Inspection Procedure

INSPECT LUMBAR SUPPORT SWITCH
1. Remove the lumbar support switch.
2. Measure the resistance.
  Standard:
  
  Upper side control
  
  Fig 1: Terminals Resistance Reference Chart (Upper Side Control)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Lower side control
  
  Fig 2: Terminals Resistance Reference Chart (Lower Side Control)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 3: Inspecting Lumbar Support Switch
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPLACE LUMBER SUPPORT SWITCH

OK: Go to next step.
INSPECT POWER SEAT MOTOR (See INSPECTION )
NG: REPLACE POWER SEAT MOTOR

OK: Go to next step.
CHECK WIRE HARNESS (POWER SEAT CONTROL SWITCH - POWER SEAT MOTOR AND BODY GROUND)
1. Disconnect the P23 switch, P30 and P31 motor connectors.
2. Measure the resistance and voltage of the wire harness side connectors.
  Standard:
  
  Fig 4: Terminals Resistance And Voltage Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 5: Checking Wire Harness (Power Seat Control Switch - Power Seat Motor And Body Ground)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR AND REPLACE HARNESS AND CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )