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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (2GR-FKS) - Diagnostic Codes (1 Of 6) >> SFI System >> DTC P0087-00: Fuel Rail / System Pressure - Too Low [12/2019 - 10/2022] >> Procedure

DTC P0087-00: Fuel Rail / System Pressure - Too Low [12/2019 - 10/2022]: Procedure

  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: 

    GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 09/2020]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2020 - 10/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2021 - 10/2022] 

    Result: 

    See step  3

  3. CONFIRM IF VEHICLE HAS RUN OUT OF FUEL IN PAST 
    1. Has the vehicle run out of fuel in the past?

      Result

      Proceed to
      YES
      NO

    Result: 

    YES 

    DTC CAUSED BY RUNNING OUT OF FUEL 

    Result: 

    NO 

    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 [12/2019 - 09/2020] , or refer to FREEZE FRAME DATA [09/2020 - 10/2022]

      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: 

    GO TO FUEL PUMP CONTROL CIRCUIT. Refer to  Fuel Pump Control Circuit [12/2019 - 10/2022] 

    Result: 

    See step  5

  5. CHECK MISFIRE COUNT OF DIRECT INJECTION 
    1. 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
    2. 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
      Misfire Count Cylinder #5
      Misfire Count Cylinder #6

      Result

      Injection Mode Misfire Count Proceed to
      Direct No misfire counts, or misfire counts occur randomly in all cylinders A
      Misfire counts occur in a particular cylinder B

      HINT: 

      Perform "Inspection After Repair" after replacing the fuel injector assembly (for direct injection).

      Refer to INITIALIZATION [12/2019 - 10/2022]

    Result: 

    REPLACE FUEL INJECTOR ASSEMBLY (FOR DIRECT INJECTION). Refer to  REMOVAL [12/2019 - 10/2022] 

    Result: 

    See step  6

  6. CHECK FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE) 
    1. Start the engine.
    2. Check that the fuel pressure fluctuates when the engine condition changes from idling to racing.

      Powertrain > Engine > Data List 

      Tester Display
      Fuel Pressure (High)

      Result

      Result Proceed to
      Fuel pressure does not rise A
      Fuel pressure does not fluctuate B
      Fuel pressure fluctuates C

      HINT: 

      Perform "Inspection After Repair" after replacing the fuel pressure sensor (for high pressure side).

      Refer to INITIALIZATION [12/2019 - 10/2022]

    Result: 

    REPLACE FUEL DELIVERY PIPE WITH SENSOR ASSEMBLY LH. Refer to  REMOVAL [12/2019 - 10/2022] 

    Result: 

    See step  10

    Result: 

    See step  7

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

    Refer to PROCEDURE - Step 1

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    GO TO FUEL PUMP CONTROL CIRCUIT. Refer to  Fuel Pump Control Circuit [12/2019 - 10/2022] 

    Result: 

    OK 

    See step  8

  8. CHECK FUEL PRESSURE (FOR LOW PRESSURE SIDE) 

    Refer to PROCEDURE - Step 2

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE FUEL DELIVERY PIPE WITH SENSOR ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022] 

    Result: 

    OK 

    See step  9

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

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

      Tester Display
      Fuel Remaining Volume

      Standard

      Freeze Frame Data Item Specified Condition
      Fuel Remaining Volume 16% or more

      HINT: 

      • DTC P0087-00 may be stored if the vehicle temporarily ran out of fuel when the amount of fuel was low.
      • If Freeze Frame Data item "Fuel Remaining Volume" 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
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2019 - 10/2022] 

    Result: 

    NG 

    See step  11

  10. REPLACE FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY (FOR HIGH PRESSURE SIDE) 

    Refer to REMOVAL [12/2019 - 10/2022]

    HINT: 

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

    Refer to INITIALIZATION [12/2019 - 10/2022]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  11

  11. 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  12

  12. 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: 

    END 

    Result: 

    REPLACE ECM. Refer to  REMOVAL [12/2019 - 09/2020]  , or refer to  REMOVAL [09/2020 - 10/2022]