ECD SYSTEM(w/ DPF), Diagnostic DTC:P2141, P2142

DTC Code DTC Name
P2141 Diesel Throttle Motor Circuit Low
P2142 Diesel Throttle Motor Circuit High

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 mounted on the diesel throttle body assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P2141 Diesel Throttle Motor Circuit Low

Both of the following conditions are met for 2.0 seconds (1 trip detectionlogic):


  • The throttle actuator duty cycle is 80% or higher.

  • The throttle actuator current is less than 0.5 A.

  • Open or short in throttle actuator circuit

  • Diesel throttle body assembly

  • ECM

 Comes on DTC stored
P2142 Diesel Throttle Motor Circuit High

A throttle actuator current of 8 A or higher or the ECM internal circuit temperature of 150 to 160°C (302 to 320°F) or higher is detected.

(1 trip detection logic).

  • Open or short in throttle actuator circuit

  • Diesel throttle body assembly

  • ECM

 Comes on DTC stored
Related Data List
DTC No. Data List
P2141 Throttle Motor DUTY
P2142

CONFIRMATION DRIVING PATTERN

DTC No. DTC Detection Drive Pattern
P2141 Idle the engine for 5 seconds or more
P2142

WIRING DIAGRAM

B0024YQE01
*a Throttle Actuator Control Circuit
*b Throttle Actuator (Built into Diesel Throttle Body Assembly)

CAUTION / NOTICE / HINT

Note

After replacing the ECM, the new ECM needs registration (Click here) and initialization Click here.

Tech Tips

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. INSPECT DIESEL THROTTLE BODY ASSEMBLY (RESISTANCE OF THROTTLE ACTUATOR)


    1. Inspect the diesel throttle body assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE DIESEL THROTTLE BODY ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (DIESEL THROTTLE BODY ASSEMBLY - ECM)


    1. Disconnect the diesel throttle body 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
      Y1-2 (M+) - C41-6 (M+) Always Below 1 Ω
      Y1-1 (M-) - C41-5 (M-) Always Below 1 Ω
      Y1-2 (M+) or C41-6 (M+) - Body ground and other terminals Always 10 kΩ or higher
      Y1-1 (M-) or C41-5 (M-) - Body ground and other terminals Always 10 kΩ or higher

    4. Reconnect the diesel throttle body assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  3. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 5 Click here

  4. REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.

      Result
      Proceed to
      NEXT

    NEXT

  5. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.


      Powertrain > Engine and ECT > Clear DTCs

    5. Turn the ignition switch off and wait for 30 seconds.

    6. Start the engine.

    7. Idle the engine for 5 seconds or more.

    8. Turn the GTS on.

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

    10. Confirm that the DTC is not output.


      Powertrain > Engine and ECT > Trouble Codes
      Result
      Proceed to
      NEXT

    NEXT

    END

  6. REPLACE DIESEL THROTTLE BODY ASSEMBLY


    1. Replace the diesel throttle body assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 5 Click here