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Home >> Toyota >> 2008 >> RAV4 Base, 2.4 D, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control System (2AZ-FE) >> SFI System >> MIL Circuit >> Inspection Procedure

Inspection Procedure

  1. CHECK THAT MIL IS ILLUMINATED 
    1. Perform troubleshooting in accordance with the table below.
      TROUBLESHOOTING REFERENCE

      Conditions Proceed To
      MIL remains ON A
      MIL does not illuminate B

    B:  Go to step  5

    A: Go to next step 

  2. CHECK WHETHER MIL TURNS OFF 
    1. Connect Techstream to the DLC3.
    2. Turn the ignition switch ON and turn the tester ON.
    3. Select the following menu items: Powertrain / Engine and ECT / Trouble Code.
    4. Check if any DTCs have been stored. Note down any DTCs.
    5. Clear DTCs (see DTC CHECK / CLEAR  ).
    6. Check if the MIL goes off.

      Standard: 

      MIL should go off. 

    OK: REPAIR CIRCUITS INDICATED BY OUTPUT DTCS 

    NG: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS) 
    1. Disconnect the A9 ECM connector.
      Fig 1: Identifying ECM Connector Terminals
      G05183792Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch ON.
    3. Check that the MIL is not illuminated.

      OK: 

      MIL is not illuminated. 

    4. Reconnect the ECM connector.

    OK: REPLACE ECM 

    NG: Go to next step 

  4. CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM) 
    1. Disconnect the A9 ECM connector.
      2. Fig 2: Identifying Combination Meter And ECM Connector Terminals
      G05183793Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the E19 combination meter connector.
    3. Measure the resistance.

      Standard resistance (Check for short) 

      RESISTANCE SPECIFICATION

      Tester Connections Specified Conditions
      A9-24 (W) or E19-8 (EFI) - Body ground 10 kΩ or higher
    4. Reconnect the ECM connector.
    5. Reconnect the combination meter connector.

    OK: REPAIR OR REPLACE COMBINATION METER ASSEMBLY 

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

  5. CHECK THAT MIL IS ILLUMINATED 
    1. Check if the MIL is illuminated when the ignition switch is turned ON.

      OK: 

      MIL should be illuminated. 

    OK: SYSTEM OK 

    NG: Go to next step 

  6. CHECK THAT ENGINE STARTS 
    1. Turn the ignition switch ON.
    2. Start the engine.
      RESULT REFERENCE

      Result Proceed To
      Engine starts A
      Engine does not start* B
      HINT:
      *: Techstream cannot communicate with the ECM.

    B:  GO TO VC OUTPUT CIRCUIT 

    A: Go to next step 

  7. INSPECT COMBINATION METER ASSEMBLY (MIL CIRCUIT) 
    1. Check the MIL circuit (see INITIALIZATION ).

    NG: REPAIR OR REPLACE COMBINATION METER ASSEMBLY 

    OK: CHECK AND REPLACE HARNESS OR CONNECTOR (COMBINATION METER - ECM) 

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