ECD SYSTEM, Diagnostic DTC:P1034

DTC Code DTC Name
P1034 Throttle Valve Permanent Positive Governor Deviation

DESCRIPTION

Refer to DTC P0122.

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DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P1034 Throttle Valve Permanent Positive Governor Deviation

Either condition is met (3 trip detection logic):


  • The actual opening angle continuously deviates from the control target value of the throttle valve by 5% or more for 4 seconds.

  • The actual opening angle continuously deviates from the control target value of the throttle valve by -5% or more for 4 seconds.

The above condition occurs 4 times.

  • Diesel throttle body assembly

  • Open or short in diesel throttle body assembly circuit

 Does not come on DTC stored

WIRING DIAGRAM

Refer to DTC P0122.

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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 DIESEL THROTTLE BODY ASSEMBLY


    1. Check for excessive dirt or a mechanical malfunction in the diesel throttle body assembly.

      OK
      No mechanical malfunction or excessive dirt.
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE DIESEL THROTTLE BODY ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - 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
      X7-1 (VC) - B220-83 (VCTA) Always Below 1 Ω
      X7-3 (VTA) - B220-117 (VTA1) Always Below 1 Ω
      X7-2 (E2) - B220-81 (ETA) Always Below 1 Ω
      X7-4 (M+) - B220-50 (M+) Always Below 1 Ω
      X7-5 (M-) - B220-20 (M-) Always Below 1 Ω
      X7-1 (VC) or B220-83 (VCTA) - Body ground Always 10 kΩ or higher
      X7-3 (VTA) or B220-117 (VTA1) - Body ground Always 10 kΩ or higher
      X7-2 (E2) or B220-81 (ETA) - Body ground Always 10 kΩ or higher
      X7-4 (M+) or B220-50 (M+) - Body ground Always 10 kΩ or higher
      X7-5 (M-) or B220-20 (M-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (VC VOLTAGE)

    A01M2SDC04
    *a

    Front view of wire harness connector

    (to Diesel Throttle Body Assembly)

    1. Disconnect the diesel throttle body assembly connector.

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      X7-1 (VC) - X7-2 (E2) Ignition switch ON 4.5 to 5.5 V
      Result
      Proceed to
      OK
      NG

    NG

    GO TO STEP 5 Click here

    OK

  4. REPLACE DIESEL THROTTLE BODY ASSEMBLY


    1. Replace diesel throttle body assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 7 Click here

  5. REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.

      Result
      Proceed to
      NEXT

    NEXT

    GO TO STEP 7 Click here

  6. REPAIR OR REPLACE DIESEL THROTTLE BODY ASSEMBLY


    1. Repair or replace the diesel throttle body assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  7. 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 [A].

    5. Perform road test [B].

    6. Repeat [A] and [B] for the number of trips detected.

    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