Test Description
WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
The numbers below refer to the step numbers on the diagnostic table.
The normal operating voltage of the instrument panel dimmer switch is 0.5-11.5 volts.
If the value is above 11.5 volts, with the sensor disconnected, an open or short to voltage exists. If the value is below 0.5 volts, a short to ground exists.