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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 71 (Engine Control System (A25A-FXS) - Diagnostic Codes (P0030-P008B)) >> SFI System >> DTC P0087-00: Fuel Rail / System Pressure - Too Low [11/2023 - ] >> Procedure

DTC P0087-00: Fuel Rail / System Pressure - Too Low [11/2023 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FUEL LEAK 
    1. Check around and beneath the vehicle for fuel leaks, fumes, etc.

      OK

      No fuel leaks present.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE FUEL LEAK POINT 

    Result: 

    OK 

    See step  2

  2. CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0087-00) 
    1. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTC P0087-00 is output A
      DTC P0087-00 and other DTCs are output B

      HINT: 

      If any DTCs other than P0087-00 are output, troubleshoot those DTCs first.

    Result: 

    B 

    GO TO DTC CHART  . Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2023 - 11/2024] , or refer to DIAGNOSTIC TROUBLE CODE CHART [11/2024 - ]

    Result: 

    A 

    See step  3

  3. CHECK SHORTAGE OF FUEL 
    1. In accordance with the display on the GTS, check the value of Freeze Frame Data item "Fuel Level" stored when the DTC was detected.

      Powertrain > Engine > DTC (P0087-00) > Freeze Frame Data 

      Tester Display
      Fuel Level

      Standard

      Freeze Frame Data Item Standard
      Fuel Level Not Emp

      HINT: 

      • DTC P0087-00 may be stored if the engine stopped after running out of fuel or the vehicle temporarily ran out of fuel when the amount of fuel was low.
      • If Freeze Frame Data item "Fuel Level" is not displayed, based on the interview with the customer, check if the low fuel level warning was not displayed when the MIL illuminated.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. READ FREEZE FRAME DATA (TARGET FUEL PRESSURE (LOW) / TARGET FUEL PRESSURE 2 AND LOW FUEL PRESSURE SENSOR) 
    1. Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.

      Refer to FREEZE FRAME DATA [11/2023 - 11/2024] , or refer to FREEZE FRAME DATA [11/2024 - ]

      HINT: 

      • Check the Freeze Frame Data sets recorded the moment the DTC was stored and after the DTC was stored.
      • Using the Freeze Frame Data, confirm the vehicle conditions when the DTC was stored, such as if the engine was idling with the shift state P, D or N or if the vehicle was being driven at a constant speed or accelerating.
      CONFIRMATION ITEM

      Target Fuel Pressure (Low) / Target Fuel Pressure 2 Low Fuel Pressure Sensor
    2. Compare the difference in pressure between "Target Fuel Pressure (Low) / Target Fuel Pressure 2 and Low Fuel Pressure Sensor".

      Result

      Result Proceed to
      Difference between Target Fuel Pressure (Low) / Target Fuel Pressure 2 and Low Fuel Pressure Sensor is within 200 kPa A
      Difference between Target Fuel Pressure (Low) / Target Fuel Pressure 2 and Low Fuel Pressure Sensor is more than 200 kPa B

    Result: 

    B 

    GO TO FUEL PUMP CONTROL CIRCUIT 

    Refer to Fuel Pump Control Circuit [10/2021 - 11/2024] , or refer to Fuel Pump Control Circuit [11/2024 - ]

    Result: 

    A 

    See step  5

  5. CHECK MISFIRE COUNT OF DIRECT INJECTION 
    1. Put the engine in Inspection Mode (Maintenance Mode).

      Powertrain > Hybrid Control > Utility 

      Tester Display
      Inspection Mode
    2. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

      Powertrain > Engine > Data List 

      Tester Display
      Coolant Temperature
    3. According to the display on the GTS, read the Data List with the Active Test "Control the Injection Mode" set to Direct.

      Powertrain > Engine > Active Test 

      Active Test Display
      Control the Injection Mode
      Data List Display
      Injection Mode
      Misfire Count Cylinder #1
      Misfire Count Cylinder #2
      Misfire Count Cylinder #3
      Misfire Count Cylinder #4

      Result

      Injection Mode Misfire Count Proceed to
      Direct There are no misfire counts A
      3 cylinders or more have misfire counts
      1 or 2 cylinders have misfire counts B

      HINT: 

      Perform "Inspection After Repair" after replacing the direct fuel injector assembly.

      Refer to INITIALIZATION [10/2021 - ]

    Result: 

    B 

    REPLACE DIRECT FUEL INJECTOR ASSEMBLY 

    Refer to REMOVAL [11/2023 - ]

    Result: 

    A 

    See step  6

  6. CHECK FUEL PUMP OPERATION (FOR LOW PRESSURE SIDE) 

    Refer to PROCEDURE - Step 1

    HINT: 

    Perform "Inspection After Repair" after replacing the fuel pump (for low pressure side).

    Refer to INITIALIZATION [10/2021 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    GO TO FUEL PUMP CONTROL CIRCUIT 

    Refer to Fuel Pump Control Circuit [10/2021 - 11/2024] , or refer to Fuel Pump Control Circuit [11/2024 - ]

    Result: 

    OK 

    See step  7

  7. CHECK FUEL PRESSURE (FOR LOW PRESSURE SIDE) 

    Refer to PROCEDURE - Step 2

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPAIR OR REPLACE FUEL SYSTEM 

    Result: 

    OK 

    See step  8

  8. READ VALUE USING GTS (FUEL PRESSURE (HIGH)) 
    1. Discharge the fuel pressure.

      HINT: 

      DTCs may be stored during this inspection. Check for DTCs and clear them using the GTS.

      1. Disconnect the fuel suction tube with pump and gauge assembly connector.
      2. Disconnect the fuel (engine room side) pump assembly (for high pressure side) connector.
      3. Put the engine in Inspection Mode (Maintenance Mode).

        Powertrain > Hybrid Control > Utility 

        Tester Display
        Inspection Mode
      4. Start the engine.
      5. After the engine has stopped on its own, turn the ignition switch off.

        HINT: 

        If the engine does not stop naturally, perform direct injection by racing the engine to reduce the fuel pressure [Fuel Pressure (High)] and stop the engine.

      6. Put the engine in Inspection Mode (Maintenance Mode).

        Powertrain > Hybrid Control > Utility 

        Tester Display
        Inspection Mode
      7. Crank the engine again and make sure that the engine does not start.
      8. Connect the fuel (engine room side) pump assembly (for high pressure side) connector.
      9. Connect the fuel suction tube with pump and gauge assembly connector.
    2. Turn the ignition switch to ON.
    3. According to the display on the GTS, read the Data List.

      Powertrain > Engine > Data List 

      Tester Display
      Fuel Pressure (High)

      HINT: 

      Use the snapshot function to record the value displayed or make a note of it.

    4. Put the engine in Inspection Mode (Maintenance Mode).

      Powertrain > Hybrid Control > Utility 

      Tester Display
      Inspection Mode
    5. Start the engine.
    6. Read the change in the Data List item "Fuel Pressure (High)" after discharging the fuel system pressure and after starting the engine.

      Powertrain > Engine > Data List 

      Tester Display
      Fuel Pressure (High)

      OK

      The value of the Data List item "Fuel Pressure (High)" changes.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE) 

    Refer to REMOVAL [11/2023 - ]

    Result: 

    OK 

    See step  9

  9. CLEAR DTC 
    1. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

    2. Turn the ignition switch off and wait for at least 30 seconds.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  10

  10. CHECK IF DTC OUTPUT RECURS (SEE IF DTC P0087-00 IS OUTPUT AGAIN) 
    1. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    2. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTC P0087-00 is output B

    Result: 

    A 

    CHECK FOR INTERMITTENT PROBLEMS 

    Refer to CHECK FOR INTERMITTENT PROBLEMS [12/2019 - ]

    HINT: 

    DTC P0087-00 may be stored if the engine stopped after running out of fuel or the vehicle temporarily ran out of fuel when the amount of fuel was low.

    Result: 

    B 

    REPLACE ECM 

    Refer to REMOVAL [11/2023 - ]

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