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Power Window System Current Test: 4Runner

  1. Disconnect driver's power window switch connector. Connect positive lead of ammeter to driver's power window switch connector (harness side) terminal No. 1. See Figure.
  2. Connect ammeter negative lead to negative terminal of 12-volt battery. Connect jumper wire from positive battery terminal to driver's power window switch connector terminal No. 5.
  3. As driver's window is lowered, current should be about 7 amps. When window operation is stopped, current should increase to about 14.5 amps or more. If current is as specified, replace driver's power window switch. If current is not as specified, check and repair appropriate circuit.
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