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Home >> Lexus >> 2013 >> IS F >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Engine Immobilizer System (Diagnostic Codes & Circuit Tests) >> Engine Immobilizer System >> Circuit Tests >> ID Code Box Power Source Circuit >> Procedure

ID Code Box Power Source Circuit: Procedure

  1. CHECK HARNESS AND CONNECTOR (ID CODE BOX - BATTERY) 
    1. Disconnect the ID code box (immobilizer code ECU) connector.
      GTY126051Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      J69-1 (+B) - Body ground Always 11 to 14 V

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR, OR REPLACE FUSE 

    OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (ID CODE BOX - BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY119980Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      J69-8 (GND) - Body ground Always Below 1 Ω

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   3 

  3. PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [08/2012 - ]