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Inspection Procedure

For circuit wiring diagram, see Fig 1.

  1. Inspect the power seat control switch. See Fig 2. If the continuity is OK, go to the next step. If the continuity is not good, replace the seat control switch. See POWER SEAT SWITCH  under REMOVAL & INSTALLATION.
  2. Check the power seat control switch and the seat position control ECU. See Fig 3. If the continuity is OK, check and replace the seat position control ECU. See POSITION CONTROL ECU ASSEMBLY  under REMOVAL & INSTALLATION. If the continuity is not good, repair or replace the harness or connector.
Fig 1: Power Seat Control Switch Circuit Wiring Diagram
G00176349Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Inspecting Power Seat Control Switch Continuity
G00176350Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 3: Inspecting Control Switch & Control ECU Wiring Harness Continuity
G00176351Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002