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Home >> Toyota >> 2020 >> Corolla L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 98 (Engine Control System (2ZR-FXE) - Diagnostic Codes (12 Of 15)) >> SFI System >> DTC P10AA-00: Clogged EGR Port Imbalance Bank1; DTC P219A-00: Bank 1 Air-Fuel Ratio Imbalance; DTC P219C-00: Cylinder 1 Air-Fuel Ratio Imbalance; DTC P219D-00: Cylinder 2 Air-Fuel Ratio Imbalance; DTC P219E-00: Cylinder 3 Air-Fuel Ratio Imbalance; DTC P219F-00: Cylinder 4 Air-Fuel Ratio Imbalance [01/2019 - 04/2020] >> Procedure

DTC P10AA-00: Clogged EGR Port Imbalance Bank1; DTC P219A-00: Bank 1 Air-Fuel Ratio Imbalance; DTC P219C-00: Cylinder 1 Air-Fuel Ratio Imbalance; DTC P219D-00: Cylinder 2 Air-Fuel Ratio Imbalance; DTC P219E-00: Cylinder 3 Air-Fuel Ratio Imbalance; DTC P219F-00: Cylinder 4 Air-Fuel Ratio Imbalance [01/2019 - 04/2020]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK ANY OTHER DTCS OUTPUT 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Trouble Codes.
    5. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTC P10AA-00, P219A-00, P219C-00, P219D-00, P219E-00 and/or P219F-00 is output A
      DTC P10AA-00, P219A-00, P219C-00, P219D-00, P219E-00 and/or P219F-00 and other DTCs are output B

      HINT: 

      If any DTCs other than DTC P10AA-00, P219A-00, P219C-00, P219D-00, P219E-00 and/or P219F-00 are output, troubleshoot those DTCs first.

    Result: 

    B 

    GO TO DTC CHART 

    Refer to DIAGNOSTIC TROUBLE CODE CHART [01/2019 - 04/2020]

    Result: 

    A 

    See step  2

  2. READ VALUE USING TECHSTREAM (FREEZE FRAME DATA) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.

      Refer to FREEZE FRAME DATA [01/2019 - 09/2022]

      Freeze Frame Data Items for DTC P10AA-00, P219A-00, P219C-00, P219D-00, P219E-00 and/or P219F-00: 

      • Vehicle Speed
      • Engine Speed
      • Calculate Load
      • Short FT B1S1
      • Long FT B1S1
      • Misfire Count Cylinder #1 to #4

      HINT: 

      When the sum of Short FT B1S1 and Long FT B1S1 is positive, the engine is running lean, and when the sum is negative, the engine is running rich.

      Air Fuel Ratio Sensor Monitoring Method (P219A-00) Crankshaft Position Sensor Monitoring Method (P219C-00, P219D-00, P219E-00 and P219F-00) EGR Port Clogged Monitoring Method (P10AA-00) Note
      - - DTC is output Detected by EGR Port Clogged Monitoring Method.*1
      DTC is output DTC is output (Only one DTC relating to a single cylinder is output) DTC is not output Malfunctioning of cylinders detected by Crankshaft Position Sensor Monitoring Method is primarily suspected
      DTC is output DTCs are output (Multiple DTCs relating to multiple cylinders are output) DTC is not output Malfunctioning of cylinders except ones detected by Crankshaft Position Sensor Monitoring Method is primarily suspected.*2
      DTC is not output DTCs are output DTC is not output Malfunctioning of cylinders detected by Crankshaft Position Sensor Monitoring Method is primarily suspected.
      DTC is output DTCs are not output DTC is not output Malfunctioning of the bank detected by Air Fuel Ratio Sensor Monitoring Method is primarily suspected.

      *1: Even if other DTCs are output, it is likely that an EGR port is clogged.

      *2: When any air fuel ratio imbalance is detected, the ECM will perform air fuel ratio feedback control to make the air fuel ratio close to the stoichiometric air fuel ratio. This may result in an air fuel ratio imbalance of normal cylinders and DTCs may be stored.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. READ OUTPUT DTC 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Put the engine in Inspection Mode (Maintenance Mode).

      Refer to INSPECTION MODE PROCEDURE [06/2018 - ]

      Powertrain > Hybrid Control > Utility 

      Tester Display
      Inspection Mode
    5. Drive the vehicle in accordance with Confirmation Driving Pattern.

      HINT: 

      • If any misfire count (Misfire Count Cylinder #1 to #4) increases while idling or driving the vehicle, proceed to step 7.
      • Perform inspections while focusing on the cylinder whose misfire count has increased.
      • Perform the confirmation driving patterns for both DTC P10AA-00 and P219A-00.
    6. Enter the following menus: Powertrain / Engine / Trouble Codes.
    7. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTC P10AA-00 is output A
      DTC P219A-00 is output B
      DTC P219A-00 and P219C-00, P219D-00, P219E-00 or P219F-00 are output C
      DTC P219C-00, P219D-00, P219E-00 and/or P219F-00 is output

    Result: 

    B 

    See step  5

    Result: 

    C 

    See step  7

    Result: 

    A 

    See step  4

  4. REPLACE INTAKE MANIFOLD 
    1. Replace the intake manifold.

      Refer to REMOVAL [01/2019 - 09/2022]

      HINT: 

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

      Refer to INITIALIZATION [01/2019 - 09/2022]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  14

  5. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Put the engine in Inspection Mode (Maintenance Mode).

      Refer to INSPECTION MODE PROCEDURE [06/2018 - ]

      Powertrain > Hybrid Control > Utility 

      Tester Display
      Inspection Mode
    5. Start the engine and warm it up.

      HINT: 

      The A/C switch and all accessories should be off and park (P) or neutral (N) should be selected.

    6. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume / Data List / Misfire Count Cylinder #1 to #4.

      HINT: 

      When the "Control the Injection Volume" Active Test is selected (injection volume is 0%), if a misfire count increases, proceed to step 7 (Check Intake System).

      Powertrain > Engine > Active Test 

      Active Test Display
      Control the Injection Volume
      Data List Display
      Misfire Count Cylinder #1
      Misfire Count Cylinder #2
      Misfire Count Cylinder #3
      Misfire Count Cylinder #4
    7. According to the display on the Techstream, perform the Active Test with the engine idling.
    8. Check the misfire counts (Misfire Count Cylinder #1 to #4) while decreasing the injection volume in 5% increments.

      Result

      The cylinder whose misfire count has not increased can be assumed to be running rich. Therefore, perform inspections while focusing on that cylinder.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  6

  6. CHECK FOR EXHAUST GAS LEAK 
    1. Check for exhaust gas leaks.

      OK

      No gas leaks in exhaust system.

      HINT: 

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

      Refer to INITIALIZATION [01/2019 - 09/2022]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE EXHAUST SYSTEM 

    Result: 

    OK 

    See step  7

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

      Refer to ON-VEHICLE INSPECTION [01/2019 - 09/2022]

      OK

      No leaks from the intake system.

      HINT: 

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

      Refer to INITIALIZATION [01/2019 - 09/2022]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE INTAKE SYSTEM 

    Result: 

    OK 

    See step  8

  8. INSPECT SPARK PLUG 
    1. Inspect the spark plug of the cylinder causing the imbalance.

      Refer to PROCEDURE - Step 3

      HINT: 

      Perform "Inspection After Repair" after replacing the spark plug.

      Refer to INITIALIZATION [01/2019 - 09/2022]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SPARK PLUG 

    Refer to REMOVAL [01/2019 - 09/2022]

    Result: 

    OK 

    See step  9

  9. CHECK FOR SPARK (SPARK TEST) 
    1. Perform a spark test.

      Refer to PROCEDURE - Step 1

      HINT: 

      • If the result of the spark test is normal, proceed to the next step.
      • Perform "Inspection After Repair" after repairing or replacing the ignition system.

        Refer to INITIALIZATION [01/2019 - 09/2022]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  10

  10. CHECK CYLINDER COMPRESSION PRESSURE 
    1. Measure the cylinder compression pressure of the misfiring cylinder.

      Refer to PROCEDURE - Step 9

      HINT: 

      Perform "Inspection After Repair" after repairing or replacing the engine assembly.

      Refer to INITIALIZATION [01/2019 - 09/2022]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION 

    Result: 

    OK 

    See step  11

  11. CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY) 
    GTY900931Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Front view of wire harness connector
    (to Fuel Injector Assembly)
    1. Disconnect the fuel injector assembly connector.
    2. Turn the power switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      C33-1 - Body ground Power switch on (IG) 11 to 14 V
      C34-1 - Body ground Power switch on (IG) 11 to 14 V
      C35-1 - Body ground Power switch on (IG) 11 to 14 V
      C36-1 - Body ground Power switch on (IG) 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CHECK FUEL INJECTOR CIRCUIT 

    Refer to Fuel Injector Circuit [01/2019 - 09/2022]

    Result: 

    OK 

    See step  12

  12. CHECK FUEL INJECTOR ASSEMBLY OF CYLINDER CAUSING IMBALANCE 
    1. Check the fuel injector assembly injection (whether fuel volume is high or low, and whether injection pattern is poor).

      Refer to INSPECTION [01/2019 - ]

      HINT: 

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

      Refer to INITIALIZATION [01/2019 - 09/2022]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FUEL INJECTOR ASSEMBLY 

    Refer to REMOVAL [01/2019 - 04/2020]

    Result: 

    OK 

    See step  13

  13. CHECK FOR CAUSE OF FAILURE 
    1. If the cause of the problem has not been found even after performing the troubleshooting procedure, perform the inspection below.
    2. Check the intake valve for deposits.

      HINT: 

      As the DTC may have been stored due to deposits an the intake valve, remove the cylinder head and check the intake valves.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  14

  14. CLEAR DTC 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

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

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  15

  15. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED 
    1. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

      HINT: 

      Perform the appropriate confirmation driving patterns for the DTCs that were output.

    2. Enter the following menus: Powertrain / Engine / Trouble Codes.
    3. Check for DTCs.

      Powertrain > Engine > Trouble Codes 

      OK

      DTCs are not output.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    END 

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