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Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT FUSE (SECURITY, ECU-B2, BAT, ECU-IG1, AM1) 
    1. Remove the SECURITY and ECU-B2 fuses from the cowl side junction block RH.
    2. Remove the BAT fuse from the engine room junction block.
    3. Remove the ECU-IG1 and AM1 fuses from the cowl side junction block LH.
    4. Measure the resistance of the fuses.

      Standard resistance: Below 1 Ω 

    NG: REPLACE FUSE 

    OK: GO TO NEXT STEP 

  2. CHECK WIRE HARNESS (THEFT WARNING ECU ASSEMBLY - BATTERY AND BODY GROUND) 
    1. Disconnect the T5 ECU connector.
    2. Measure the resistance and voltage of the wire harness side connector.

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION TABLE

      Tester Connection Specified Condition
      T5-29 (E) - Body ground Below 1 Ω

      Standard voltage 

      TESTER CONNECTION AND SPECIFIED CONDITION TABLE

      Tester Connection Condition Specified Condition
      T5-2 (+B1) - Body ground Always 10 to 14 V
      T5-3 (+B2) - Body ground Always 10 to 14 V
      T5-10 (IG) - Body ground Ignition switch OFF Below 1 V
      Ignition switch ON 10 to 14 V

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE 

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