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Avalon, Camry, Celica & Supra

  1. Remove light control rheostat. Light control rheostat is located on left side of instrument panel. Using jumper wires, connect positive battery terminal to light control rheostat terminal No. 1 and negative battery terminal to terminal No. 3. See Figure.
  2. Connect voltmeter positive lead to terminal No. 2 and negative lead to terminal No. 3. Note voltage reading. Rotate light control rheostat knob or thumbwheel and observe voltage reading. Voltage should change as knob or thumbwheel is rotated. If voltage does not change, replace light control rheostat.
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