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Inspection Procedure

For circuit wiring diagram, see Fig 1.

  1. Inspect the seat memory switch. See Fig 2. If the results are OK, go to the next step. If the results are not good, replace the seat memory switch.
  2. Check the seat memory switch and seat position control ECU wiring harnesses. See Fig 3. If the continuity is OK, check and replace the position control ECU assembly. See POSITION CONTROL ECU ASSEMBLY  under REMOVAL & INSTALLATION. If the continuity is not good, check and replace the harness and connector.
Fig 1: Memory Switch Circuit Wiring Diagram
G00176346Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Inspecting Seat Memory Switch Continuity
G00176347Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 3: Inspecting Memory Switch & Position Control ECU Wiring Harness Continuity
G00176348Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002