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Inspection Procedure

  1. Check position sensor. 

    CHECK: 

    Measure voltage between terminal O/P of Power Seat Control ECU and body ground with connector being connected.

    OK: 

    TESTER CONNECTION VOLTAGE

    Tester Connection Condition Voltage
    O/P <--> body ground Motor stopped (Check several times with the motor in a different position each time.) 0 V or 8 V voltage according to stop position.
    with motor turning half of 8 V voltage
    1. OK : Proceed to next circuit inspection shown problem symptom table (See  PROBLEM SYMPTOMS TABLE  ). 
    2. NG : GO TO NEXT STEP 
    Fig 1: Identifying Terminal O/P Of Power Seat Control ECU
    G03374932Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Check harness and connectors between Power Seat Control ECU and position sensors (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
    1. NG : Repair or replace harness or connectors. 
    2. OK : Proceed to next circuit inspection shown on problem symptom table (See  PROBLEM SYMPTOMS TABLE  ).