SFI SYSTEM, Diagnostic DTC:P2119

DTC Code DTC Name
P2119 Throttle Actuator Control Throttle Body Range / Performance

SYSTEM DESCRIPTION

The Electronic Throttle Control System (ETCS) is composed of the throttle actuator, throttle position sensor, accelerator pedal position sensor and ECM. The ECM operates the throttle actuator to regulate the throttle valve in response to driver inputs. The throttle position sensor detects the opening angle of the throttle valve, and provides the ECM with feedback so that the throttle valve can be appropriately controlled by the ECM.

DTC No. DTC Detection Condition Trouble Area
P2119 The throttle valve opening angle continues to vary greatly from the target opening angle (1 trip detection logic).

  • Electronic Throttle Control System (ETCS)

  • ECM

MONITOR DESCRIPTION

The ECM determines the actual opening angle of the throttle valve from the throttle position sensor signal. The actual opening angle is compared to the target opening angle calculated by the ECM. If the difference between these two values is outside the standard range, the ECM interprets this as a malfunction in the ETCS. The ECM then illuminates the MIL and stores the DTC.

If the malfunction is not repaired successfully, the DTC is stored when the accelerator pedal is quickly released (to close the throttle valve) after the engine speed reaches 5000 rpm by fully depressing the accelerator pedal (to fully open the throttle valve).

FAIL-SAFE

When this DTC as well as other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions 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 7° throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing in accordance with the accelerator pedal opening angle to allow the vehicle to continue running at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.

The ECM continues operating in fail-safe mode until a pass condition is detected, and the ignition switch is then turned off.

WIRING DIAGRAM

Refer to DTC P2102 Click here.

INSPECTION PROCEDURE

Tech Tips

Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. 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 FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2119)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

    4. Enter the following menus: Powertrain / Engine and ECT / DTC.

    5. Read the DTCs.

      Result
      Result Proceed to
      P2119 A
      P2119 and other DTCs B

      Tech Tips

      If any DTCs other than P2119 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY (RESISTANCE OF THROTTLE ACTUATOR)


    1. Inspect the throttle body with motor assembly Click here.


    NG

    REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY Click here

    OK

  3. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P2119)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

    4. Clear the DTCs Click here.

    5. Allow the engine to idle for 15 seconds.

      CAUTION:

      Exercise extreme care and take precautions in procedure "A" and "B" below. Failure to do so may result in the vehicle unexpectedly rolling away.

    6. Securely apply the parking brake and move the shift lever to D (procedure "A").

    7. While depressing the brake pedal securely, fully depress the accelerator pedal for 5 seconds (procedure "B").

    8. Enter the following menus: Powertrain / Engine and ECT / DTC.

    9. Read the DTCs.

      OK
      No DTC output.

      Tech Tips

      The output voltage of the throttle position sensor can be checked during procedure "B" using the intelligent tester. Variations in the output voltage indicate that the throttle actuator is in operation. To check the output voltage using the intelligent tester, enter the following menus: Powertrain / Engine and ECT /Data List / ETCS / Throttle Position No.1.


    NG

    REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY Click here

    OK

    END