal operation
2) Swivelling : drive to error POS (0°)
-
supplying ECU not available on
CAN
Accelator pedal signal fault
Accelator pedal signal invalid
1) Levelling : Reduced performance
2) Swivelling : Normal operation
-
supplying ECU not available on
CAN
Engine state signal
fault
Engine state signal invalid
1) Levelling : Normal operation
2) Swivelling : Normal operation
-
supplying ECU not available on
CAN
Yaw rate
signal
fault
Yaw rate signal invalid
1) Levelling : Normal operation
2) Swivelling : Reduced performance
-
supplying ECU not available on
CAN
Brake pedal signal
fault
Brake signal invalid
1) Levelling : Normal operation
2) Swivelling : Reduced performance
-
supplying ECU not available on
CAN
Air suspension
ECU sensor signal
invalid
invalid sensor value from air
suspension ECU
1) Levelling : drive to error POS(H-15)
2) Swivelling : Normal operation
-
Air suspension CAN signal time out
no CAN signal from air suspension
1) Levelling : drive to error POS(H-15)
2) Swivelling : Normal operation
-
CAN
'Bus off'
fault
ECU is isolated from
the CAN network
Air suspension
1) Swivelling : drive to error POS(0°)
2) Levelling : drive to error POS(H-15)
-
Steel
suspension
1) Swivelling : drive to error POS(0°)
2) Levelling : slow dynamic mode
H/wire
AUTO light switch fault
Open wire
1) Swivelling : Normal operation
2) Levelling : Normal operation
-
H/Lamp
switch
fault
Open wire
AFLS OFF
S/W ON
1) Swivelling : DBL activated
2) Levelling :HLL activated
-
AFLS OFF
S/W ON
1) Swivelling : DBL activated
2) Levelling : HLL activated

AFLS Setting Procedure
When it replace AFLS ECU, H/Lamp Unit, Height sensor, it operates in setting procedure by using Diagnostic equipment following belows.
Parameter is composed of three state (Air-suspension,Steel-suspension,Delivery state)
When AFLS setting procedure operate, necessarily confirm suspension type and then download parameter.

x DTC : Diagnostic Trouble Code
DBL : Dynamic bending Light
HLL : Head Lamp Leveling
Vehicle Condition While AFLS Setting
1.
Vehicle on an even surface
2.
No vehicle movement
3.
Gear position in P & N
4.
Ignition switched on & Engine RPM >500RPM
5.
Diagnostic equipment connected
6.
ALL ECUs on CAN mounted and activated
7.
Battery voltage > 10.5 V ( ECU supply to be ensured)
8.
Light switched
9.
AUTO light switch is on.
Action In Case Of Download Wrong Parameter
1.
In case Steel suspension vehicle downloaded Air- suspension parameter
> B1638 (Air-Sus. CAN Signal Timeout) occurred
2.
In case Air- suspension car downloaded Steel suspension parameter
> B1953 (Leveling Sensor signal Fault) occurred
3.
Solution
A.
Download Delivery Parameter
B.
check up B1661(Parameter missing)
C.
Ignition OFF
D.
Ignition ON & Engine RPM > 500RPM
E.
Download matching Paratmer (Steel & Air suspension)
xIn case download steel suspension parameter, Calibration have to operate up to setting procedure
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