1) Inspect Driver's Power Seat Switch Continuity

Fig 1: Identifying Driver's Power Seat Control Switches

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Slide switch:

Fig 2: Inspecting Driver's Power Seat Switch For Continuity Chart - Slide Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Front vertical switch:

Fig 3: Inspecting Driver's Power Seat Switch For Continuity Chart - Front Vertical Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Lifter switch:

Fig 4: Inspecting Driver's Power Seat Switch For Continuity Chart - Lifter Switch

Reclining switch:

Fig 5: Inspecting Driver's Power Seat Switch For Continuity Chart - Reclining Switch

If continuity is not as specified, replace the switch.