ECD SYSTEM, Diagnostic DTC:P1070, P1071

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

DESCRIPTION

Refer to P0045 Click here.

DTC No. DTC Detection Condition Trouble Area
P1070

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
DTC No. DTC Detection Condition Trouble Area
P1071

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

WIRING DIAGRAM

A01IUHTE45

INSPECTION PROCEDURE

Note

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

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 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
      C83-1 (VN+A) - C84-51 (VN+A) Always Below 1 Ω
      C83-2 (VN-A) - C84-21 (VN-A) Always Below 1 Ω
      C83-1 (VN+A) or C84-51 (VN+A) - Body ground Always 10 kΩ or higher
      C83-2 (VN-A) or C84-21 (VN-A) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR Click 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.

    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.

      Tech Tips

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


    NG

    REPLACE TURBOCHARGER SUB-ASSEMBLY Click 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 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: Engine and ECT / Trouble Codes.

    8. Read the DTCs.

      Result
      Result Proceed to
      No DTC output A
      DTC P1070 or P1071 B

    B

    REPLACE ECM Click here

    A

    END

  4. REPLACE TURBOCHARGER SUB-ASSEMBLY


    1. Replace the turbocharger sub-assembly Click here.


    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 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: Engine and ECT / Trouble Codes.

    8. Read the DTCs.

      Result
      Result Proceed to
      No DTC output A
      DTC P1070 or P1071 B

    B

    REPLACE ECM Click here

    A

    END

  6. REPLACE ECM


    1. Replace the ECM Click here.


    NEXT

    CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here

  7. REPAIR OR REPLACE HARNESS OR CONNECTOR


    1. Repair or replace the harness or connector.


    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 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: Engine and ECT / Trouble Codes.

    8. Confirm that the DTC is not output again.


    NEXT

    END