AUTO LEVELING CONTROL MODULE

id091800011000


Purpose

•  The auto leveling control module calculates the target optical axis based on the vehicle height signal and outputs the target optical axis signal to the headlight leveling actuator.

Function

•  The auto leveling control module performs control of the headlight auto leveling system.
•  The auto leveling control module records the vehicle height while it is unoccupied.
•  Even if the battery is disconnected, the unoccupied vehicle height recorded by the auto leveling control module is not erased.
•  The new auto leveling control module does not record the vehicle height while it is unoccupied.
•  When the headlight auto leveling system initialization is performed after the auto leveling control module is replaced, the auto leveling control module inputs the vehicle height from the auto leveling sensor and records the vehicle height in unloaded condition.

Automatic configuration function

•  The auto leveling control module prior to replacement stores the vehicle specification information.
•  A new auto leveling control module does not store any vehicle specification information.
•  When the ignition is switched ON after the auto leveling control module is replaced, the auto leveling control module reads the vehicle specification information sent via CAN transmission from the instrument cluster using the automatic configuration function, and stores it.


On-board diagnostic function

•  The auto leveling control module is equipped with an on-board diagnosis function which records DTCs in the event of a malfunction.
Malfunction detection function
―  Detects malfunctions of the headlight auto leveling system related parts.
Display Function
―  If any malfunction is detected, the headlight auto-leveling malfunction indicator light in the instrument cluster flashes to notify the driver of a system malfunction.


Operation

•  For the auto leveling control module operation, refer to "HEADLIGHT AUTO LEVELING SYSTEM". (See HEADLIGHT AUTO LEVELING SYSTEM.)

Fail-safe

DTC No.

Fail-safe function
B1041:54
•  The headlight leveling actuator is stopped at the position when the malfunction is determined.
B1044:01
•  The headlight leveling actuator is stopped at the position when the malfunction is determined.
U0001:88
•  The headlight leveling actuator is stopped at the position when the malfunction is determined.
U0100:00
•  The headlight leveling actuator is stopped at the position when the malfunction is determined.
U0131:00
•  Control of the headlight auto leveling system is continued.
U0140:00
•  The headlight leveling actuator is stopped at the position when the malfunction is determined.
U0155:00
•  Control of the headlight auto leveling system is continued.
U0320:09
•  Control of the headlight auto leveling system is continued.
U0420:68
•  Control of the headlight auto leveling system is continued.
U0423:68
•  Selector lever R position (ATX)/shift lever reverse (MTX) signal error
―  Control of the headlight auto leveling system is continued.
•  Selector lever R position (ATX)/shift lever reverse (MTX) signal not determined
―  Control of the headlight auto leveling system is continued.
U2005:86
•  The headlight leveling actuator is stopped at the position when the malfunction is determined.
U2300:54
•  Control of the headlight auto leveling system is continued.
U2300:55
•  The headlight leveling actuator is stopped at the position when the malfunction is determined.
U2300:56
•  Control of the headlight auto leveling system is continued.
U3000:42
•  The headlight leveling actuator is stopped at the position when the malfunction is determined.
U3000:49
•  RAM/ROM malfunction
―  The headlight leveling actuator is stopped at the position when the malfunction is determined.
•  Headlight leveling system function malfunction
―  Not applicable
•  CAN hardware malfunction
―  The headlight leveling actuator is stopped at the position when the malfunction is determined.
U3003:16
•  The headlight leveling actuator is stopped at the position when the malfunction is determined.
U3003:17
•  The headlight leveling actuator is stopped at the position when the malfunction is determined.