Section 311 (Front Power Seat Control System (W/Memory) - Diagnosis): Pre-Check

WARNING: This page is about a different car, the 2004 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT ECU DATA MONITOR WITH HAND-HELD TESTER
1. Using hand-held tester, check the power seat system by the data monitor.
  Standard:
  
  SEAT ECU
  
  Fig 1: Inspecting ECU Data Monitor With Hand-Held Tester Specifications Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT ACTIVE TEST WITH HAND-HELD TESTER
1. Using hand-held tester, check the power seat system operation the data monitor.
  SEAT ECU
  
  Fig 2: Inspecting Active Test With Hand-Held Tester Specifications Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002