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Home › Toyota › 2004 › Avalon XLS › Repair and Diagnosis › Body & Frame › Seats › Power Seat Control System (W/Driving Position Memory - Diagnostics › Circuit Inspection › Seat Memory Switch › Inspection Procedure

Inspection Procedure

  1. Check voltage between each terminal of the seat memory switch and SGND of Seat Position Control ECU connector. 

    PREPARATION: 

    Remove Seat Position Control ECU with connectors still connected.

    CHECK: 

    Measure voltage between terminal of the seat memory switch and SGND of Seat Position Control ECU connector.

    (The illustration shows inspection of the Memory 1 as an example.)

    OK: 

    Fig 1: Checking Voltage Between Each Terminal Of Seat Memory Switch And SGND Of Seat Position Control ECU Connector
    G02836257Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINALS VOLTAGE REFERENCE

    At each terminal with switch ON 0 V
    At each terminal with switch OFF 10-14 V
    1. OK: Proceed to next circuit inspection shown in problem symptom table (See  PROBLEM SYMPTOMS TABLE  ). 
    2. NG: Go to next step. 
  2. Check seat memory switch. 

    PREPARATION: 

    Disconnect seat memory switch connector.

    CHECK: 

    Check continuity of each terminal.

    OK: 

    Fig 2: Checking Seat Memory Switch
    G02836258Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINALS CONTINUITY REFERENCE

    Switch position Terminal
    SET switch ON 1-2
    Memory swtich 1 2-3
    Memory switch 2 2-4
    1. NG: Replace seat memory switch. 
    2. OK: Go to next step. 
  3. Check harness and connectors between Seat Position Control ECU and seat memory switch (See  HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS  ). 
    1. NG: Repair or replace harness or connector. 
    2. OK: Check and replace Seat Position Control ECU. 
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