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Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (OPERATE C/OPN RELAY) 
    1. Connect the intelligent tester to the DLC3.
    2. Turn the ignition switch to the ON position and turn the tester on.
    3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II /ACTIVE TEST/ FUEL PUMP / SPD.
    4. Check whether the fuel pump operation sound occurs when performing the Active Test on the tester.

      OK: Fuel pump operating sound occurs. 

    NG: Go to step 2 

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

  2. CHECK ECM POWER SOURCE CIRCUIT 

    NG: REPAIR OR REPLACE ECM POWER SOURCE CIRCUIT 

    OK: Go to next step 

  3. INSPECT C/OPN RELAY 
    1. Remove the C/OPN relay from the engine room junction block.
    2. Measure the resistance of the C/OPN relay

      Standard resistance 

      RESISTANCE REFERENCE CHART

      Tester Connection Specified Condition
      3 - 5 10 kΩ or higher
      3 - 5 Below 1 Ω (when battery voltage is applied to terminals 1 and 2)
    3. Reinstall the C/OPN relay.
      Fig 1: Inspecting EFI Relay
      G05245246Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE C/OPN RELAY 

    OK: Go to next step 

  4. INSPECT ECM (FC VOLTAGE) 
    1. Disconnect the ECM connectors.
      Fig 2: Identifying ECM Connector
      G05128314Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value (s) in the table below.

      Standard voltage 

      VOLTAGE CHART

      Tester Connection Specified Condition
      E4-25 (FC) - E8-3 (E1) 9 to 14 V
    3. Reconnect the ECM connectors.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - BATTERY) 

    OK: Go to next step 

    OK: Go to next step 

  5. INSPECT FUEL PUMP 

    NG: REPLACE FUEL PUMP 

    OK: Go to next step 

  6. CHECK HARNESS AND CONNECTOR (C/OPN RELAY - FUEL PUMP - BODY GROUND) 
    1. Check the harness and the connectors between the C/ OPN relay and the fuel pump.
      1. Remove the C/OPN relay from the engine room junction block.
      2. Disconnect the fuel pump connector.
      3. Measure the resistance according to the value (s) in the table below.

        Standard resistance (Check for open) 

        RESISTANCE REFERENCE CHART

        Tester Connection Specified Condition
        3 (C/OPN relay) - F8-4 (Fuel pump) Below 1 Ω

        Standard resistance (Check for short) 

        RESISTANCE REFERENCE CHART

        Tester Connection Specified Condition
        3 (C/OPN relay) or F8-4 (Fuel pump) - Body ground 10 kΩ or higher
    2. Check the harness and the connectors between the fuel pump and body ground.
      1. Disconnect the fuel pump connector.
      2. Measure the resistance according to the value (s) in the table below.

        Standard resistance (Check for open) 

        RESISTANCE REFERENCE CHART

        Tester Connection Specified Condition
        F8-5 (Fuel pump) - Body ground Below 1 Ω
        Fig 3: Identifying Engine Room Junction Block And Fuel Pump
        G05128315Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Reconnect the fuel pump connector.
    4. Reinstall the C/OPN relay.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE ECM 

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