Step 10 - Inspect Rear Lifter Motor PTC Thermistor Operation

WARNING: This page is about a different car, the 2002 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

Connect the positive (+) lead from the battery to terminal 1, the positive (+) lead from the ammeter to terminal 2 and the negative (-) lead to the battery negative (-) terminal, then move the seat cushion to the lowest position.

Fig 1: Testing Lifter Motor PTC Thermistor (1 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Continue to apply voltage, check that the current changes to less than 1 ampere within 4 to 90 seconds.
Disconnect the leads from the terminals.

Fig 2: Testing Lifter Motor PTC Thermistor (2 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Approximately 60 seconds later, connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1, check that the seat cushion begins to ascend.

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