ECD SYSTEM, Diagnostic DTC:P2138

DTC Code DTC Name
P2138 Throttle / Pedal Position Sensor / Switch "D"/"E" Voltage Correlation

DESCRIPTION

Refer to DTC P2122.

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DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P2138 Throttle / Pedal Position Sensor / Switch "D"/"E" Voltage Correlation

The difference between VPA and VPA2 is less than 0.45 V for 0.5 seconds.

(1 trip detection logic)

 Accelerator pedal sensor assembly Comes on DTC stored

WIRING DIAGRAM

Refer to DTC P2122.

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CAUTION / NOTICE / HINT

Note

When replacing the ECM, the ECM needs registration and initialization.

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Tech Tips


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

  • Read freeze frame data using the GTS. 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 P2138)


    1. Connect the GTS to the DLC3.

    2. Start the engine and turn the GTS on.

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

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


      Powertrain > Engine and ECT > Trouble Codes

    5. Read the DTCs.

      Result
      Result Proceed to
      DTC P2138 A
      DTC P2138 and other DTCs B

      Tech Tips

      If any DTCs other than P2138 are output, troubleshoot those DTCs first.


    B

    GO TO DTC CHART Click here

    A

  2. REPLACE ACCELERATOR PEDAL SENSOR ASSEMBLY


    1. Replace the accelerator pedal sensor assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  3. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Clear the DTCs.


      Powertrain > Engine and ECT > Clear DTCs

    4. Turn the ignition switch off and wait for 60 seconds or more.

    5. Turn the ignition switch to ON.

    6. Depress and release the accelerator pedal slowly and completely several times.

    7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.


      Powertrain > Engine and ECT > Trouble Codes

    8. Confirm that the DTC is not output again.

      Result
      Proceed to
      NEXT

    NEXT

    END