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Home >> Toyota >> 2024 >> Corolla LE >> Repair and Diagnosis >> External Pages >> Different car >> Section 374 (Engine Control System (2ZR-FAE) - Diagnostic Codes (5 Of 8)) >> SFI System >> DTC P0505: Idle Control System [03/2019 - 11/2022] >> Procedure

DTC P0505: Idle Control System [03/2019 - 11/2022]: Procedure

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  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0505) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
    5. Read the DTCs.

      Powertrain > Engine and ECT > Trouble Codes 

      Result

      Result Proceed to
      DTC P0505 is output A
      DTC P0505 and other DTCs are output B

      HINT: 

      If any DTCs other than P0505 are output, troubleshoot those DTCs first.

    Result: 

    B 

    GO TO DTC CHART 

    Refer to DIAGNOSTIC TROUBLE CODE CHART [03/2019 - 04/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [04/2020 - 09/2022] , or refer to DIAGNOSTIC TROUBLE CODE CHART [09/2022 - 11/2022]

    Result: 

    A 

    See step  2

  2. CHECK PCV HOSE CONNECTIONS 
    1. Check the PCV hose connections.

      Refer to COMPONENTS [01/2019 - 11/2022]

      OK

      PCV valve and hose are connected correctly and are not damaged.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE PCV HOSE 

    Result: 

    OK 

    See step  3

  3. CHECK INTAKE SYSTEM 
    1. Check the intake system for vacuum leaks.

      Refer to ON-VEHICLE INSPECTION [01/2019 - 11/2022]

      OK

      No leaks from the intake system.

      HINT: 

      Perform "Inspection After Repair" after repairing or replacing the intake system.

      Refer to INITIALIZATION [01/2019 - 11/2022]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE INTAKE SYSTEM 

    Result: 

    OK 

    See step  4

  4. INSPECT THROTTLE BODY ASSEMBLY (THROTTLE VALVE) 
    1. Check the throttle body assembly condition.

      OK

      Throttle valve is not contaminated with foreign matter and moves smoothly.

      HINT: 

      Perform "Inspection After Repair" after replacing the throttle body assembly.

      Refer to INITIALIZATION [01/2019 - 11/2022]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE THROTTLE BODY ASSEMBLY 

    Refer to REMOVAL [01/2019 - 11/2022]

    Result: 

    OK 

    See step  5

  5. CLEAR DTC 
    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 and ECT > Clear DTCs 

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

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  6

  6. CONFIRM WHETHER DTC OUTPUT RECURS (DTC P0505) 
    1. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
    2. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
    3. Read the pending DTCs.

      Powertrain > Engine and ECT > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTC P0505 is output B

    Result: 

    A 

    REPLACE ECM 

    Refer to REMOVAL [03/2019 - 09/2022] , or refer to REMOVAL [09/2022 - 11/2022]

    Result: 

    B 

    END 

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