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Home >> Lexus >> 2008 >> LX 570 >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Theft Deterrent / Keyless Entry >> Engine Immobilizer System >> ID Code Box Power Source Circuit >> Inspection Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Inspection Procedure

  1. INSPECT FUSE (IMB) 
    1. Remove the IMB fuse from the engine room relay block.
    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
      IMB 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 E28 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
      E28-8 (GND) - Body ground Always Below 1 Ω

      Standard Voltage 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Condition Specified Condition
      E28-1 (+B) - Body ground Always 11 to 14 V
      Fig 1: Identifying E28 Box Connector
      G05631048Courtesy 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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