Turbocharger - On-Vehicle Inspection

Lexus IS250 IS220d GSE20 ALE20 2AD-FHV INTAKE

TURBOCHARGER - ON-VEHICLE INSPECTION

1. INSPECT EXHAUST SYSTEM

Check for leaks or clogging between the cylinder head and turbocharger inlet, and also between the turbocharger outlet and exhaust pipe.

ConditionOperation
Deformed componentsRepair or replace
Foreign material in passagesRemove
Leakage from componentsRepair or replace
Cracks in componentsCheck and replace
2. CHECK TURBOCHARGING PRESSURE
Turbocharger - On-Vehicle Inspection. 2AD-FHV INTAKE. Lexus IS250 IS220d GSE20 ALE20

Warm up the engine.

Using a 3-way connector, connect SST (turbocharger pressure gauge) to the hose leading to the intake air connector.

  • SST
  • 09992-00242

While depressing the clutch pedal, fully depress the accelerator pedal down. Measure the turbocharging pressure at maximum speed (5,100 to 5,250 rpm).

  • Standard pressure:
  • 48 to 53 kPa (0.49 to 0.54 kgf/cm2, 6.9 to 7.7 psi)

If the pressure is less than the specified range, check both the intake and exhaust systems for leakage. If there is no leaks, check if the actuator hose is properly connected. If there is no problem with the hose, check the turbocharger. If the pressure is greater than the specified range, check if the actuator hose is properly connected, or is cracked. If there is no problem with the hose, check the turbocharger.


LEXUS IS250, IS220d / GSE20 ALE20