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Home >> Lexus >> 2008 >> LS 460 >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Theft Deterrent >> Theft Deterrent System >> Certification ECU Power Source Circuit >> Inspection Procedure

Inspection Procedure

  1. INSPECT FUSE (SECURITY) 
    1. Remove the SECURITY fuse from the main body ECU.
    2. Measure the resistance of the fuse.

    Standard resistance 

    RESISTANCE REFERENCE TABLE

    Tester Connection Condition Specified Condition
    SECURITY fuse Always Below 1 Ω

    NG: REPLACE FUSE 

    OK: Go to Next Step 

  2. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - BATTERY AND BODY GROUND) 
    1. Disconnect the L15 ECU connector.
      Fig 1: Identifying L15 ECU Connector Terminal
      G04951359Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

    Standard resistance 

    RESISTANCE REFERENCE TABLE

    Tester Connection Condition Specified Condition
    L15-17 (E) - Body ground Always Below 1 Ω

    Standard voltage 

    VOLTAGE REFERENCE TABLE

    Tester Connection Condition Specified Condition
    L15-1 (+B1) - Body ground Always 11 to 14 V

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE  (See PROBLEM SYMPTOMS TABLE  )

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