ECD SYSTEM(w/ Urea SCR System), 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.

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
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
Related Data List
DTC No. Data List

P2141

P2142

 Throttle Motor DUTY

WIRING DIAGRAM

B001DX9E11
*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 (See page ) 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. Remove the diesel throttle body assembly Click here.

    2. B001F42E04
      Text in Illustration
      *a

      Component without harness connected

      (Diesel Throttle Body Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always No short or open circuit

    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
      r5-2 (M+) - C152-6 (M+) Always Below 1 Ω
      r5-1 (M-) - C152-5 (M-) Always Below 1 Ω
      r5-2 (M+) or C152-6 (M+) - Body ground and other terminals Always 10 kΩ or higher
      r5-1 (M-) or C152-5 (M-) - Body ground and other terminals Always 10 kΩ or higher

    4. Reconnect the diesel throttle body assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  3. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

    CHECK CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  4. REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.


    NEXT

  5. CHECK CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG) and turn the GTS on.

    3. Clear the DTCs Click here.

    4. Turn the engine 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.


    NEXT

    END