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Home › Lexus › 2009 › LS 460 AWD › Repair and Diagnosis › Body & Frame › Door Locks › Engine Immobilizer › Engine Immobilizer System › ID Code Box 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 according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      SECURITY fuse Always Below 1 Ω

      NG: REPLACE FUSE 

      OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (ID CODE BOX - BATTERY AND BODY GROUND) 
    1. Disconnect the L32 box connector.
    2. Measure the resistance and voltage according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      L32-8 (GND) - Body ground Always Below 1 Ω

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      L32-1 (+B) - Body ground Always 11 to 14 V
      Fig 1: Identifying L32 Box Connector Terminals
      G04944592Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      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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