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

Inspection Procedure

  1. CHECK BASIC FUNCTION (PUSH-BUTTON START FUNCTION) 
    1. Check the basic function of the push-button start function.

    OK: Basic function operates normally. 

    NG: GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Starting)  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    OK: Go to Next Step 

  2. INSPECT FUSE (P IG2) 
    1. Remove the P IG2 fuse from the passenger side junction block.
    2. Measure the resistance of the fuse.

    Standard resistance 

    RESISTANCE REFERENCE TABLE

    Tester connection Condition Specified Condition
    P IG2 fuse Always Below 1 Ω

    NG: REPLACE FUSE 

    OK: Go to Next Step 

  3. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - BATTERY) 
    1. Disconnect the L15 ECU connector.
      Fig 1: Identifying L15 ECU Connector Terminal
      G04951361Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance and voltage 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 Switch Condition Specified Condition
    L15-18 (IG) - Body ground Engine switch on (IG) 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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