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Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR DTC 
    1. Using the intelligent tester (with CAN VIM), check for DTCs and confirm that there are no problems in the CAN communication system.

      OK : 

      CAN DTCs are not output. 

    NG: Go to  CAN COMMUNICATION SYSTEM 

    OK: GO TO NEXT STEP. 

  2. READ VALUE OF INTELLIGENT TESTER (IG POWER SUPPLY) 
    1. Connect the intelligent tester (with CAN VIM) to the DLC3.
    2. Turn the ignition switch ON and press the intelligent tester main switch ON.
    3. Select the item "IG SUPPLY" in the DATA LIST and read the value displayed on the intelligent tester.

      Main Body ECU 

      DATA LIST DETAIL

      Item Item Description: Range (Display) Inspection Condition Specified Condition
      IG SUPPLY ECU power source voltage:
      Min.: 0 V
      Max.: 20.1531 V      		 Ignition switch ON 10 to 14 V

    OK: Go to step   5 

    NG: GO TO NEXT STEP. 

  3. INSPECT FUSE (ECU-IG1) 
    1. Remove the ECU-IG1 fuse from the instrument panel junction block.
    2. Measure the resistance of the fuse.

      OK : 

      Below 1 Ω 

    NG: INSPECT SHORT CIRCUIT IN COMPONENTS AND WIRES CONNECTED TO FUSE 

    OK: GO TO NEXT STEP. 

  4. CHECK WIRE HARNESS (BATTERY - POWER STEERING ECU AND BODY GROUND) 
    1. Disconnect the A1 and E18 power steering ECU connector.
      2. Fig 1: Identifying Power Steering ECU A1 And E18 Harness Connector Terminals
      G04489753Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage of the wire harness side connectors.

      Standard voltage 

      TERMINALS VOLTAGE SPECIFICATION

      Tester Connection Condition Specified Condition
      E18-5 (IG) - A1-2 (PGND) Ignition switch ON 10 to 14 V

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: GO TO NEXT STEP. 

  5. PERFORM ACTIVE TEST BY INTELLIGENT TESTER 
    1. Connect the intelligent tester (with CAN VIM) to the DLC3.
    2. Turn the ignition switch ON and press the intelligent tester main switch ON.
    3. Operate the intelligent tester according to the steps on the display and select the ACTIVE TEST.

      Combination meter 

      ACTIVE TEST DETAIL

      Item Test Details Diagnostic Note
      EPS INDIC P/S indicator (ON/OFF) Confirm that the vehicle is stopped, engine idling

      OK : 

      Indicator comes on. 

    NG: REPLACE COMBINATION METER ASSEMBLY 

    OK: GO TO NEXT STEP. 

    REPLACE POWER STEERING ECU 

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