Operating Light Control Rheostat does not Change Light Brightness: Description

The meter ECU receives signals from this circuit to adjust the illumination of the meter and instrument panel. The meter ECU sets the illumination level based on the user operation of the light control rheostat up or down switches.

HINT: 

• The meter illumination level can be adjusted by pressing the light control rheostat up or down switches.
• The meter illumination dims when the light control switch is turned to the tail or head position at night.
• Setting the meter illumination to maximum brightness cancels the above dimming of the meter illumination.