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

  1. Check ECU-IG1 fuse. 
    1. NG: CHECK FOR SHORT IN ALL THE HARNESS AND COMPO-NENTS CONNECTED TO ECU-IG1 FUSE, AND REPAIR THEM. 
    2. OK: Go to Next Step. 
  2. Check voltage between terminal IG of Power Seat Control ECU connector and body ground. 

    PREPARATION: 

    Remove Power Seat Control ECU with connectors being connected.

    CHECK: 

    Measure voltage between terminal IG of Power Seat Control ECU connector and body ground when ignition switch is ON and OFF.

    OK: 

    VOLTAGE CONDITION

    Ignition switch Voltage
    ON 10-14V
    OF 0 V
    Fig 1: Checking Voltage Between Terminal IG Of Power Seat Control ECU Connector
    G02987531Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: Proceed to next circuit inspection shown on problem symptom table (See  PROBLEM SYMPTOMS TABLE   ). 
    2. NG: Check and repair harness or connector between Power Seat Control ECU and battery.