Dash Lights Brightness Controller Input Test
Turn ignition off. Carefully pry dash lights brightness controller from instrument panel. Disconnect dash lights brightness controller 3-pin connector. Check dash light brightness controller connector for loose, damaged or corroded terminals If problem exists, repair as necessary. If problem does not exist, perform dash lights brightness controller input test. See Fig 1 . If any input test is not as specified, repair indicated fault. If all input tests are as specified, replace dash lights brightness controller.