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Home >> Lexus >> 2005 >> LX 470 >> Repair and Diagnosis >> Body & Frame >> Seats >> Power Seat Control System - Diagnostics >> Circuit Inspection >> Position Sensor Circuit >> Inspection Procedure
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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: 

    VOLTAGE CONDITION

    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.
    O/P --> body ground with motor turning half of 8 V voltage
    Fig 1: Checking Position Sensor
    G02987539Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: Proceed to next circuit inspection shown on problem symptom table (See  PROBLEM SYMPTOMS TABLE   ). 
    2. NG: Go to Next Step. 
  2. Check harness and connectors between Power Seat Control ECU and position sensors (See  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   ).