СИСТЕМА ECD, Diagnostic DTC:P1121

DTC Code DTC Name
P1121 Accelerator Pedal Position Sensor Range / Performance Problem

DESCRIPTION

Refer to DTC P1120 Click here.

P1121
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Ignition switch is ON

Condition (a) continues for 0.5 seconds or more:

(a) VPA2 - VPA < 0.45 V

(1 trip detection logic)

  • Accelerator pedal position sensor

WIRING DIAGRAM

Refer to DTC P1120 Click here.

INSPECTION PROCEDURE

Note

When replacing the ECM, the ECM needs Registration and Initialization Click here.

Tech Tips


  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the intelligent tester. Then after installing the new ECM, perform all of the initializations/registrations for the "Learning Values Write" function by following the instructions shown on the tester display.

  • 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, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P1121)


    1. Connect the intelligent tester to the DLC3.

    2. Start the engine and turn the tester on.

    3. Allow the engine to idle for 1 minute or more.

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

    5. Read the DTCs.

      Result
      Result Proceed to
      DTC P1121 A
      DTC P1121 and other DTCs B

      Tech Tips

      If any DTCs other than P1121 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. REPLACE ACCELERATOR PEDAL POSITION SENSOR ASSEMBLY


    1. Replace the accelerator pedal position sensor assembly Click here.


    NEXT

  3. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the intelligent tester to the DLC3.

    2. Clear the DTCs Click here.

    3. Turn the ignition switch off and wait for 30 seconds or more.

    4. Turn the ignition switch to ON.

    5. Depress and release the accelerator pedal slow and completely several times.

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

    7. Confirm that the DTC is not output again.


    NEXT

    END