Unit | Description
Combination meter | Controls the meter illumination with the illumination control switch signal from the meter control switch and the position light request signal from BCM via CAN communication.
BCM | Transmits the position light request signal to the combination meter via CAN communication.
Meter control switch | Transmits the following signals to the combination meter.

- Illumination control switch signal (+)

- Illumination control switch signal (-)

Combination switch (Lighting switch) | Using the combination switch reading function, BCM reads the combination switch status.