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Home >> Lexus >> 2005 >> GS 300 >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Engine Immobilizer System - Diagnostics >> Circuit Inspection >> Inspection Procedure

Inspection Procedure

  1. Check transponder key coil (See  INSPECTION  ). 
    1. NG: Replace transponder key coil. 
    2. OK: Go to next step. 
  2. Check harness and connector between transponder key amplifier and ECM. 
    1. NG: Repair or replace harness or connector. 
    2. OK: Go to next step. 
  3. Does the system operate normally after replacement of transponder key amplifier? 
    1. YES: Replace transponder key amplifier. 
    2. NO: Replace ECM. 
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