ECD SYSTEM, Diagnostic DTC:P2141 and 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 throttle body.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P2141

Diesel Throttle Motor Circuit Low

The throttle actuator current is below 0.5 A for 2.0 seconds during EGR valve operation (1 trip detection logic).

  • Open or short in throttle actuator circuit

  • Diesel throttle valve assembly

  • ECM

Comes on

DTC stored

P2142

Diesel Throttle Motor Circuit High

An throttle actuator current of 8 A or higher due to a mechanical malfunction, or a hall IC 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 valve assembly

  • ECM

Comes on

DTC stored
Table 1. 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

A112572E63

CAUTION / NOTICE / HINT

Note:

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

Tip:

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

    1. Inspect the diesel throttle body assembly.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE DIESEL THROTTLE BODY ASSEMBLYClick here

    OK

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

    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

      B3-2 (M+) - B76-42 (M+)

      Always

      Below 1 Ω

      B3-1 (M-) - B76-43 (M-)

      Always

      Below 1 Ω

      B3-2 (M+) or B76-42 (M+) - Body ground

      Always

      10 kΩ or higher

      B3-1 (M-) or B76-43 (M-) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTORClick here

    OK

  3. REPLACE ECM

    1. Replace the ECM.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick 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 > 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 > 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

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here