Ecd System (W/ Urea Scr System) Lack Of Power (Turbocharger System)


INSPECTION PROCEDURE

CHECK TURBOCHARGER SUB-ASSEMBLY

INSPECT TURBOCHARGER SUB-ASSEMBLY (TURBINE SHAFT)

INSPECT TURBOCHARGER SUB-ASSEMBLY

INSPECT TURBOCHARGER NOZZLE VANE PLATE SUB-ASSEMBLY

CHECK EXHAUST MANIFOLD CONVERTER SUB-ASSEMBLY

REPLACE V CLAMP AND GASKET

PERFORM SIMULATION TEST

ECD SYSTEM (w/ Urea SCR System) - Lack of Power (Turbocharger System)


INSPECTION PROCEDURE

HINT:
  1. The diagnosis flowchart is for lack of power due to turbocharger factors.
  2. If symptom-specific diagnosis indicates a turbocharger related problem, check using this flowchart.
1.CHECK TURBOCHARGER SUB-ASSEMBLY


  1. Check that no soot or oil adheres to the turbocharger sub-assembly connectors.


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gd-Ftv Engine Control.Ecd System.Ecd System (W/ Urea Scr System) Lack Of Power (Turbocharger System)

    HINT:
    If adhering soot or an oil leak exists, air leaking at that position may be the cause of the lack of boost pressure.

Result:
Result
Proceed to
No adhering soot or an oil
A
Soot adhering around the turbine housing, flange, or V band (A in the illustration)
B
Oil leak from the contact surface between the compressor housing and bearing housing (B in the illustration)
C


B
Go to step 5

C
REPLACE TURBOCHARGER SUB-ASSEMBLY (LandCruiser RM000002S6F011X.html)
A


2.INSPECT TURBOCHARGER SUB-ASSEMBLY (TURBINE SHAFT)

  1. Remove the turbocharger sub-assembly.

    1. Check that the turbine shaft rotates smoothly, without catching.
    2. Check for loose turbine mounting nuts and for axial play in the turbine shaft.
      HINT:
      If the turbine shaft catches or if there is no play or excessive play, it could indicate improper sealing due to seizing or poor sliding because of a deposit build-up.
      Standard value:
      0.10 mm (0.00394 in.) or less

Result:
Result
Proceed to
No turbine shaft malfunction
A
Turbine shaft malfunction
B


B
REPLACE TURBOCHARGER SUB-ASSEMBLY (LandCruiser RM000002S6F011X.html)
A


3.INSPECT TURBOCHARGER SUB-ASSEMBLY

  1. Check for interference between the turbine wheel and the turbine housing.

    HINT:
    When there is interference between the turbine wheel and turbine housing and the turbine wheel is damaged, check for fragments of the turbine wheel in the exhaust manifold converter subassembly.

Result:
Result
Proceed to
No damage or interference
A
Damage or interference exists
B


B
REPLACE TURBOCHARGER SUB-ASSEMBLY (LandCruiser RM000002S6F011X.html)
A


4.INSPECT TURBOCHARGER NOZZLE VANE PLATE SUB-ASSEMBLY


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

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

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

  1. Move the turbocharger vane control rod subassembly and check that the turbocharger nozzle vane plate moves.

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


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

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

5.CHECK EXHAUST MANIFOLD CONVERTER SUB-ASSEMBLY

  1. Check for deformation or cracks in the mounting surfaces on the exhaust manifold converter subassembly and the turbocharger sub-assembly.

    HINT:
    Deformation or cracks on a mounting surface may allow exhaust gas to leak from the damaged position.
    Standard:
    No deformation or cracks on a mounting surface

Result:
Result
Proceed to
No problem with the mounting surface
A
Deformation or cracks on the exhaust manifold converter sub-assembly mounting surface
B
Deformation or cracks on the turbocharger subassembly mounting surface
C


B
REPLACE EXHAUST MANIFOLD CONVERTER SUB-ASSEMBLY (LandCruiser RM000005UKF000X.html)

C
REPLACE TURBOCHARGER SUB-ASSEMBLY (LandCruiser RM000002S6F011X.html)
A


6.REPLACE V CLAMP AND GASKET

  1. Replace the V clamp and the gasket.


NEXT


7.PERFORM SIMULATION TEST

  1. Check that the abnormal state has disappeared.


NEXT

END