Power Window Switch Does Not Illuminate
WARNING: This page is about a different car, the 1997 Lincoln Mark VIII. However, it is still accessible from the selected car via links, so may be relevant.
- Check Instrument Panel Illumination - Turn headlight switch to PARK position. If instrument panel illuminates and master window switch does not illuminate, go to next step. If instrument panel illuminates and right window switch does not illuminate, go to step 4). If instrument panel does not illuminate, see INSTRUMENT PANEL article.
- Check Input To Master Window Switch - Disconnect master switch 5-pin connector. Turn headlight switch to PARK position. Measure voltage between ground and Red/Black wire at master switch 5-pin connector. If voltage is 10 volts or greater, go to next step. If voltage is less than 10 volts, repair open in Red/Black wire. Retest system.
- Check Master Switch Ground Circuit - Measure resistance between ground and Black wire at master switch 5-pin connector. If resistance is less than 5 ohms, replace master switch. If resistance is greater than 5 ohms, repair open in Black wire. Retest system.
- Check Input To Right Window Switch - Disconnect right window switch connector. Measure voltage between ground and Red/Black wire at right window switch connector. If voltage is 10 volts or greater, go to next step. If voltage is less than 10 volts, repair open in Red/Black wire. Retest system.
- Check Right Window Switch Ground Circuit - Measure resistance between ground and Black wire at right switch connector. If resistance is less than 5 ohms, replace right switch. If resistance is greater than 5 ohms, repair open in Black wire. Retest system.