GF82.10-P-1004RC Cornering Illumination Function
GF82.10-P-1004RC Cornering Illumination Function
- with CODE (614) Bi-xenon headlamp unit
- with CODE (618) Bi-xenon headlamps
- with CODE (619) Cornering illumination
Function requirements for cornering illumination, general
^ Low beam ON
^ Engine running (circuit 61 ON) n > 300 rpm
^ Turn signaling active and speed v < 40 km/h
(without code (494) USA version) or
^ speed v < 60 km/h (with code (494) USA version) or
^ rotation angle recognized and speed v < 70 km/h
Cornering illumination, general
The cornering illumination control makes it possible in urban traffic to provide improved illumination of the roadway in the turning direction, in addition to the low beams. The cornering illumination control represents an additional light function which is implemented with the aid of special front fog lamps (cornering illumination with integrated front fog lamp function).
Cornering illumination function sequence
The direct input factors are the steering wheel angle, recorded by the steering angle sensor (N49), the turn signaling function, defined by the switch position of the combination switch (S4), because they describe the direction requirement of the driver.
The vehicle speed influences the system behavior of the turning light actuation.
At a low vehicle speed, a low switch-on point is required for the cornering illumination to be activated early on in urban traffic. The status of circuit 61 in vehicles with engine 113 or 271 is defined by the driver-side SAM control unit with fuse and relay module (N10/1). In vehicles with engine 272, the status of circuit 61 is provided by the ME-SFI [ME] control unit (N3/10) on the engine compartment CAN.
The data of the steering angle sensor and the switch position of the combination switch are read in by the steering column tube module (N80) and transmitted via the interior CAN to the driver side SAM control unit.
Information on the current vehicle speed is provided by the instrument cluster (A1), and the status of the reverse gear is provided by the central gateway control unit (N93) on the interior CAN.
The driver-side SAM control unit reads in all of the relevant information via the interior CAN and actuates the left front fog lamp (E5/1) or the right front fog lamp (E5/2) accordingly.
Only one cornering light is actuated: the inside corner light during forward travel and the outside corner light during reverse travel. The corresponding cornering illumination is switched on and off with dimming in each case.
In order to ensure the illumination of the roadway edge on the inside of the curve (e.g. in a roundabout) when the steering wheel is turned one way and the turning direction is in the opposite direction, the request by the turn signaling function below a speed of v = 40 km/h has a higher priority than the request for recognizing the steering wheel angle.
When the reverse gear is engaged, only the data of the steering angle sensor is evaluated.
When the function request suddenly no longer exists, the corresponding cornering illumination remains switched on for a holding time of approx. t = 2 s and is switched off within t = 2 s with dimming.
When the steering wheel angle or the turn signaling function request is changed quickly, both cornering lights can light up briefly.
The active front fog lamp is switched off immediately without dimming under the following conditions:
^ Diagnosis
^ Activation of the hazard warning flasher function
^ Low beams OFF
