Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSE (PWR SEAT)
1. Remove the PWR SEAT fuse from driver side J/B.
2. Measure the resistance.
  Standard: Below 1 Ω
NG: REPLACE FUSE

OK: Go to next step.
INSPECT POWER SEAT SWITCH ASSY
1. Disconnect the power seat switch connector.
2. Measure the resistance of each terminal, as shown in Fig 1 and Fig 2.
  
  Fig 1: Inspecting Power Seat Switch Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 2: Power Seat Switch Assy. Tester Connection Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NG: REPLACE POWER SEAT SWITCH ASSY (See OVERHAUL )
  
  OK: Go to next step.
CHECK HARNESS AND CONNECTOR (POWER SOURCE)
1. Measure the voltage of each terminal of the wire harness side connectors.
  Standard:
  
  Fig 3: Harness And Connector (Power Source) Voltage Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of each terminal, as shown in Fig 5 and Fig 4.
  Standard:
  
  Fig 4: Harness And Connector (Power Source) Resistance Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 5: Inspecting Harness And Connector (Power Source)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
  
  OK: Go to next step.
INSPECT POWER SEAT MOTOR ASSY (LUMBAR)
1. Check that the motor rotates smoothly when the battery is connected to the lumbar support adjuster motor connector terminals.
  
  Fig 6: Inspecting Power Seat Motor Assy (Lumbar) P18
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 7: Power Seat Motor Assy (Lumbar) Measurement Condition Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NG: REPLACE POWER SEAT MOTOR ASSY (See OVERHAUL )
  
  OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SEAT SWITCH ASSY - POWER SEAT MOTOR)