Inspection Procedure

FUNCTION CHECK (OPERATION)
1. Check whether the manual operation is normal by using the power seat switch.
1. NG: FLOW TABLE 1
2. OK: Go to next step.
FUNCTION CHECK (MEMORY)
1. Check whether the power seat memory function is normal.
1. NG: FLOW TABLE 2
2. OK: Go to next step.
FUNCTION CHECK (REPRODUCING OPERATION)
1. Check whether the reproducing operation works under any of the following conditions.
  
  Fig 1: Reproducing Operation Conditions Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. When the reproducing operation does not work under all the conditions, proceed to A.
  2. When the reproducing operation works under one of the conditions, proceed to B.
1. B: CHECK AND REPLACE POSITION CONTROL ECU ASSY (See TERMINALS OF ECU )
2. A: Go to next step.
READ VALUE OF LEXUS HAND-HELD TESTER
1. Using the hand-held tester, check the power seat condition by the ECU data monitor.
  SEAT ECU
  
  Fig 2: Power Seat Condition Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. When the position memorizing does not work, proceed to A.
  2. When all items work or the seat memory does not work, proceed to B.
  3. When the P range or the vehicle's speed does not work, proceed to C.
  1. B: CHECK AND REPLACE POSITION CONTROL ECU ASSY (See TERMINALS OF ECU )
  2. C: TO INSTRUMENT PANEL & METER SECTION
  3. A: Go to next step.
CHECK WIRE HARNESS
1. Check the continuity of the wire harness between the seat ECU and the position control sensor a malfunctioning part detected by the ECU data.
  
  Fig 3: Identifying Position Control Sensor Connector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 4: Position Control Sensor Continuity Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
2. OK: REPLACE POSITION CONTROL SENSOR