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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 (IGN) 
    1. Remove the IGN fuse from the cowl side junction block RH.
    2. Measure the resistance of the fuse.

      Standard resistance: Below 1 Ω 

    NG: REPLACE FUSE 

    OK: GO TO NEXT STEP 

  2. INSPECT BATTERY 
    1. Check the battery voltage.

      Standard voltage: 11 to 14 V 

      Result 

      RESULT REFERENCE

      Result Proceed to
      Battery voltage is OK (when using intelligent tester) A
      Battery voltage is OK (when not using intelligent tester) B
      Battery voltage is abnormal C

    B: Go to step   4 

    C: RECHARGE OR REPLACE BATTERY 

    A: GO TO NEXT STEP 

  3. DATA LIST (IG VOLTAGE) 
    1. Check the DATA LIST for proper function of the IG voltage.

      Skid control ECU assembly 

      DATA LIST

      Item Measurement Item / Range (Display) Normal Condition Diagnostic Note
      IG VOLTAGE ECU IG power voltage / UNDER or NORMAL or OVER - -

      OK: Display is NORMAL 

    OK: REPLACE SKID CONTROL ECU ASSEMBLY 

    NG: GO TO NEXT STEP 

  4. CHECK WIRE HARNESS (SKID CONTROL ECU ASSEMBLY - BATTERY AND BODY GROUND) 
    1. Measure the voltage of the wire harness side connectors.

      Standard voltage 

      Fig 1: Identifying Wire Harness Side Connectors Terminals
      G04440351Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      A42-6 (IG1) - A42-17 (GND4) Ignition switch ON 10 to 14 V
      A42-6 (IG1) - A42-8 (GND3) Ignition switch ON 10 to 14 V
      A42-6 (IG1) - A41-6 (GND2) Ignition switch ON 10 to 14 V
      A42-6 (IG1) - A41-31 (GND1) Ignition switch ON 10 to 14 V
      A42-6 (IG1) - Body ground Ignition switch ON 10 to 14 V
    2. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      A42-17 (GND4) - Body ground Always Below 1 Ω
      A42-8 (GND3) - Body ground Always Below 1 Ω
      A41-6 (GND2) - Body ground Always Below 1 Ω
      A41-31 (GND1) - Body ground Always Below 1 Ω

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: REPLACE SKID CONTROL ECU ASSEMBLY 

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