Grid Filament Testing
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 1992 Toyota Tercel, 1992 Toyota Supra, 1992 Toyota Previa, 1992 Toyota Paseo, and 1992 Toyota MR2. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
When testing grid wires with voltmeter, wrap aluminum foil around end of test probe, then press foil to grid wire. This will prevent probe from damaging grid wire
- To locate breaks in grid wire filaments, attach a voltmeter to middle portion of each filament. Attach other meter probe to vertical section of window grid. See Fig 1.
- If a grid is broken, meter will register zero volts or about 10 volts, depending on if grid is broken between or outside test leads. If wire is unbroken, meter will register about 5 volts. To locate break, move probe along wire until voltage changes abruptly.