SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P050B00

DTC Code DTC Name
P050B00 Cold Start Ignition Timing Performance

MONITOR DESCRIPTION

A monitor will run when the engine is started at an engine coolant temperature of -10 to 50°C (14 to 122°F). If certain conditions are met, a DTC is stored after the engine idles for 15 seconds (2 trip detection logic).

This DTC is designed to monitor the ignition timing at cold start. When the engine is started at an engine coolant temperature of less than 50°C (122°F), the ECM checks the ignition timing during engine idling. If the ignition timing advances beyond the specified level within 10 seconds, the ECM interprets this as a malfunction, illuminates the MIL and stores this DTC.

Note

The idle speed control learned values are cleared by performing learning value reset. Idle speed control learning needs to be performed before this DTC can be stored.

B004OV0E28
DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P050B00 Cold Start Ignition Timing Performance Ignition timing insufficiently retarded at cold start (2 trip detection logic).

  • Throttle body assembly

  • Mass air flow meter sub-assembly

  • PCV system

  • Air cleaner filter element sub-assembly

  • Intake system

  • VVT system

  • EGR valve assembly

  • Wire harness or connector

  • ECM

 Comes on DTC stored SAE Code: P050B

MONITOR STRATEGY

Required Sensors/Components (Main) Throttle body assembly
Required Sensors/Components (Related)

Engine coolant temperature sensor

Mass air flow meter sub-assembly
Frequency of Operation Once per driving cycle

TYPICAL MALFUNCTION THRESHOLDS

Accumulated time when ignition timing retard is cut off 8 seconds or more

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG).

  3. Turn the GTS on.

  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

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

  6. Turn the power switch on (IG).

  7. Turn the GTS on.

  8. Put the engine in Inspection Mode (Maintenance Mode).

    Click here

  9. Start the engine and warm it up for 5 minutes or more.

  10. Stop the engine.

  11. Leave the vehicle outside overnight.

  12. Turn the power switch on (IG) [A].

  13. Turn the GTS on.

  14. Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.

  15. Check that the value of the Data List item Coolant Temperature is between -10 and 50°C (14 and 122°F).

  16. Put the engine in Inspection Mode (Maintenance Mode).

    Click here

  17. Start the engine and warm it up until the engine coolant temperature is the same as the coolant temperature in the freeze frame data.

  18. Idle the engine for 1 minute or more [B].

  19. Enter the following menus: Powertrain / Engine / Trouble Codes.

  20. Read the pending DTC.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  21. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

  22. Input the DTC: P050B00.

  23. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips


    • If the judgment result is NORMAL, the system is normal.

    • If the judgment result is ABNORMAL, the system is malfunctioning.

    • If the judgment result is INCOMPLETE or N/A, idle the engine for 3 minutes, let the engine cool down, and then perform steps [A] and [B].

WIRING DIAGRAM

Refer to DTC P010012.

Click here

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following procedure.

Tech Tips


  • DTC P050B00 may be set when the engine has the symptoms listed below. If necessary, check the trouble areas listed below.

    Symptoms Factor Trouble Area

    Low idle speed when engine is cold

    (immediately after engine start)

    		 Excessive engine friction

    • Engine oil deterioration

    • Drive belt tension

    Rough idle when engine is cold

    (immediately after engine start)

    		 Abnormal combustion Fuel quality

  • Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was moving or stationary, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

PROCEDURE


  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P050B00)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Trouble Codes.

    5. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTC P050B00 is output A
      DTC P050B00 and other DTCs are output B

      Tech Tips

      If any DTCs other than P050B00 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. READ VALUE USING GTS (FUEL TRIM)

    Tech Tips

    Calculate the total fuel trim values to check the characteristic deviation of the mass air flow meter sub-assembly.


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Put the engine in Inspection Mode (Maintenance Mode).


      Powertrain > Hybrid Control > Utility
      Tester Display
      Inspection Mode

    5. Start the engine.

    6. Enter the following menus: Powertrain / Engine / Data List / Short FT Bank 1 and Long FT Bank 1.


      Powertrain > Engine > Data List
      Tester Display
      Short FT Bank 1
      Long FT Bank 1

    7. Read the values displayed on the GTS at engine idle.

    8. Add the Short FT Bank 1 and Long FT Bank 1 values to obtain the total fuel trim.

      Standard
      Total of Short FT Bank 1 and Long FT Bank 1 values is between -20 and 20%.
      Result
      Proceed to
      OK
      NG

    NG

    CHECK PCV HOSE CONNECTIONS Click here

    OK

  3. INSPECT THROTTLE BODY ASSEMBLY (VISUALLY CHECK THROTTLE VALVE)


    1. Check for foreign matter between the throttle valve and housing. If necessary, clean the throttle body assembly. Also, check that the throttle valve moves smoothly.

      OK
      Throttle valve is not contaminated with foreign matter and moves smoothly.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE THROTTLE BODY ASSEMBLY Click here

    OK

  4. PERFORM ACTIVE TEST USING GTS (CONTROL THE EGR STEP POSITION)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Put the engine in Inspection Mode (Maintenance Mode).


      Powertrain > Hybrid Control > Utility
      Tester Display
      Inspection Mode

    5. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher.

      Tech Tips

      The A/C switch and all accessories should be off.

    6. Enter the following menus: Powertrain / Engine / Active Test / Control the EGR Step Position / Data List / Intake Manifold Absolute Pressure, EGR Step Position and Engine Independent.


      Powertrain > Engine > Active Test
      Active Test Display
      Control the EGR Step Position
      Data List Display
      Intake Manifold Absolute Pressure
      EGR Step Position
      Engine Independent

    7. Confirm that the value of Data List item Engine Independent is "Operate" then check the value of Intake Manifold Absolute Pressure while performing the Active Test.

      Note


      • 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
      The value of Intake Manifold Absolute Pressure changes in response to the EGR step position when the value of Engine Independent is "Operate".
      Standard
      - Control the EGR Step Position (Active Test)
      0 Steps 0 to 30 Steps

      Intake Manifold Absolute Pressure

      (Data List)

      		 (EGR valve is fully closed) Intake Manifold Absolute Pressure value is at least +10 kPa (1.45 psi) higher than when EGR valve is fully closed

      Tech Tips


      • If the value of Data List item Engine Independent is "Not Opr" when the engine is idling, charge control is being performed. Perform the Active Test after charge control is complete ("Operate" is displayed).

      • While performing the Active Test, if the increase in the value of Intake Manifold Absolute Pressure is small, the EGR valve assembly may be malfunctioning.

      • Even if the EGR valve assembly is malfunctioning, rough idling or an increase in the value of Intake Manifold Absolute Pressure may occur while performing the Active Test. However, the amount that the value of Intake Manifold Absolute Pressure increases will be smaller than normal.

      Result
      Result Proceed to
      The value of Intake Manifold Absolute Pressure increases by 10 kPa(abs) or more, compared to when the EGR valve was fully closed (0 step) OK
      Other than above NG

      Tech Tips

      10 kPa = 1.45 psi


    OK

    GO TO STEP 14 Click here

    NG

  5. INSPECT EGR VALVE ASSEMBLY


    1. Remove the EGR valve assembly.

      Tech Tips

      Click here

    2. Check if the EGR valve is stuck open.

      OK
      EGR valve is tightly closed.
      Result
      Proceed to
      OK
      NG

    OK

    GO TO STEP 14 Click here

    NG

    GO TO STEP 25 Click here

  6. REPLACE THROTTLE BODY ASSEMBLY


    1. Replace the throttle body assembly.

      Tech Tips


      • Click here

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

        Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 29 Click here

  7. CHECK PCV HOSE CONNECTIONS


    1. Check the PCV hose connections.

      Tech Tips

      Click here

      OK
      PCV valve and hose are connected correctly and are not damaged.
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE PCV HOSE Click here

    OK

  8. CHECK INTAKE SYSTEM


    1. Check the intake system for vacuum leaks.

      Click here

      OK
      No leaks from intake system.
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE INTAKE SYSTEM Click here

    OK

  9. CHECK AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY


    1. Visually check that the air cleaner filter element sub-assembly is not excessively contaminated with dirt or oil.

      OK
      The air cleaner filter element sub-assembly is not excessively contaminated with dirt or oil.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY Click here

    OK

  10. PERFORM ACTIVE TEST USING GTS (CONTROL THE EGR STEP POSITION)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Put the engine in Inspection Mode (Maintenance Mode).


      Powertrain > Hybrid Control > Utility
      Tester Display
      Inspection Mode

    5. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher.

      Tech Tips

      The A/C switch and all accessories should be off.

    6. Enter the following menus: Powertrain / Engine / Active Test / Control the EGR Step Position / Data List / Intake Manifold Absolute Pressure, EGR Step Position and Engine Independent.


      Powertrain > Engine > Active Test
      Active Test Display
      Control the EGR Step Position
      Data List Display
      Intake Manifold Absolute Pressure
      EGR Step Position
      Engine Independent

    7. Confirm that the value of Data List item Engine Independent is "Operate" then check the value of Intake Manifold Absolute Pressure while performing the Active Test.

      Note


      • 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
      The value of Intake Manifold Absolute Pressure changes in response to the EGR step position when the value of Engine Independent is "Operate".
      Standard
      - Control the EGR Step Position (Active Test)
      0 Steps 0 to 30 Steps

      Intake Manifold Absolute Pressure

      (Data List)

      		 (EGR valve is fully closed) Intake Manifold Absolute Pressure value is at least +10 kPa (1.45 psi) higher than when EGR valve is fully closed

      Tech Tips


      • If the value of Data List item Engine Independent is "Not Opr" when the engine is idling, charge control is being performed. Perform the Active Test after charge control is complete ("Operate" is displayed).

      • While performing the Active Test, if the increase in the value of Intake Manifold Absolute Pressure is small, the EGR valve assembly may be malfunctioning.

      • Even if the EGR valve assembly is malfunctioning, rough idling or an increase in the value of Intake Manifold Absolute Pressure may occur while performing the Active Test. However, the amount that the value of Intake Manifold Absolute Pressure increases will be smaller than normal.

      Result
      Result Proceed to
      The value of Intake Manifold Absolute Pressure increases by 10 kPa(abs) or more, compared to when the EGR valve was fully closed (0 step) OK
      Other than above NG

      Tech Tips

      10 kPa = 1.45 psi


    OK

    GO TO STEP 12 Click here

    NG

  11. INSPECT EGR VALVE ASSEMBLY


    1. Remove the EGR valve assembly.

      Tech Tips

      Click here

    2. Check if the EGR valve is stuck open.

      OK
      EGR valve is tightly closed.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE EGR VALVE ASSEMBLY Click here

    OK

  12. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INTAKE VVT OCV DUTY RATIO BANK 1)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Put the engine in Inspection Mode (Maintenance Mode).


      Powertrain > Hybrid Control > Utility
      Tester Display
      Inspection Mode

    5. Start the engine.

    6. Enter the following menus: Powertrain / Engine / Active Test / Control the Intake VVT OCV Duty Ratio Bank 1 / Data List / Intake VVT Change Angle Bank 1.


      Powertrain > Engine > Active Test
      Active Test Display
      Control the Intake VVT OCV Duty Ratio Bank 1
      Data List Display
      Intake VVT Change Angle Bank 1

    7. Read the Data List while performing the Active Test with the engine idling.

      OK
      GTS Operation Data List (Intake VVT Change Angle Bank 1)
      -100% to 100% Varies by 70 DegFR or more

      Tech Tips


      • Test not possible with park (P) selected during charge control. Select neutral (N) to perform test.

      • If DTCs are stored after the Active Test, clear the DTCs.

      Result
      Result Proceed to
      The value of Intake VVT Change Angle Bank 1 is 70 DegFR or more OK
      Other than above NG

    NG

    INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Click here

    OK

  13. READ VALUE USING GTS (MASS AIR FLOW SENSOR)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Put the engine in Inspection Mode (Maintenance Mode).


      Powertrain > Hybrid Control > Utility
      Tester Display
      Inspection Mode

    5. Start the engine.

    6. Enter the following menus: Powertrain / Engine / Data List / Engine Speed, Mass Air Flow Sensor and Coolant Temperature.


      Powertrain > Engine > Data List
      Tester Display
      Engine Speed
      Mass Air Flow Sensor
      Coolant Temperature

    7. Allow the engine to idle until Coolant Temperature is 75°C (167°F) or higher.

    8. Read Mass Air Flow Sensor with the engine speed at 2500 rpm.

      Tech Tips

      During charge control, the engine speed is set at idle. Therefore, the engine speed will not increase when the accelerator pedal is depressed. In this case, read the Data List after charge control has completed.

      Standard
      GTS Display Condition Specified Condition
      Mass Air Flow Sensor

      Engine warmed up

      Shift position: P

      A/C: Off

      Engine Speed: 2500 rpm

      		 Between 4.5 and 8.5 gm/sec
      Result
      Result Proceed to
      The value of Mass Air Flow Sensor is between 4.5 gm/sec and 8.5 gm/sec OK
      Other than above NG

    NG

    GO TO STEP 31 Click here

    OK

  14. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS 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

    NEXT

  15. CHECK WHETHER DTC OUTPUT RECURS (DTC P050B00)

    Note

    In this operation, the engine must be cold (approximately the same as the engine coolant temperature recorded in the freeze frame data).


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.


      Powertrain > Engine > Data List
      Tester Display
      Coolant Temperature

    5. Check that the engine coolant temperature is between -10 and 50°C (14 and 122°F).

    6. Put the engine in Inspection Mode (Maintenance Mode).

      Tech Tips

      Click here

    7. Start the engine and warm it up until the engine coolant temperature is the same as the engine coolant temperature in the freeze frame data.

    8. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

    9. Enter the following menus: Powertrain / Engine / Utility / All Readiness.


      Powertrain > Engine > Utility
      Tester Display
      All Readiness

    10. Input the DTC: P050B00.

    11. Check the DTC judgment result.

      Result
      Result Proceed to

      NORMAL

      (DTCs are not output)

      		 A

      ABNORMAL

      (DTC P050B00 is output)

      		 B

    A

    CHECK FOR INTERMITTENT PROBLEMS Click here

    B

    GO TO STEP 31 Click here

  16. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY


    1. Inspect the camshaft timing oil control valve assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Click here

    OK

  17. CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH)


    1. Remove the cylinder head cover sub-assembly.

      B004OOKC01
      *a 39.5° *b Timing Mark
      *c "0" Timing Mark *d Groove

    2. Turn the crankshaft pulley and align its groove with the "0" timing mark of the timing chain or belt cover sub-assembly.

    3. Check that the timing marks of the camshaft timing gear assembly and camshaft timing sprocket are at the positions shown in the illustration.

      Tech Tips

      If the timing marks are not as shown, turn the crankshaft one revolution clockwise.

      OK
      Timing marks on camshaft timing gear assembly and camshaft timing sprocket are at the positions shown in the illustration.

      Tech Tips

      If the result is not as specified, check for mechanical malfunctions that may have affected the valve timing, such as a jumped tooth or stretching of the timing chain.

      Result
      Proceed to
      OK
      NG

    NG

    CHECK ENGINE MECHANICAL SYSTEM Click here

    OK

  18. INSPECT CAMSHAFT TIMING GEAR ASSEMBLY


    1. Inspect the camshaft timing gear assembly.

      Tech Tips

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE CAMSHAFT TIMING GEAR ASSEMBLY Click here

    OK

  19. INSPECT OIL CONTROL VALVE FILTER

    B004OVGC01
    *1 Oil Control Valve Filter

    1. Remove the oil control valve filter.

      Tech Tips

      Click here

    2. Check that the filter is not clogged.

      OK
      Filter is not clogged.
      Result
      Proceed to
      OK
      NG

    OK

    GO TO STEP 29 Click here

    NG

  20. REPLACE OIL CONTROL VALVE FILTER


    1. Replace the oil control valve filter.

      Tech Tips

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 29 Click here

  21. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY


    1. Replace the camshaft timing gear assembly.

      Tech Tips


      • Click here

      • Perform "Inspection After Repair" after replacing the camshaft timing gear assembly.

        Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 29 Click here

  22. CHECK ENGINE MECHANICAL SYSTEM


    1. Check for mechanical malfunctions that affect the valve timing, such as a jumped tooth or stretching of the timing chain.

      Result
      Proceed to
      OK
      NG

    OK

    GO TO STEP 29 Click here

    NG

  23. REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

    Tech Tips

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

    Click here

    Result
    Proceed to
    NEXT

    NEXT

    GO TO STEP 29 Click here

  24. REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY


    1. Replace the camshaft timing oil control valve assembly.

      Tech Tips

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 29 Click here

  25. REPLACE EGR VALVE ASSEMBLY


    1. Replace the EGR valve assembly.

      Tech Tips


      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 29 Click here

  26. REPLACE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY


    1. Replace the air cleaner filter element sub-assembly.

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 29 Click here

  27. REPAIR OR REPLACE INTAKE SYSTEM


    1. Repair or replace the intake system.

      Tech Tips

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

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 29 Click here

  28. REPAIR OR REPLACE PCV HOSE


    1. Repair or replace the PCV valve or hose.

      Result
      Proceed to
      NEXT

    NEXT

  29. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS 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

    NEXT

  30. CHECK WHETHER DTC OUTPUT RECURS (DTC P050B00)

    Note

    In this operation, the engine must be cold (approximately the same as the engine coolant temperature recorded in the freeze frame data).


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.


      Powertrain > Engine > Data List
      Tester Display
      Coolant Temperature

    5. Check that the engine coolant temperature is between -10 and 50°C (14 and 122°F).

    6. Put the engine in Inspection Mode (Maintenance Mode).

      Tech Tips

      Click here

    7. Start the engine and warm it up until the engine coolant temperature is the same as the engine coolant temperature in the freeze frame data.

    8. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

    9. Enter the following menus: Powertrain / Engine / Utility / All Readiness.


      Powertrain > Engine > Utility
      Tester Display
      All Readiness

    10. Input the DTC: P050B00.

    11. Check the DTC judgment result.

      Result
      Result Proceed to

      NORMAL

      (DTCs are not output)

      		 A

      ABNORMAL

      (DTC P050B00 is output)

      		 B

    A

    END

    B

  31. 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.

      Tech Tips


      Result
      Proceed to
      NEXT

    NEXT

  32. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS 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

    NEXT

  33. CHECK WHETHER DTC OUTPUT RECURS (DTC P050B00)

    Note

    In this operation, the engine must be cold (approximately the same as the engine coolant temperature recorded in the freeze frame data).


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.


      Powertrain > Engine > Data List
      Tester Display
      Coolant Temperature

    5. Check that the engine coolant temperature is between -10 and 50°C (14 and 122°F).

    6. Put the engine in Inspection Mode (Maintenance Mode).

      Tech Tips

      Click here

    7. Start the engine and warm it up until the engine coolant temperature is the same as the engine coolant temperature in the freeze frame data.

    8. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

    9. Enter the following menus: Powertrain / Engine / Utility / All Readiness.


      Powertrain > Engine > Utility
      Tester Display
      All Readiness

    10. Input the DTC: P050B00.

    11. Check the DTC judgment result.

      Result
      Result Proceed to

      NORMAL

      (DTCs are not output)

      		 A

      ABNORMAL

      (DTC P050B00 is output)

      		 B

    A

    END

    B

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


    1. Disconnect the mass air flow meter sub-assembly connector.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      C5-3 (VG) - C31-137 (VG) Always Below 1 Ω
      C5-2 (E2G) - C31-104 (E2G) Always Below 1 Ω
      C5-3 (VG) or C31-137 (VG) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  35. REPLACE MASS AIR FLOW METER SUB-ASSEMBLY


    1. Replace the mass air flow meter sub-assembly.

      Tech Tips


      • Click here

      • If the result of the inspection performed in step 13 (READ VALUE USING GTS (MASS AIR FLOW SENSOR)) 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.

        Click here

      Result
      Proceed to
      NEXT

    NEXT

  36. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS 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

    NEXT

  37. CHECK WHETHER DTC OUTPUT RECURS (DTC P050B00)

    Note

    In this operation, the engine must be cold (approximately the same as the engine coolant temperature recorded in the freeze frame data).


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / Coolant Temperature.


      Powertrain > Engine > Data List
      Tester Display
      Coolant Temperature

    5. Check that the engine coolant temperature is between -10 and 50°C (14 and 122°F).

    6. Put the engine in Inspection Mode (Maintenance Mode).

      Tech Tips

      Click here

    7. Start the engine and warm it up until the engine coolant temperature is the same as the engine coolant temperature in the freeze frame data.

    8. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

    9. Enter the following menus: Powertrain / Engine / Utility / All Readiness.


      Powertrain > Engine > Utility
      Tester Display
      All Readiness

    10. Input the DTC: P050B00.

    11. Check the DTC judgment result.

      Result
      Result Proceed to

      NORMAL

      (DTCs are not output)

      		 A

      ABNORMAL

      (DTC P050B00 is output)

      		 B

    A

    END

    B

    REPLACE ECM Click here