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СИСТЕМА ECD, Diagnostic DTC:P2141, P2142

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

Table 1. P2141
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Idle the engine for 5 seconds or more

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

(1 trip detection logic)


  • 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
Table 2. P2142
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Idle the engine for 5 seconds or more

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
Table 3. Related Data List
DTC No. Data List

P2141

P2142

 Throttle Motor DUTY
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WIRING DIAGRAM

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INSPECTION PROCEDURE

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.

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PROCEDURE


  1. Click here

    INSPECT DIESEL THROTTLE BODY ASSEMBLY


    1. Remove the diesel throttle body assembly. (Click here).

    2. A003CUBE04

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      4 (M-) - 1 (M+) Always No short or no open circuit
      Table 4. Text in Illustration
      *a

      Component without harness connected

      (Diesel Throttle Body Assembly)

  2. Click here

    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
      D119-1 (M+) - D134-48 (M+) Always Below 1 Ω
      D119-4 (M-) - D134-18 (M-) Always Below 1 Ω
      D119-1 (M+) or D134-48 (M+) - Body ground and other terminals Always 10 kΩ or higher
      D119-4 (M-) or D134-18 (M-) - Body ground and other terminals Always 10 kΩ or higher

    4. Reconnect the diesel throttle body assembly connector.


  3. Click here

    REPLACE ECM


    1. Replace the ECM (Click here).


  4. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.


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    CHECK 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 (Click here).

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

    5. Start the engine.

    6. Idle the engine for 5 seconds or more.

    7. Turn the GTS on.

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

    9. Confirm that the DTC is not output.


  6. Click here

    END

  7. Click here

    REPLACE DIESEL THROTTLE BODY ASSEMBLYClick here