GF54.30-D-2007H Instrument Cluster Illumination, Function

GF54.30-D-2007H Instrument Cluster Illumination, Function

- with CODE (JA5) Light/rain sensor

The instrument cluster illumination (A1) switches on automatically when the instrument cluster is activated.

Networking
The brightness of the instrument cluster is adjusted according to the rain/light sensor (B38/2). The rain/light sensor is read in by the DBE control unit (N70). The read-in light values are placed on the Controller Area Network bus class B (interior) (CAN-B) by the overhead control panel control unit. The SAM control unit (N10) reads in the light values from CAN-B and on the basis of these light values decides whether it is day or night. The SAM control unit places the information as to whether it is day or night, on CAN-B. The instrument cluster reads this information from CAN-B and switches the instrument cluster illumination to day or night mode.

Intensity adjustment in night-time mode
Apart from the automatic brightness adjustment function, the brightness of the instrument cluster can also be readjusted using the following buttons:
- Plus button (A1s3)
- Minus button (A1s4)

Intensity adjustment during daytime use
The brightness of the instrument cluster cannot be adjusted manually.

Set switch and controls illumination
The switch and controls illumination is activated by the following components:
- Switching on the vehicle lights (e.g. standing lamps, driving lamps)
- With automatic driving lights, via the rain/light sensor and the rotary light switch (S1) at the "AUTO" position

If the standing lamps are switched on, the setting of the plus button and minus button is used as the controlled variable by the DBE control unit, whereby the rain/light sensor is not taken into consideration. With the automatic driving lights, the brightness of the switch and controls illumination is determined via the rain/light sensor. Its signals are evaluated by the DBE control unit and relayed via CAN-B. All the control units which require the signal from the rain/light sensor pick off the signal from CAN-B.