LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2011 >> Highlander Hybrid Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 63 (Engine Control System (2GR-FE) (Diagnostic Codes (P1604 - P2610) & Circuit Tests))) >> SFI System >> Fuel Pump Control Circuit >> Procedure

Fuel Pump Control Circuit: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE C/OPN RELAY) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch on (IG), and turn the tester on.
    3. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.
    4. Check the relay operation while operating it using the tester.

      Standard

      Operating noise can be heard from the relay.

    NG → See step   13 

    OK: Go to next step 

  2. INSPECT TERMINAL VOLTAGE (FUEL PMP RELAY TERMINAL) 
    1. Remove the FUEL PMP relay from the engine room relay block.
      Fig 1: Identifying FUEL PMP Relay In Engine Room Relay Block
      GTY185318Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Switch Condition Specified Condition
      FUEL PMP relay terminal 2 - Body ground Ignition switch on (IG) 9 to 14 V
      FUEL PMP relay terminal 3 - Body ground Ignition switch on (IG) 9 to 14 V
      TEXT IN ILLUSTRATION

      *1 Engine Room Relay Block
      *2 FUEL PMP
    4. Reinstall the FUEL PMP relay.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (FUEL PMP RELAY - C/OPN RELAY) 

    OK: Go to next step 

  3. INSPECT RELAY (FUEL PMP RELAY) 
    1. Remove the FUEL PMP relay from the engine room relay block.
      Fig 2: Identifying Fuel Pump Relay Terminals
      GTY147023Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      3 - 4 When no battery voltage is applied terminals 1 and 2 Below 1 Ω
      3 - 5 When no battery voltage is applied terminals 1 and 2 10 kΩ or higher
      3 - 4 When battery voltage is applied terminals 1 and 2 10 kΩ or higher
      3 - 5 When battery voltage is applied terminals 1 and 2 Below 1 Ω
    3. Reinstall the FUEL PMP relay.

    NG → REPLACE RELAY (FUEL PMP RELAY) 

    OK: Go to next step 

  4. INSPECT FUEL PUMP RESISTOR 
    1. Disconnect the fuel pump resistor connector.
      Fig 3: Identifying Fuel Pump Resistor Connector
      GTY296702Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      1 - 2 20°C (68°F) 0.30 to 0.34 Ω
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Fuel Pump Resistor)
    3. Reconnect the fuel pump resistor connector.

    NG → See step   14 

    OK: Go to next step 

  5. CHECK HARNESS AND CONNECTOR (FUEL PUMP - FUEL PMP RELAY) 
    1. Check the wire harness between the FUEL PMP relay and fuel pump.
      1. Remove the fuel pump relay from the engine room relay block.
      2. Disconnect the fuel pump connector.
      3. Measure the resistance according to the value(s) in the table below.

        Standard resistance

        Tester Connection Condition Specified Condition
        FUEL PMP relay terminal 4 - O9-4 Always Below 1 Ω
        FUEL PMP relay terminal 4 or O9-4 - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  6. CHECK HARNESS AND CONNECTOR (FUEL PUMP RELAY - FUEL PUMP RESISTOR) 
    1. Disconnect the fuel pump resistor connector.
    2. Remove the fuel pump relay from the engine room relay block.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open)

      Tester Connection Condition Specified Condition
      FUEL PMP relay terminal (5) - A35-1 Always Below 1 Ω

      Standard resistance (Check for short)

      Tester Connection Condition Specified Condition
      FUEL PMP relay terminal (5) or A35-1 - Body ground Always 10 kΩ or higher
    4. Reconnect the fuel pump resistor connector.
    5. Reinstall the fuel pump relay.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  7. CHECK HARNESS AND CONNECTOR (FUEL PUMP RESISTOR - FUEL PUMP) 
    1. Disconnect the fuel pump resistor connector.
    2. Disconnect the fuel pump connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open)

      Tester Connection Condition Specified Condition
      A35-2 - O9-4 Always Below 1 Ω

      Standard resistance (Check for short)

      Tester Connection Condition Specified Condition
      A35-2 or O9-4 - Body ground Always 10 kΩ or higher
    4. Reconnect the fuel pump resistor connector.
    5. Reconnect the fuel pump connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  8. INSPECT FUEL PUMP 
    1. Inspect the fuel pump.
      Fig 4: Identifying Fuel Pump
      GTY300139Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.

        Standard resistance

        Tester Connections Condition Specified Condition
        4 - 5 20°C (68°F) 0.2 to 0.3 Ω
        TEXT IN ILLUSTRATION

        *a Component without harness connected
        (Fuel Pump)
      2. Apply battery voltage to both terminals 4(+) and 5(-). Check that the pump operates.
        NOTE:
        • These tests must be done quickly (within 10 seconds) to prevent the coil from burning out.
        • Keep the fuel pump as far away from the battery as possible.
        • Always turn ON and OFF the voltage on the battery side, not on the fuel pump side.

    NG → See step   15 

    OK → CHECK AND REPLACE FUEL FILTER 

  9. CHECK ECM POWER SOURCE CIRCUIT 

    HINT: 

    Refer to ECM Power Source Circuit .

    NG → REPAIR OR REPLACE ECM POWER SOURCE CIRCUIT 

    OK: Go to next step 

  10. INSPECT ENGINE ROOM JUNCTION BLOCK ASSEMBLY (C/OPN RELAY) 
    1. Inspect the C/OPN relay, refer to INSPECTION .

    NG → See step   16 

    OK: Go to next step 

  11. INSPECT ECM (FC VOLTAGE) 
    1. Turn the ignition switch on (IG).
      Fig 5: Identifying Ignition Switch On (IG)
      GTY296158Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Switch Condition Specified Condition
      D61-3 (FC) - B49-12 (E1) Ignition switch on (IG) 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (ECM)

    NG → See step   12 

    OK → See step   17 

  12. CHECK HARNESS AND CONNECTOR (ECM - C/OPN RELAY) 
    1. Disconnect the ECM connector.
    2. Remove the engine room junction block.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open)

      Tester Connection Condition Specified Condition
      D61-3 (FC) - 2D-12 (C/OPN relay terminal) Always Below 1 Ω

      Standard resistance (Check for short)

      Tester Connection Condition Specified Condition
      D61-3 (FC) or 2D-12 (C/OPN relay terminal) - Body ground Always 10 kΩ or higher
    4. Reconnect the ECM connector.
    5. Reinstall the engine room junction block.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - C/OPN RELAY) 

    OK → See step   18 

  13. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE 
  14. REPLACE FUEL PUMP RESISTOR. Refer to  COMPONENTS 
  15. REPLACE FUEL PUMP ASSEMBLY. Refer to  COMPONENTS 
  16. REPLACE CIRCUIT OPENING RELAY. Refer to  COMPONENTS 
  17. REPLACE ECM. Refer to  COMPONENTS 
  18. REPLACE ENGINE ROOM JUNCTION BLOCK ASSEMBLY. Refer to  COMPONENTS 
scientia non olet · About LEMON Manuals