Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPLYMOUTH1994GRAND VOYAGER BASE, 41TEREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTHEATED GLASS/DEFOGGERSDEFOGGER - REAR WINDOWTESTINGGRID FILAMENT TEST
1994 Plymouth Grand Voyager Base, 41TE
Grid Filament Test
1994 Plymouth Grand Voyager Base, 41TESECTION Grid Filament Test
- Using a voltmeter with a 0-15 volt range, contact bus bar connecting grid lines on passenger-side of glass with negative lead of voltmeter at terminal "A". Contact driver-side bus bar with positive lead at terminal "B". See Fig 1 .
- Turn ignition and control switches to ON position. Reading should be 10-14 volts. Lower voltage indicates a poor ground. Attach negative voltmeter lead to ground. Voltage reading should not vary.
- Contact negative lead to passenger-side bus bar at terminal "A". Probe each grid line at midpoint with positive lead. A 6-volt reading indicates line is good. A zero volt reading indicates a break between midpoint and driver-side bus bar line.
- A 10-14 volt reading indicates a break between midpoint and passenger-side bus bar line. Move positive lead toward break. Voltage will change when break is crossed.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.