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Home >> Lexus >> 2003 >> RX 300 AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Seats >> Power & Heated Seats >> Component Tests >> Power Seat Motor PTC Thermistor (Lifter)

Power Seat Motor PTC Thermistor (Lifter)

  1. Connect the positive (+) lead from the battery to terminal No. 2, the positive (+) lead from the ammeter to terminal No. 1 and the negative (-) lead to the battery negative (-) terminal, then move the seat cushion to the highest position. See CONNECTOR IDENTIFICATION .
  2. Continue to apply voltage, check that the current changes to less than 1 ampere within 4-90 seconds.
  3. Disconnect the leads from the terminals.
  4. Approximately 60 seconds later, connect the positive (+) lead from the battery to terminal No. 1 and the negative (-) lead to terminal No. 2, check that the seat cushion begins to descend. If operation is not as specified, replace the seat adjuster. See FRONT SEAT  under REMOVAL & INSTALLATION.
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