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Home >> Toyota >> 2015 >> Avalon Hybrid Limited >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> SFI System - Diagnostic Codes - (Hybrid) (1 Of 4) >> SFI System >> DTC P0300: Random / Multiple Cylinder Misfire Detected; DTC P0301: Cylinder 1 Misfire Detected; DTC P0302: Cylinder 2 Misfire Detected; DTC P0303: Cylinder 3 Misfire Detected; DTC P0304: Cylinder 4 Misfire Detected [10/2014 - ] >> Procedure

DTC P0300: Random / Multiple Cylinder Misfire Detected; DTC P0301: Cylinder 1 Misfire Detected; DTC P0302: Cylinder 2 Misfire Detected; DTC P0303: Cylinder 3 Misfire Detected; DTC P0304: Cylinder 4 Misfire Detected [10/2014 - ]: Procedure

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO MISFIRE DTCS) 
    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 and ECT / Trouble Codes.
    5. Read the DTCs.
      RESULT

      Result Proceed to
      DTC P0300, P0301, P0302, P0303 and/or P0304 are output A
      DTC P0300, P0301, P0302, P0303 and/or P0304 and other DTCs are output B

      HINT: 

      If any DTCs other than P0300, P0301, P0302, P0303 and/or P0304 are output, troubleshoot those DTCs first.

    Result: 

    B 

    GO TO DTC CHART 

    (Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2014 - 10/2015] or DIAGNOSTIC TROUBLE CODE CHART [10/2015 - 10/2016] or DIAGNOSTIC TROUBLE CODE CHART [10/2016 - 06/2017] or DIAGNOSTIC TROUBLE CODE CHART [06/2017 - ] )

    Result: 

    A 

    See step  2

  2. CHECK PCV HOSE CONNECTIONS 
    1. Check the PCV hose connections (Refer to COMPONENTS [10/2014 - ] ).

      OK

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

    Result: 

    NG 

    REPAIR OR REPLACE PCV HOSE 

    Result: 

    OK 

    See step  3

  3. READ VALUE USING TECHSTREAM (MISFIRE RPM AND MISFIRE LOAD) 
    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 and ECT / Data List / Gas Misfire / Misfire RPM and Misfire Load.
    5. Read and note the Misfire RPM and Misfire Load values.

      HINT: 

      The Misfire RPM and Misfire Load values indicate the vehicle conditions under which the misfire occurred.

    Result: 

    NEXT 

    See step  4

  4. READ VALUE USING TECHSTREAM (CYLINDER MISFIRE COUNT) 
    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 [10/2014 - ] ).
    5. Enter the following menus: Powertrain / Engine and ECT / Data List / Gas Misfire / Cylinder #1 Misfire Count, Cylinder #2 Misfire Count, Cylinder #3 Misfire Count and Cylinder #4 Misfire Count.
    6. Start the engine and allow the engine to idle.
    7. Read each value for Cylinder #1 Misfire Count to Cylinder #4 Misfire Count displayed on the Techstream. If no misfire counts occur in any cylinders, perform procedure [A] and [B] and then check the misfire counts again.
    8. Drive the vehicle with the Misfire RPM and Misfire Load noted in the "Read Value Using Techstream (Misfire RPM and Misfire Load)" procedures above [A].
    9. Read the Cylinder #1 Misfire Count to Cylinder #4 Misfire Count or DTCs displayed on the Techstream [B].
      RESULT

      Result Proceed to
      Most misfires occur in only 1 or 2 cylinders A
      3 cylinders or more have equal misfire counts B

      HINT: 

      • If it is difficult to reproduce misfires for each cylinder, check the Data List item called Misfire Margin. Try to find vehicle driving conditions that lower the Misfire Margin value. Values above 30% are considered normal.
      • If the freeze frame data record of the engine coolant temperature is below 75°C (167°F), the misfire may be detected only when the engine is cold.

    Result: 

    B 

    See step  17

    Result: 

    A 

    See step  5

  5. INSPECT SPARK PLUG 
    1. Inspect the spark plug of the misfiring cylinder (Refer to PROCEDURE - Step 3 ).

      HINT: 

      Perform "Inspection After Repair" after replacing the spark plug (Refer to INITIALIZATION [10/2014 - ] ).

    Result: 

    NG 

    REPLACE SPARK PLUG 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    OK 

    See step  6

  6. 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 [10/2014 - ] ).

    Result: 

    NEXT 

    See step  7

  7. 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 [10/2014 - ] ).

    Result: 

    NG 

    CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION 

    Result: 

    OK 

    See step  8

  8. CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY) 
    1. Disconnect the ECM connector.
      GTY603992Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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
      B51-20 (#10) - B51-50 (E01) Power switch on (IG) 11 to 14 V
      B51-17 (#20) - B51-50 (E01) Power switch on (IG) 11 to 14 V
      B51-18 (#30) - B51-50 (E01) Power switch on (IG) 11 to 14 V
      B51-19 (#40) - B51-50 (E01) Power switch on (IG) 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to ECM)

    Result: 

    NG 

    GO TO FUEL INJECTOR CIRCUIT 

    (Refer to Fuel Injector Circuit [10/2014 - 10/2015] Refer to Fuel Injector Circuit [10/2015 - ] )

    Result: 

    OK 

    See step  9

  9. CHECK FUEL INJECTOR ASSEMBLY OF MISFIRING CYLINDER 
    1. Check the fuel injector assembly injection (whether fuel volume is high or low, and whether injection pattern is poor) (Refer to INSPECTION [10/2014 - ] ).

      HINT: 

      Perform "Inspection After Repair" after replacing the fuel injector assembly (Refer to INITIALIZATION [10/2014 - ] ).

    Result: 

    NG 

    REPLACE FUEL INJECTOR ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    OK 

    See step  10

  10. CHECK INTAKE SYSTEM 
    1. Check the intake system for vacuum leaks (Refer to ON-VEHICLE INSPECTION [10/2014 - ] ).

      OK

      No leaks from intake system.

      HINT: 

      Perform "Inspection After Repair" after repairing or replacing the intake system (Refer to INITIALIZATION [10/2014 - ] ).

    Result: 

    NG 

    REPAIR OR REPLACE INTAKE SYSTEM 

    Result: 

    OK 

    See step  11

  11. CHECK FUEL PRESSURE 
    1. Check the fuel pressure (Refer to PROCEDURE - Step 2 ).

    Result: 

    NG 

    See step  34

    Result: 

    OK 

    See step  12

  12. READ VALUE USING TECHSTREAM (COOLANT TEMP) 

    See step  5

    Result: 

    NG 

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    OK 

    See step  13

  13. READ VALUE USING TECHSTREAM (MAF) 

    See step  6

    Result: 

    NG 

    See step  29

    Result: 

    OK 

    See step  14

  14. CHECK VALVE TIMING 

    See step  4Refer to PROCEDURE - Step 4

    Result: 

    NG 

    See step  35

    Result: 

    OK 

    See step  15

  15. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION) 
    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 [10/2014 - ] ).
    5. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

      HINT: 

      The A/C switch and all accessory switches should be off.

    6. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position / Data List / Primary / MAP and Throttle Idle Position.
    7. Confirm that the Throttle Idle Position is ON and check the MAP value in the Data List while performing the Active Test.

      HINT: 

      • Do not leave the EGR valve open for 10 seconds or more during the Active Test.
      • Be sure to return the EGR valve to step 0 when the Active Test is completed.
      • Do not open the EGR valve 30 steps or more during the Active Test.

      OK

      MAP change in response to EGR step position when Throttle Idle Position is ON in Data List.

      Standard

      - EGR Step Position (Active Test)
      0 Steps 0 to 30 Steps
      MAP
      (Data List)      		 (EGR valve is fully closed) MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully closed

      HINT: 

      • While performing the Active Test, if the increase in the value of MAP is small, the EGR valve assembly may be a malfunctioning.
      • Even if the EGR valve assembly is malfunctioning, rough idling or an increase in the value of MAP may occur while performing the Active Test. However, the amount that the value of MAP increases will be smaller than normal.
      RESULT

      Result Proceed to
      NG A
      OK B

    Result: 

    B 

    See step  29

    Result: 

    A 

    See step  16

  16. INSPECT EGR VALVE ASSEMBLY 
    1. Remove the EGR valve assembly (Refer to REMOVAL [10/2014 - ] ).
    2. Check if the EGR valve is stuck open.

      OK

      EGR valve is tightly closed.

      HINT: 

      Perform "Inspection After Repair" after replacing the EGR valve assembly (Refer to INITIALIZATION [10/2014 - ] ).

    Result: 

    OK 

    See step  29

    Result: 

    NG 

    REPLACE EGR VALVE ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

  17. CHECK INTAKE SYSTEM 
    1. Check the intake system for vacuum leaks (Refer to ON-VEHICLE INSPECTION [10/2014 - ] ).

      OK

      No leaks from intake system.

      HINT: 

      Perform "Inspection After Repair" after repairing or replacing the intake system (Refer to INITIALIZATION [10/2014 - ] ).

    Result: 

    NG 

    REPAIR OR REPLACE INTAKE SYSTEM 

    Result: 

    OK 

    See step  18

  18. CHECK FUEL PRESSURE 
    1. Check the fuel pressure (Refer to PROCEDURE - Step 2 ).

    Result: 

    NG 

    See step  34

    Result: 

    OK 

    See step  19

  19. READ VALUE USING TECHSTREAM (COOLANT TEMP) 

    See step  5

    Result: 

    NG 

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    OK 

    See step  20

  20. READ VALUE USING TECHSTREAM (MAF) 

    See step  6

    Result: 

    NG 

    See step  29

    Result: 

    OK 

    See step  21

  21. CHECK VALVE TIMING 

    See step  4Refer to PROCEDURE - Step 4

    Result: 

    NG 

    See step  35

    Result: 

    OK 

    See step  22

  22. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION) 
    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 [10/2014 - ] ).
    5. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

      HINT: 

      The A/C switch and all accessory switches should be off.

    6. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position / Data List / Primary / MAP and Throttle Idle Position.
    7. Confirm that the Throttle Idle Position is ON and check the MAP value in the Data List while performing the Active Test.

      HINT: 

      • Do not leave the EGR valve open for 10 seconds or more during the Active Test.
      • Be sure to return the EGR valve to step 0 when the Active Test is completed.
      • Do not open the EGR valve 30 steps or more during the Active Test.

      OK

      MAP change in response to EGR step position when Throttle Idle Position is ON in Data List.

      Standard

      - EGR Step Position (Active Test)
      0 Steps 0 to 30 Steps
      MAP
      (Data List)      		 (EGR valve is fully closed) MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully closed

      HINT: 

      • While performing the Active Test, if the increase in the value of MAP is small, the EGR valve assembly may be a malfunctioning.
      • Even if the EGR valve assembly is malfunctioning, rough idling or an increase in the value of MAP may occur while performing the Active Test. However, the amount that the value of MAP increases will be smaller than normal.
      RESULT

      Result Proceed to
      NG A
      OK B

    Result: 

    B 

    See step  24

    Result: 

    A 

    See step  23

  23. INSPECT EGR VALVE ASSEMBLY 
    1. Remove the EGR valve assembly (Refer to REMOVAL [10/2014 - ] ).
    2. Check if the EGR valve is stuck open.

      OK

      EGR valve is tightly closed.

      HINT: 

      Perform "Inspection After Repair" after replacing the EGR valve assembly (Refer to INITIALIZATION [10/2014 - ] ).

    Result: 

    NG 

    REPLACE EGR VALVE ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    OK 

    See step  24

  24. INSPECT SPARK PLUG 
    1. Inspect the spark plug of the misfiring cylinder (Refer to PROCEDURE - Step 3 ).

      HINT: 

      Perform "Inspection After Repair" after replacing the spark plug (Refer to INITIALIZATION [10/2014 - ] ).

    Result: 

    NG 

    REPLACE SPARK PLUG 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    OK 

    See step  25

  25. 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 [10/2014 - ] ).

    Result: 

    NEXT 

    See step  26

  26. 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 [10/2014 - ] ).

    Result: 

    NG 

    CHECK ENGINE TO DETERMINE CAUSE OF LOW COMPRESSION 

    Result: 

    OK 

    See step  27

  27. CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY) 
    1. Disconnect the ECM connector.
      GTY567684Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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
      B51-20 (#10) - B51-50 (E01) Power switch on (IG) 11 to 14 V
      B51-17 (#20) - B51-50 (E01) Power switch on (IG) 11 to 14 V
      B51-18 (#30) - B51-50 (E01) Power switch on (IG) 11 to 14 V
      B51-19 (#40) - B51-50 (E01) Power switch on (IG) 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to ECM)

    Result: 

    NG 

    GO TO FUEL INJECTOR CIRCUIT 

    (Refer to Fuel Injector Circuit [10/2014 - 10/2015] or Fuel Injector Circuit [10/2015 - ] )

    Result: 

    OK 

    See step  28

  28. CHECK FUEL INJECTOR ASSEMBLY OF MISFIRING CYLINDER 
    1. Check the fuel injector assembly injection (whether fuel volume is high or low, and whether injection pattern is poor) (Refer to INSPECTION [10/2014 - ] ).

      HINT: 

      Perform "Inspection After Repair" after replacing the fuel injector assembly (Refer to INITIALIZATION [10/2014 - ] ).

    Result: 

    NG 

    REPLACE FUEL INJECTOR ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    OK 

    See step  29

  29. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY CONNECTOR CONNECTION) 
    1. Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter sub-assembly and ECM (Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [10/2014 - ] ).

      HINT: 

      Repair any problems.

    Result: 

    NEXT 

    See step  30

  30. CHECK WHETHER DTC OUTPUT RECURS (MISFIRE DTCS) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).
    5. Turn the power switch off and wait for at least 30 seconds.
    6. Turn the power switch on (IG).
    7. Turn the Techstream on.
    8. Put the engine in inspection mode (maintenance mode) (Refer to INSPECTION MODE PROCEDURE [10/2014 - ] ).
    9. Start the engine and warm it up.
    10. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
    12. Input the DTC: P0300, P0301, P0302, P0303 or P0304.
    13. Check the DTC judgment result.
      RESULT

      Result Proceed to
      ABNORMAL
      (DTC P0300, P0301, P0302, P0303 and/or P0304 is output)      		 A
      NORMAL
      (DTCs are not output)      		 B

    Result: 

    B 

    END 

    Result: 

    A 

    See step  31

  31. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) 

    See step  3

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  32

  32. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY 
    1. Replace the mass air flow meter sub-assembly (Refer to REMOVAL [10/2014 - ] ).

      HINT: 

      • If the results of the inspections performed in steps 13 and 20 indicated no problem, proceed to the next step without replacing the mass air flow meter sub-assembly.
      • Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly (Refer to INITIALIZATION [10/2014 - ] ).

    Result: 

    NEXT 

    See step  33

  33. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).
    5. Turn the power switch off and wait for at least 30 seconds.
    6. Turn the power switch on (IG).
    7. Turn the Techstream on.
    8. Put the engine in inspection mode (maintenance mode) (Refer to INSPECTION MODE PROCEDURE [10/2014 - ] ).
    9. Start the engine and warm it up.
    10. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
    12. Input the DTC: P0300, P0301, P0302, P0303 or P0304.
    13. Check the DTC judgment result.
      RESULT

      Result Proceed to
      NORMAL
      (DTCs are not output)      		 A
      ABNORMAL
      (DTC P0300, P0301, P0302, P0303 and/or P0304 is output)      		 B

    Result: 

    A 

    END 

    Result: 

    B 

    REPLACE ECM 

    (Refer to REMOVAL [10/2014 - ] )

  34. CHECK FUEL LINE 
    1. Check the fuel lines for leaks or blockage.

      HINT: 

      Perform "Inspection After Repair" after replacing the fuel pump (Refer to INITIALIZATION [10/2014 - ] ).

    Result: 

    OK 

    REPLACE FUEL PUMP 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    NG 

    REPAIR OR REPLACE FUEL LINE 

  35. CHECK ENGINE MECHANICAL SYSTEM 

    See step  9Refer to PROCEDURE - Step 9

    Result: 

    NG 

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

    Result: 

    OK 

    See step  36

  36. CHECK WHETHER DTC OUTPUT RECURS (MISFIRE DTCS) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).
    5. Turn the power switch off and wait for at least 30 seconds.
    6. Turn the power switch on (IG).
    7. Turn the Techstream on.
    8. Put the engine in inspection mode (maintenance mode) (Refer to INSPECTION MODE PROCEDURE [10/2014 - ] ).
    9. Start the engine and warm it up.
    10. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
    12. Input the DTC: P0300, P0301, P0302, P0303 or P0304.
    13. Check the DTC judgment result.
      RESULT

      Result Proceed to
      ABNORMAL
      (DTC P0300, P0301, P0302, P0303 and/or P0304 is output)      		 A
      NORMAL
      (DTCs are not output)      		 B

    Result: 

    B 

    CHECK FOR INTERMITTENT PROBLEMS 

    (Refer to CHECK FOR INTERMITTENT PROBLEMS [10/2014 - ] )

    Result: 

    A 

    See step  37

  37. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY CONNECTOR CONNECTION) 
    1. Check the connection and terminal contact pressure of connectors and wire harnesses between the mass air flow meter sub-assembly and ECM (Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [10/2014 - ] ).

      HINT: 

      Repair any problems.

    Result: 

    NEXT 

    See step  38

  38. CHECK WHETHER DTC OUTPUT RECURS (MISFIRE DTCS) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).
    5. Turn the power switch off and wait for at least 30 seconds.
    6. Turn the power switch on (IG).
    7. Turn the Techstream on.
    8. Put the engine in inspection mode (maintenance mode) (Refer to INSPECTION MODE PROCEDURE [10/2014 - ] ).
    9. Start the engine and warm it up.
    10. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
    12. Input the DTC: P0300, P0301, P0302, P0303 or P0304.
    13. Check the DTC judgment result.
      RESULT

      Result Proceed to
      ABNORMAL
      (DTC P0300, P0301, P0302, P0303 and/or P0304 is output)      		 A
      NORMAL
      (DTCs are not output)      		 B

    Result: 

    B 

    END 

    Result: 

    A 

    See step  39

  39. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM) 

    See step  3

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  40

  40. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY 
    1. Replace the mass air flow meter sub-assembly (Refer to REMOVAL [10/2014 - ] ).

      HINT: 

      • If the results of the inspections performed in steps 13 and 20 indicated no problem, proceed to the next step without replacing the mass air flow meter subassembly.
      • Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly (Refer to INITIALIZATION [10/2014 - ] ).

    Result: 

    NEXT 

    See step  41

  41. CHECK WHETHER DTC OUTPUT RECURS (MISFIRE DTCS) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Clear the DTCs (Refer to DTC CHECK / CLEAR [10/2014 - ] ).
    5. Turn the power switch off and wait for at least 30 seconds.
    6. Turn the power switch on (IG).
    7. Turn the Techstream on.
    8. Put the engine in inspection mode (maintenance mode) (Refer to INSPECTION MODE PROCEDURE [10/2014 - ] ).
    9. Start the engine and warm it up.
    10. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
    12. Input the DTC: P0300, P0301, P0302, P0303 or P0304.
    13. Check the DTC judgment result.
      RESULT

      Result Proceed to
      ABNORMAL
      (DTC P0300, P0301, P0302, P0303 and/or P0304 is output)      		 A
      NORMAL
      (DTCs are not output)      		 B

    Result: 

    A 

    REPLACE ECM 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    B 

    END 

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