I have a 2010 Aveo LT hatchback with "WHB". None of the dimmer controlled dash lights come on when the headlights are on. I bought an electronic service manual from AllData. The electrical drawings are incorrect, and do not accurately reflect the actual wiring of the interior dimmer controlled dash instrument lights.
No fuses are blown.
I checked voltages at the dimmer switch connector with dimmer switch disconnected. terminals 1 & 3 read +5.7 volts DC, terminal 2 reads 0 volts, and is at DC ground.
Any suggestions how to troubleshoot, or where to find valid electrical drawings for this Aveo?