ECD SYSTEM(for Swirl Control Valve), Diagnostic DTC:P1034

DTC Code DTC Name
P1034 Throttle Valve Permanent Positive Governor Deviation

DESCRIPTION

Refer to DTC P0122 (Click here).

DTC No.

DTC Detection Condition

Trouble Area

P1034

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

WIRING DIAGRAM

Refer to DTC P0122 (Click here).

CAUTION / NOTICE / HINT

Note:

When replacing the ECM, the ECM needs Registration and Initialization (Click here).

Tip:

  • 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.

    REPAIR OR REPLACE DIESEL THROTTLE BODY ASSEMBLYClick here

  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

      G1-1 (VC) - C112-83 (VCTA)

      Always

      Below 1 Ω

      G1-3 (VTA) - C112-117 (VTA1)

      Always

      Below 1 Ω

      G1-2 (E2) - C112-81 (ETA)

      Always

      Below 1 Ω

      G1-4 (M+) - C112-50 (M+)

      Always

      Below 1 Ω

      G1-5 (M-) - C112-20 (M-)

      Always

      Below 1 Ω

      G1-1 (VC) or C112-83 (VCTA) - Body ground

      Always

      10 kΩ or higher

      G1-3 (VTA) or C112-117 (VTA1) - Body ground

      Always

      10 kΩ or higher

      G1-2 (E2) or C112-81 (ETA) - Body ground

      Always

      10 kΩ or higher

      G1-4 (M+) or C112-50 (M+) - Body ground

      Always

      10 kΩ or higher

      G1-5 (M-) or C112-20 (M-) - Body ground

      Always

      10 kΩ or higher

    REPAIR OR REPLACE HARNESS OR CONNECTORClick here

  3. CHECK HARNESS AND CONNECTOR (VC VOLTAGE)

    U122331E02

    1. Disconnect the diesel throttle body assembly connector.

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      G1-1 (VC) - G1-2 (E2)

      Ignition switch ON

      4.5 to 5.5 V
      Table 1. Text in Illustration

      *a

      Front view of wire harness connector

      (to diesel throttle body assembly)

    REPAIR OR REPLACE HARNESS OR CONNECTORClick here

  4. REPLACE DIESEL THROTTLE BODY ASSEMBLY

    1. Replace diesel throttle body assembly (Click here).

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  5. REPAIR OR REPLACE DIESEL THROTTLE BODY ASSEMBLY

    1. Repair or replace the diesel throttle body assembly.

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  6. REPAIR OR REPLACE HARNESS OR CONNECTOR

    1. Repair or replace the harness or connector.

  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 (Click here).

    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.

    8. Confirm that the DTC is not output again.

    END