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Home >> Lexus >> 2005 >> LX 470 >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Driver Door Control System - Diagnostics >> Circuit Inspection >> Power source circuit >> Inspection Procedure

Inspection Procedure

  1. Check ECU-IG1 and AM1 fuse. 

    CHECK: 

    Check continuity of ECU-IG1 and AM1 fuse.

    OK: 

    1. Continuity 
    1. NG: Replace faulty fuse. 
    2. OK: Go to Next Step. 
  2. Check voltage between terminals BECU, SIG, BDR and GND of power window master switch connector. 

    PREPARATION: 

    Turn the ignition switch OFF.

    CHECK: 

    Measure the voltage between terminals BECU, SIG, BDR and GND.

    OK: 

    1. Voltage: 10 - 14V 
    1. OK: Proceed to next circuit inspection shown on problem symptoms table (See  PROBLEM SYMPTOMS TABLE   ). 
    2. NG: Go To Next Step 
  3. Check wire harness and connector between power window master switch and body ground (See  PROCEDURE  ). 
    1. NG: Repair or replace wire harness or connector. 
    2. OK: Proceed to next circuit inspection shown on problem symptoms table (See  PROBLEM SYMPTOMS TABLE   ).