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Home >> Lexus >> 2005 >> IS 300 Base, Standard >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Body Control System - Diagnostics >> Circuit Inspection >> Door Courtesy Switch Circuit >> Inspection Procedure

Inspection Procedure

  1. Check courtesy switch (See  INSPECTION  ). 

    NG: Replace the courtesy switch. 

    OK: Go to next step 

  2. Check that there is a grounding malfunction caused by looseness of the tighten screw. 

    NG: Install screw. 

    OK: Go to next step 

  3. Check wire harness and connector between courtesy light and body ECU, courtesy switch and body ECU. 

    NG: Repair or replace wire harness or connector. 

    OK: Proceed to next circuit inspection shown on problem symptoms table (See  PROBLEM SYMPTOMS TABLE  ). 

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