Dtc P2006 Intake Manifold Runner Control Stuck Closed (Bank 1)


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P2006)

CHECK AIR INTAKE SYSTEM

REPAIR OR REPLACE AIR INTAKE SYSTEM

CHECK INTAKE MANIFOLD (SWIRL CONTROL VALVE OPERATION)

READ VALUE USING INTELLIGENT TESTER (MAF AND MAP)

CLEAN MASS AIR FLOW METER

CHECK AND REPLACE TURBOCHARGER SUB-ASSEMBLY

CHECK CONNECTION OF VACUUM HOSE

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (ACTIVATE THE VSV FOR SWIRL CONTROL VALVE)

INSPECT ELECTRIC EGR CONTROL VALVE ASSEMBLY

REPLACE ELECTRIC EGR CONTROL VALVE ASSEMBLY

INSPECT INTAKE MANIFOLD (SWIRL CONTROL VALVE OPERATION)

REPAIR OR REPLACE VACUUM HOSE

REPLACE INTAKE MANIFOLD

REPLACE VACUUM CONTROL VALVE SET

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (ACTIVATE THE VSV FOR SWIRL CONTROL VALVE)

REPLACE ECM

CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

DTC P2006 Intake Manifold Runner Control Stuck Closed (Bank 1)


DESCRIPTION

The swirl control valve is mounted on the intake manifold. The vacuum switching valve is used to change the vacuum to control the swirl control valve.
The ECM determines the opening angle of the swirl control valve, and uses the vacuum switching valve (for swirl control valve) to change the vacuum applied to the actuator's diaphragm to open and close the swirl control valve.

DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
After warming up engine, drive vehicle at an engine speed of 3200 rpm or more with high load for 1 minute or more.*
When actual intake air volume detected by mass air flow meter continues to be smaller than volume estimated from boost pressure and intake air temperature sensor, ECM determines that swirl control valve is stuck closed (1 trip detection logic).
  1. Vacuum switching valve (for swirl control valve)
  2. Open or short in vacuum switching valve (for swirl control valve) circuit
  3. Intake manifold (swirl control valve)
  4. Electric EGR control valve assembly
  5. Turbocharger sub-assembly
  6. Mass air flow meter
  7. Air cleaner hose
  8. Vacuum hose
  9. Air cleaner element is clogged
  10. Intake hose is disconnected
  11. ECM
HINT:
*: When the above driving pattern cannot be performed due to road conditions, etc., the swirl control valve can be determined to be functioning normally if mass air flow is 84 g/sec. or more and MAP is 114 kPa or higher when the engine speed is at 4000 rpm with no load. However, no DTCs are stored when inspecting the vehicle with this method.
The above values were measured under standard atmospheric pressure. The values are influenced by elevation, weather conditions, etc.
Standard atmospheric pressure is 101 kPa. For every 100 m increase in elevation, pressure drops by 1 kPa. This varies by weather.

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System. Dtc P2006 Intake Manifold Runner Control Stuck Closed (Bank 1)


Text in Illustration
*1
ECM
*2
Swirl Control Valve
*3
Vacuum Pump
*4
Vacuum Switching Valve (for Swirl Control Valve)
*5
Swirl Control Valve Actuator
-
-

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System. Dtc P2006 Intake Manifold Runner Control Stuck Closed (Bank 1)


INSPECTION PROCEDURE

HINT:
Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when a malfunction is 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.
1.CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P2006)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and turn the tester on.

  1. Enter the following menus: Powertrain / Engine / DTC.

  1. Read the DTCs.

    Result
    Result
    		Proceed to
    P2006
    		A
    P2006 and other DTCs
    		B
    HINT:
    When MAP, mass air flow, Intake Air, and/or Intake Air Temp (Turbo)-related DTCs are stored along with P2006, perform troubleshooting for those DTCs first.
    MAP-related DTCs: P0107 and P0108 (LandCruiser RM00000187U0CAX.html).
    MAF-related DTCs: P0102 and P0103 (LandCruiser RM00000187J09CX.html).
    Intake Air-related DTCs: P0112 and P0113 (LandCruiser RM00000187L09BX.html).
    Intake Air Temp (Turbo)-related DTCs: P1496 and P1497 (LandCruiser RM00000188109YX.html).


B
GO TO RELEVANT DTC CHART (LandCruiser RM0000031HW07LX.html)
A


2.CHECK AIR INTAKE SYSTEM

  1. Check for air leaks and blockages between the air cleaner case and turbocharger, and between the turbocharger and intake manifold.

    Result
    Result
    		Proceed to
    Leaks and/or blockages exist in the intake system
    		A
    No leaks or blockages in the intake system
    		B
    HINT:
    1. Inspect the air intake system, especially hoses and pipes between the air cleaner and turbocharger.
    2. Check if the air cleaner element is significantly dirty.
    3. Check for abnormal disconnections, pipe and hose squashing, and any damage in the intake system.
    4. Using your hand, check whether the pipes and hoses in the intake system are securely connected.
    5. By applying soapy water and revving up the engine, air leaks from the intake system can be checked by checking for bubbles.
    6. Check for any modifications in the intake system made by the user.


B
Go to step 4
A


3.REPAIR OR REPLACE AIR INTAKE SYSTEM

  1. Repair or replace the malfunctioning part in the air intake system.



NEXT
Go to step 18

4.CHECK INTAKE MANIFOLD (SWIRL CONTROL VALVE OPERATION)


  1. Check the movement of the swirl control valve immediately after starting the engine.


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System. Dtc P2006 Intake Manifold Runner Control Stuck Closed (Bank 1)


    Text in Illustration
    *1
    		Swirl control valve
    		-
    		-
    OK:
    Swirl control valve rod moves smoothly in the direction indicated by the arrow in the illustration.


NG
Go to step 8
OK


5.READ VALUE USING INTELLIGENT TESTER (MAF AND MAP)

  1. Connect the intelligent tester to the DLC3.

  1. Start the engine and turn the tester on.

  1. Warm up the engine (engine coolant temperature is 70°C (158°F) or higher).

  1. Enter the following menus: Powertrain / Engine and ECT / Data List / MAP and MAF.

  1. Take a snapshot when the engine speed is maintained at 4000 rpm with no load.

  1. Read the values of "MAP" and "MAF" in the Data List using the snapshot review function.

    Result
    Result
    		Proceed to
    MAF 84 g/sec. or more and MAP 114 kPa or higher
    		C
    MAP below 90 kPa
    		B
    Except above
    		A
    HINT:
    1. The shift lever should be in neutral and the A/C switch and all accessory switches should be off.
    2. The above values were measured under standard atmospheric pressure. The values are influenced by elevation, weather conditions, etc.
      Standard atmospheric pressure is 101 kPa. For every 100 m increase in elevation, pressure drops by 1 kPa. This varies by weather.


B
Go to step 7

C
END
A


6.CLEAN MASS AIR FLOW METER

  1. Remove any deposits adhering to the mass air flow meter.



NEXT
Go to step 18

7.CHECK AND REPLACE TURBOCHARGER SUB-ASSEMBLY

  1. Check the turbocharger sub-assembly (LandCruiser RM000003TBT01VX.html).

  1. Replace the turbocharger sub-assembly (LandCruiser RM000002S6F00ZX.html).

    HINT:
    It is only necessary to replace the part when the results of the inspection indicate a problem.


NEXT
Go to step 18

8.CHECK CONNECTION OF VACUUM HOSE

  1. Check the connection of the swirl control valve system vacuum hose.



NG
Go to step 13
OK


9.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (ACTIVATE THE VSV FOR SWIRL CONTROL VALVE)
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System. Dtc P2006 Intake Manifold Runner Control Stuck Closed (Bank 1)

  1. Disconnect the vacuum hoses from the VSV for swirl control valve.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and turn the tester on.

  1. Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for Swirl Control Valve.

  1. Check the VSV operation when it is operated using the intelligent tester.

    OK:
    Tester Operation
    		Specified Condition
    VSV ON
    		Air from port E flows out through port F
    VSV OFF
    		Air from port E flows out through air filter

  1. Reconnect the vacuum hoses.



NG
Go to step 15
OK


10.INSPECT ELECTRIC EGR CONTROL VALVE ASSEMBLY

  1. Inspect the electric EGR control valve assembly (LandCruiser RM000002RK7022X.html).

    HINT:
    1. If there are any deposits adhering to the valve, clean the valve. When cleaning the valve, use diesel fuel or kerosene.
    2. When inspecting the electric EGR control valve assembly, make sure that the valve is fully closed.


OK
Go to step 12

NG
Go to step 11

11.REPLACE ELECTRIC EGR CONTROL VALVE ASSEMBLY

  1. Replace the electric EGR control valve assembly (LandCruiser RM000002RK903UX.html).


NEXT


12.INSPECT INTAKE MANIFOLD (SWIRL CONTROL VALVE OPERATION)

  1. Inspect the intake manifold (swirl control valve) (LandCruiser RM0000044GD00HX.html).

    HINT:
    1. If there are any deposits adhering to the valve, clean the valve.
    2. If there are any deposits adhering to the valve, clean the valve. When cleaning the valve, use diesel fuel or kerosene.
    3. Apply vacuum to the diaphragm of the swirl control valve and check that the valve opens and closes smoothly.


OK
Go to step 18

NG
Go to step 14

13.REPAIR OR REPLACE VACUUM HOSE

  1. Repair or replace the vacuum hose.



NEXT
Go to step 18

14.REPLACE INTAKE MANIFOLD

  1. Replace the intake manifold (swirl control valve) (LandCruiser RM0000044GF016X.html).



NEXT
Go to step 18

15.REPLACE VACUUM CONTROL VALVE SET

  1. Replace the vacuum control valve set (LandCruiser RM0000044GF016X.html).

    HINT:
    Before replacing the vacuum control valve set, perform a wire harness inspection and if there are any problems with the wire harness, repair or replace it.

NEXT


16.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (ACTIVATE THE VSV FOR SWIRL CONTROL VALVE)
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Kd-Ftv Engine Control.Ecd System. Dtc P2006 Intake Manifold Runner Control Stuck Closed (Bank 1)

  1. Disconnect the vacuum hoses from the vacuum switching valve (for Swirl Control Valve).

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and turn the tester on.

  1. Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for Swirl Control Valve.

  1. Check the VSV operation when it is operated using the intelligent tester.

    OK:
    Tester Operation
    		Specified Condition
    VSV ON
    		Air from port E flows out through port F
    VSV OFF
    		Air from port E flows out through air filter

  1. Reconnect the vacuum hoses.



OK
Go to step 18

NG
Go to step 17

17.REPLACE ECM

  1. Replace the ECM (LandCruiser RM0000013Z002CX.html).


NEXT


18.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Connect the intelligent tester to the DLC3.

  1. Start the engine and turn the tester on.

  1. Warm up the engine (engine coolant temperature is 70°C (158°F) or higher).

  1. Enter the following menus: Powertrain / Engine and ECT / Data List / MAP and MAF.

  1. Take a snapshot when the engine speed is maintained at 4000 rpm with no load.

  1. Read the values of "MAP" and "MAF" in the Data List using the snapshot review function.

    OK:
    MAF is 84 g/sec. or more and MAP is 114 kPa or higher.
    HINT:
    1. The shift lever should be in neutral and the A/C switch and all accessory switches should be off.
    2. The above values were measured under standard atmospheric pressure. The values are influenced by elevation, weather conditions, etc.
      Standard atmospheric pressure is 101 kPa. For every 100 m increase in elevation, pressure drops by 1 kPa. This varies by weather.

NEXT

END