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Home >> Toyota >> 2005 >> Avalon XLS >> Repair and Diagnosis (Single Page) >> Body & Frame >> Seats >> Front Power Seat Control System (W-Memory) >> Memory Switch Circuit >> Inspection Procedure
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Inspection Procedure

  1. READ VALUE OF HAND-HELD TESTER 
    1. Connect the hand-held tester (with CAN VIM) to the DLC3.
    2. Turn the ignition switch on (IG).
    3. Read the DATA LIST.

      D_SEAT (Power Seat ECU): 

      Fig 1: Data List - Power Seat ECU
      G02975751Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK : Condition status can be displayed. 

    1. NG : Go to step 2 
    2. OK : PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (SEE  PROBLEM SYMPTOMS TABLE   ) 
  2. INSPECT SEAT MEMORY SWITCH 
    1. Remove the seat memory switch.
    2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      1 (M1) - 4 (E) SW1 switch pushed Below 1 Ω
      2 (M2) - 4 (E) SW2 switch pushed Below 1 Ω
      3 (MRY) - 4 (E) SET switch pushed Below 1 Ω
      Fig 2: Inspecting Seat Memory Switch
      G02975752Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG : REPLACE SEAT MEMORY SWITCH 
    2. OK : Go to next step. 
  3. CHECK HARNESS AND CONNECTOR (SEAT MEMORY SWITCH CIRCUIT) 
    1. Measure the voltage according to the value (s) in the table below.

      Standard: 

      SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      I7-1 (M1) - I7-4 (E) Ignition switch on (IG) 10 to 14 V
      I7-2 (M2) - I7-4 (E) Ignition switch on (IG) 10 to 14 V
      I7-3 (MRY) - I7-4 (E) Ignition switch on (IG) 10 to 14 V
      Fig 3: Checking Harness & Connector - Seat Memory Switch Circuit
      G02975753Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG : Go to step 4 
    2. OK : PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (SEE  PROBLEM SYMPTOMS TABLE   ) 
  4. CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSY - SEAT MEMORY SWITCH) 
    1. Disconnect the I1 connector from the door ECU.
    2. Measure the resistance according to the value (s) in the table below.

      Standard: 

      SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      I7-1 (M1) - I1-22 (M1) Always Below 1 Ω
      I7-2 (M2) - I1-23 (M2) Always Below 1 Ω
      I7-3 (MRY) - I1-25 (MM) Always Below 1 Ω
      I7-4 (E) - Body ground Always Below 1 Ω
      I7-1 (M1) - Body ground Always 10 kΩ or higher
      I7-2 (M2) - Body ground Always 10 kΩ or higher
      I7-3 (MRY) - Body ground Always 10 kΩ or higher
      Fig 4: Checking Harness & Connector - Outer Mirror Control ECU Assy - Seat Memory Switch
      G02975754Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK : REPLACE OUTER MIRROR CONTROL ECU ASSY 
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