ECD SYSTEM, Diagnostic DTC:P1070 and P1071

DTC Code DTC Name
P1070 Turbo Charger Permanent Closed Governor Deviation
P1071 Turbo Charger Permanent Open Governor Deviation

DESCRIPTION

Refer to DTC P0045.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P1070

Turbo Charger Permanent Closed Governor Deviation

DC motor (turbocharger sub-assembly) detected as being stuck in closed position for 2 seconds.

(3 trip detection logic)

  • Open in DC motor (turbocharger sub-assembly) circuit

  • DC motor (turbocharger sub-assembly)

  • ECM

Comes on

DTC stored

P1071

Turbo Charger Permanent Open Governor Deviation

DC motor (turbocharger sub-assembly) detected as being stuck in open position for 2 seconds.

(3 trip detection logic)

  • Open in DC motor (turbocharger sub-assembly) circuit

  • DC motor (turbocharger sub-assembly)

  • ECM

Comes on

DTC stored

WIRING DIAGRAM

Refer to DTC P0045.

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 HARNESS AND CONNECTOR (DC MOTOR - ECM)

    1. Disconnect the DC motor 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

      B111-1 (VN+A) - B112-51 (VN+A)

      Always

      Below 1 Ω

      B111-2 (VN-A) - B112-21 (VN-A)

      Always

      Below 1 Ω

      B111-1 (VN+A) or B112-51 (VN+A) - Body ground

      Always

      10 kΩ or higher

      B111-2 (VN-A) or B112-21 (VN-A) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTORClick here

    OK

  2. PERFORM ACTIVE TEST USING GTS (ACTUATOR TEST OF TURBO CHARGER)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON and turn the GTS on.

    3. Start the engine.

    4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Actuator Test of Turbo Charger.

      Powertrain > Engine and ECT > Active Test

      Tester Display

      Actuator Test of Turbo Charger

    5. Set the control value to 5%. The variable nozzle vane turbocharger must operate within 1 second. Valve travel when adjusted is approximately 15 mm.

    6. Wait for 2 seconds and set the control value to 95%. The variable nozzle vane turbocharger must operate within 1 second. Valve travel when adjusted is approximately 15 mm.

    7. Wait for 2 seconds and stop the operation using the variable nozzle vane turbocharger Active Test.

      OK

      Operates smoothly when above procedure is performed.

      Tip:

      Check the movement of the variable turbine (stiffness, interference with other parts, etc.).

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE TURBOCHARGER SUB-ASSEMBLYClick here

    OK

  3. CHECK WHETHER DTC OUTPUT RECURS (DTC P1070 OR P1071)

    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. Read the DTCs.

      Result

      Result

      Proceed to

      No DTC output

      A

      DTC P1070 or P1071

      B
    A

    END

    B

    REPLACE ECMClick here

  4. REPLACE TURBOCHARGER SUB-ASSEMBLY

    1. Replace the turbocharger sub-assembly.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  5. CHECK WHETHER DTC OUTPUT RECURS (DTC P1070 OR P1071)

    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: Engine and ECT / Trouble Codes.

      Powertrain > Engine and ECT > Trouble Codes

    8. Read the DTCs.

      Result

      Result

      Proceed to

      No DTC output

      A

      DTC P1070 or P1071

      B
    A

    END

    B

  6. REPLACE ECM

    1. Replace the ECM.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIREDClick here

  7. REPAIR OR REPLACE HARNESS OR CONNECTOR

    1. Repair or replace the harness or connector.

    Result

    Proceed to

    NEXT
    NEXT

  8. 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: 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