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Power Window System Current Test: Celica

  1. Disconnect driver's power window master switch harness connector. Connect positive lead of ammeter to driver's power window master switch harness connector (harness side) terminal No. 8 (Green wire).
  2. Connect ammeter negative lead to negative terminal of 12-volt battery. Connect jumper wire between positive battery terminal and driver's power window master switch harness connector terminal No. 6 (Red wire). See Figure.
  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 described, replace driver's power window master switch. See POWER WINDOW SWITCH  under REMOVAL & INSTALLATION. If current is not as described, check and repair appropriate circuit.
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