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Home >> Toyota >> 2019 >> Highlander LE Plus, FWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> SFI System [2GR-FKS] - Diagnostic Codes - (Except Hybrid) (2 Of 4) >> SFI System >> DTC P0088-00: Fuel Rail / System Pressure - Too High [11/2016 - ] >> Procedure

DTC P0088-00: Fuel Rail / System Pressure - Too High [11/2016 - ]: Procedure

  1. CHECK OTHER DTCS OUTPUT (IN ADDITION TO DTC P0088-00) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON and turn the Techstream on.
    3. Enter the following menus: Powertrain / Engine / Trouble Codes.
    4. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result Proceed to
      DTC P0088-00 is output A
      DTC P0088-00 and other DTCs are output B

      HINT: 

      If any DTCs other than P0088-00 are output, troubleshoot those DTCs first.

    Result: 

    GO TO DTC CHART. 

    Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2016 - 10/2017] 

    Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2017 - ] 

    Result: 

    See step  2

  2. CHECK FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE) 
    1. Connect the Techstream to the DLC3.
    2. Start the engine and turn the Techstream on.
    3. Enter the following menus: Powertrain / Engine / Data List / Fuel Pressure (High).

      Powertrain > Engine > Data List 

      Tester Display
      Fuel Pressure (High)
    4. According to the display on the Techstream, read the Data List while racing the engine.

      OK

      Fuel pressure fluctuates.

      Proceed to
      OK
      NG

      HINT: 

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

      Refer to INITIALIZATION [11/2016 - ]

    Result: 

    NG 

    REPLACE FUEL DELIVERY PIPE WITH SENSOR ASSEMBLY LH (FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE)). 

    Refer to  REMOVAL [11/2016 - ] 

    Result: 

    OK 

    See step  3

  3. REPLACE FUEL PUMP ASSEMBLY (FOR HIGH PRESSURE SIDE) 
    1. Replace the fuel pump assembly (for high pressure side).

      Refer to REMOVAL [11/2016 - ]

      HINT: 

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

      Refer to INITIALIZATION [11/2016 - ]

    Result: 

    NEXT 

    See step  4

  4. CHECK IF DTC OUTPUT RECURS (SEE IF DTC P0088-00 IS OUTPUT AGAIN) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

    5. Turn the ignition switch off and wait for at least 30 seconds.
    6. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    7. Enter the following menus: Powertrain / Engine / Trouble Codes.
    8. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result Proceed to
      DTCs are not output A
      DTC P0088-00 is output B

    Result: 

    END 

    Result: 

    REPLACE ECM. 

    Refer to  REMOVAL [11/2016 - ]