Inspect Front Vertical Motor PTC Thermistor Operation

( ): Passenger side 

1. Connect the positive (+) lead from the battery to terminal 1 (2), the positive (+) lead from the ammeter to terminal 2 (1) and the negative (-) lead to the battery negative (-) terminal, then move the seat cushion to the highest position.
2. Continue to apply voltage, check that the current changes to less than 1 ampere within 4 to 90 seconds.
   Fig 1: Inspecting Front Vertical Motor PTC Thermistor Operation (Passenger Side) (1 Of 2)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Disconnect the leads from the terminals.
4. Approximately 60 seconds later, connect the positive (+) lead from the battery to terminal 2 (1) and the negative (-) lead to terminal 1 (2), check that the seat cushion begins to descend.

If operation is not as specified, replace the seat adjuster.

Fig 2: Inspecting Front Vertical Motor PTC Thermistor Operation (Passenger Side) (2 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002