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


DESCRIPTION

INSPECTION PROCEDURE

CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P2006)

CHECK INTAKE SYSTEM

REPAIR OR REPLACE INTAKE SYSTEM

CHECK INTAKE MANIFOLD (SWIRL CONTROL VALVE OPERATION)

READ VALUE USING GTS (MAF AND MAP)

REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

CHECK CONNECTION OF VACUUM HOSE

PERFORM ACTIVE TEST USING GTS (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)

REPLACE INTAKE MANIFOLD

INSPECT TURBOCHARGER NOZZLE VANE PLATE SUB-ASSEMBLY

REPAIR OR REPLACE VACUUM HOSE

REPLACE VACUUM CONTROL VALVE SET

PERFORM ACTIVE TEST USING GTS (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 assembly (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 assembly (for swirl control valve)
  2. Open or short in vacuum switching valve assembly (for swirl control valve) circuit
  3. Intake manifold (swirl control valve)
  4. Electric EGR control valve assembly
  5. Turbocharger nozzle vane plate sub-assembly
  6. Mass air flow meter sub-assembly
  7. Air cleaner hose
  8. Vacuum hose
  9. Air cleaner filter element subassembly 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 gm/sec or more and MAP is 105 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, Gdj150,155.1Gd-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 Assembly
*5
Swirl Control Valve Actuator
-
-

INSPECTION PROCEDURE

NOTICE:
  1. After replacing the ECM, the new ECM needs registration (LandCruiser RM0000012XK0AVX.html) and initialization (LandCruiser RM000000TIN08IX.html).
  2. After replacing an injector assembly, the ECM needs registration (LandCruiser RM0000012XK0AVX.html).
HINT:
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.
1.CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P2006)

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG) and turn the GTS on.

  1. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

  1. Read the DTCs.

    Result
    Result
    		Proceed to
    DTC P2006 is output
    		A
    DTC P2006 and other DTCs are output
    		B
    HINT:
    When manifold absolute pressure sensor, mass air flow sub-assembly, intake air temperature sensor, and/or intake air temperature sensor (Turbo) related DTCs are stored along with P2006, perform troubleshooting for those DTCs first.
    Manifold absolute pressure sensor-related DTCs: P0107 and P0108 (LandCruiser RM00000187U0CGX.html).
    Mass air flow sub-assembly-related DTCs: P0100 (LandCruiser RM00000187J09IX.html).
    Intake air temperature sensor-related DTCs: P0112 and P0113 (LandCruiser RM00000187L09FX.html).
    intake air temperature sensor (Turbo)-related DTCs: P007C and P007D (LandCruiser RM0000018810A5X.html).


B
GO TO RELEVANT DTC CHART (LandCruiser RM0000031HW07PX.html)
A


2.CHECK INTAKE SYSTEM

  1. Check for air leakage and blockage between the air cleaner cap and turbocharger sub-assembly, and between the turbocharger sub-assembly 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 intake system, especially hoses and pipes between the air cleaner filter element sub-assembly and turbocharger sub-assembly.
    2. Check if the air cleaner filter element sub-assembly 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 INTAKE SYSTEM

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


NEXT


4.CHECK INTAKE MANIFOLD (SWIRL CONTROL VALVE OPERATION)

  1. Connect the GTS to the DLC3.

  1. Turn the GTS on.

  1. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

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



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. Perform the Active Test.

    OK:
    Swirl control valve rod moves smoothly in the direction indicated by the arrow in the illustration.


NG
Go to step 7
OK


5.READ VALUE USING GTS (MAF AND MAP)

  1. Connect the GTS to the DLC3.

  1. Turn the GTS on.

  1. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°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 gm/sec or more and MAP 105 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 13

C
END
A


6.REPLACE MASS AIR FLOW METER SUB-ASSEMBLY

  1. Replace the mass air flow meter sub-assembly (LandCruiser RM000000VHD05PX.html).

    HINT:
    If foreign matter is stuck inside the mass air flow meter sub-assembly, the output characteristics of the mass air flow meter sub-assembly may change, resulting in a malfunction.


NEXT
Go to step 18

7.CHECK CONNECTION OF VACUUM HOSE

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



NG
Go to step 14
OK


8.PERFORM ACTIVE TEST USING GTS (ACTIVATE THE VSV FOR SWIRL CONTROL VALVE)
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gd-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 GTS to the DLC3.

  1. Turn the engine switch on (IG) and turn the GTS on.

  1. Start the engine.

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

  1. Check the vacuum switching valve (for swirl control valve) operation when it is operated using the GTS.

    OK:
    GTS 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


9.INSPECT ELECTRIC EGR CONTROL VALVE ASSEMBLY

  1. Inspect the electric EGR control valve assembly (LandCruiser RM000005UJP000X.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 11

NG
Go to step 10

10.REPLACE ELECTRIC EGR CONTROL VALVE ASSEMBLY

  1. Replace the electric EGR control valve assembly (LandCruiser RM000005UJR000X.html).


NEXT


11.INSPECT INTAKE MANIFOLD (SWIRL CONTROL VALVE OPERATION)

  1. Inspect the intake manifold (swirl control valve) (LandCruiser RM000001A3W03SX.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 12

12.REPLACE INTAKE MANIFOLD

  1. Replace the intake manifold (swirl control valve).



NEXT
Go to step 18

13.INSPECT TURBOCHARGER NOZZLE VANE PLATE SUB-ASSEMBLY

  1. Remove the turbocharger sub-assembly (LandCruiser RM000002S6F011X.html).

  1. Inspect the turbocharger nozzle vane plate sub-assembly.

    1. Remove the e-washer from the turbocharger nozzle vane control actuator.



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. Move the turbocharger vane control rod sub-assembly and check that the turbocharger nozzle vane plate moves.

Result:
Result
Proceed to
Catches, but operates*
OK
Gets stuck and does not operate
NG
HINT:
*: Check several times.


OK
REPLACE TURBOCHARGER NOZZLE VANE CONTROL ACTUATOR (LandCruiser RM000005UI8000X.html)

NG
REPLACE TURBOCHARGER NOZZLE VANE PLATE SUB-ASSEMBLY (LandCruiser RM000005UI8000X.html)

14.REPAIR OR REPLACE VACUUM HOSE

  1. Repair or replace the vacuum hose.



NEXT
Go to step 18

15.REPLACE VACUUM CONTROL VALVE SET

  1. Replace the vacuum control valve set (LandCruiser RM000005UI5000X.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 GTS (ACTIVATE THE VSV FOR SWIRL CONTROL VALVE)
Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gd-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 GTS to the DLC3.

  1. Turn the engine switch on (IG) and turn the GTS on.

  1. Start the engine.

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

  1. Check the vacuum switching valve (for swirl control valve) operation when it is operated using the GTS.

    OK:
    GTS 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


17.REPLACE ECM

  1. Replace the ECM (LandCruiser RM0000013Z002DX.html).


NEXT


18.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED

  1. Connect the GTS to the DLC3.

  1. Start the engine and turn the GTS on.

  1. Warm up the engine (engine coolant temperature is 75°C (167°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 gm/sec or more and MAP is 105 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