GF54.30-P-2007RT Instrument Cluster Illumination, Function

GF54.30-P-2007RT Instrument Cluster Illumination, Function

Activating instrument cluster lighting
The lighting of the instrument cluster (A1) is switched on automatically when the instrument cluster is activated. The details of the instrument cluster are only now clearly visible on account of the "Black-Screen technology".

The instrument cluster is activated by the following events:
^ CAN message side lights "ON"
^ Circuit 15R ON
^ Press the trip odometer reset button (A1s3) or press the instrument and controls illumination button, dim (A1s5) or instrument and controls illumination button, bright (A1s4)
^ Driver door is open.
^ Driver door is closed

The intensity of the lighting is dependent on:
^ the CAN message from the rain/light sensor (B38/2),
^ the status of "circuit 58d" (standing lamp information),
^ the position of the instrument and controls illumination button, dim or instrument and controls illumination button, bright.

Controlling the display lighting
In the event of the CAN message standing lamp "ON" the current position of the Trip odometer reset button is transmitted via the interior CAN.
With this state the signal from the rain/light sensor via the overhead control panel control unit (N70) is ignored.

Controlling display lighting by means of sensor
"Circuit 58d "is set to 0 % by the CAN message standing lamp "OFF". As a result the CAN message is read in by the rain/light sensor via the overhead control panel control unit and the "Day"/ "Night" signal is transmitted on CAN-B.

Night signal:
The brightness of the instrument cluster can be regulated via the instrument and controls illumination button, dim or instrument and controls illumination button, bright.

Day signal:
The brightness of the instrument cluster is regulated via the phototransistor. Only a minimum setting via the instrument and controls illumination button, dim or Instrument and controls illumination button, bright is possible.
The display brightness is only dependent on the ambient brightness via the rain/light sensor.
In the event of a defect in the rain/light sensor "circuit 58d" is set to 100 % by the overhead control panel control unit. The display brightness is now adjustable via the instrument and controls illumination button, dim or Instrument and controls illumination button, bright.