Inspection Procedure

FUNCTION CHECK (OPERATION)
1. Check that the manual operations via the power seat switch work normally.
1. NG: FLOW TABLE 1
2. OK: Go to next step.
FUNCTION CHECK (MEMORY)
1. Perform a memorizing operation properly, and then check whether the memory functions normally and the buzzer sounds to inform that the memorizing operation has been done.
  NOTE:
  - The memory does not function when the SET, M1 and M2 switches are simultaneously pressed.
  - In case of mis-operation, the memory does not function unless the setting once turned off.
1. OK: NORMALITY
2. NG: Go to next step.
READ VALUE OF LEXUS HAND-HELD TESTER
1. Using the hand-held tester, check the power seat condition by the hand-held tester.
  Standard:
  
  SEAT ECU
  
  Fig 1: Power Seat Condition Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. When the seat memory switch does not work, proceed to A.
  2. When all items work or all items except the seat memory switch work, proceed to B.
1. B: CHECK AND REPLACE POSITION CONTROL ECU ASSY (See TERMINALS OF ECU )
2. A: Go to next step.
INSPECT SEAT MEMORY SWITCH
1. Inspect the front power seat switch continuity.
  
  Fig 2: Inspecting Seat Memory Switch
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Memory switch:
  
  Fig 3: Seat Memory Switch Continuity Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE SEAT MEMORY SWITCH
2. OK: Go to next step.
CHECK WIRE HARNESS
1. Check the continuity of the wire harness between the seat memory switch and the door ECU.
  
  Fig 4: Checking Continuity Between Seat Memory Switch & Door ECU
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 5: Seat Memory Switch & Door ECU Continuity Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
2. OK: Go to next step.
REPLACE MULTIPLEX NETWORK DOOR COMPUTER FR LH
1. Exchange the driver's door ECU with new one. Or, check that no malfunction exists in all the data relative to the memory by carrying out a data monitor of the driver's door ECU by using the temporarily installed passenger's door ECU.
1. NG: CHECK AND REPLACE POSITION CONTROL ECU ASSY (See TERMINALS OF ECU )
2. OK: REPLACE MULTIPLEX NETWORK DOOR COMPUTER FR LH