SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P211172, P211173

DTC Code DTC Name
P211172 Throttle Actuator "A" Control System Actuator Stuck Open
P211173 Throttle Actuator "A" Control System Actuator Stuck Closed

DESCRIPTION

The throttle actuator is operated by the ECM and opens and closes the throttle valve using gears. The opening angle of the throttle valve is detected by the throttle position sensor, which is built into the throttle body assembly. The throttle position sensor provides feedback to the ECM. This feedback allows the ECM to appropriately control the throttle actuator and monitor the throttle opening angle as the ECM responds to a request from the hybrid system.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P211172 Throttle Actuator "A" Control System Actuator Stuck Open The ECM signals the throttle actuator to close, but the actuator is stuck (1 trip detection logic).

  • Throttle actuator

  • Throttle body assembly

  • Throttle valve

  • Wire harness or connector

  • ECM

 Comes on DTC stored SAE Code: P2111
P211173 Throttle Actuator "A" Control System Actuator Stuck Closed The ECM signals the throttle actuator to open, but the actuator is stuck (1 trip detection logic).

  • Throttle actuator

  • Throttle body assembly

  • Throttle valve

  • Wire harness or connector

  • ECM

 Comes on DTC stored SAE Code: P2112

MONITOR DESCRIPTION

If the throttle valve remains at a certain angle despite a high drive current from the ECM, the ECM determines that there is a malfunction in the ETCS, illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Required Sensors/Components Throttle actuator (throttle body assembly)
Frequency of Operation Continuous

TYPICAL ENABLING CONDITIONS

P2111: Throttle Actuator Stuck Open
All of the following conditions are met -
System guard* judge condition On
Throttle actuator current 2 A or higher
Duty-cycle to close throttle 80% or higher
P2112: Throttle Actuator Stuck Closed
All of the following conditions are met -
System guard* judge condition On
Throttle actuator current 2 A or higher
Duty-cycle to open throttle 80% or higher
*: System guard set when following conditions are met -
Throttle actuator On
Throttle actuator duty calculation Executing
Throttle position sensor fail Not detected
Throttle actuator current-cut operation Not executing
Throttle actuator power supply 4 V or higher
Throttle actuator fail Not detected

TYPICAL MALFUNCTION THRESHOLDS

P2111: Throttle Actuator Stuck Open
Throttle position sensor voltage No change
P2112: Throttle Actuator Stuck Closed
Throttle position sensor voltage No change

CONFIRMATION DRIVING PATTERN

B004PU6E86

  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) [A].

  7. Turn the GTS on.

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

    Click here

  9. Start the engine and fully depress and release the accelerator pedal quickly (to open and close the throttle valve) [B].

    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, perform step [B] after charge control has completed.

  10. Enter the following menus: Powertrain / Engine / Trouble Codes [C].

  11. Read the pending DTCs.

    Tech Tips


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

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

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

  13. Input the DTC: P211172 or P211173.

  14. 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.

FAIL-SAFE

When these DTCs are stored, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 5.5° throttle valve opening angle by the return spring. The ECM stops the engine and the vehicle can be driven using solely the hybrid system. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

Fail-safe mode continues until a pass condition is detected, and the power switch is then turned off.

WIRING DIAGRAM

Refer to DTC P210014.

Click here

CAUTION / NOTICE / HINT

Note


  • Vehicle Control History may be stored in the hybrid vehicle control ECU if the engine is malfunctioning. Certain vehicle condition information is recorded when Vehicle Control History is stored. Reading the vehicle conditions recorded in both the freeze frame data and Vehicle Control History can be useful for troubleshooting.

    Click here

    (Select Powertrain in Health Check and then check the time stamp data.)

    Click here

  • If any "Engine Malfunction" Vehicle Control History item has been stored in the hybrid vehicle control ECU, make sure to clear it. However, as all Vehicle Control History items are cleared simultaneously, if any Vehicle Control History items other than "Engine Malfunction" are stored, make sure to perform any troubleshooting for them before clearing Vehicle Control History.

    Click here

Tech Tips


  • Refer to "Data List / Active Test" [Throttle Position Sensor No.1 Voltage, Throttle Position Sensor No.2 Voltage, Throttle Position Command, Throttle Motor Current, Throttle Motor Duty Ratio (Open) and Throttle Motor Duty Ratio (Close)].

    Click here

  • 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 help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P211172 OR P211173)


    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 P211172 or P211173 is output A
      DTC P211172 or P211173 and other DTCs are output B

      Tech Tips

      If any DTCs other than P211172 or P211173 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. 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.

      Tech Tips

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

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE THROTTLE BODY ASSEMBLY Click here

    OK

  3. 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

  4. READ VALUE USING GTS (THROTTLE POSITION)


    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 / Throttle Position Sensor No.1 Voltage, Throttle Position Sensor No.2 Voltage and Throttle Position Command.


      Powertrain > Engine > Data List
      Tester Display
      Throttle Position Sensor No.1 Voltage
      Throttle Position Sensor No.2 Voltage
      Throttle Position Command

    5. Read the values displayed on the GTS while wiggling the ECM wire harness.

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

    7. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      Value in Data List changes when wire harness is wiggled, or DTC is output A
      Other than above B

    B

    GO TO STEP 7 Click here

    A

  5. REPAIR OR REPLACE HARNESS OR CONNECTOR (THROTTLE BODY ASSEMBLY - ECM)


    1. As the DTC was stored due to a change in the contact resistance of the connector, repair or replace the wire harness or connector.

      Tech Tips

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    END

  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

  7. 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

  8. CHECK WHETHER DTC OUTPUT RECURS (DTC P211172 OR P211173)


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

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

    3. Read the DTCs.


      Powertrain > Engine > Trouble Codes
      Result
      Result Proceed to
      DTCs are not output A
      P211172 or P211173 is output B

    A

    END

    B

    REPLACE ECM Click here