Lexus IS250 IS220d GSE20 ALE20 2AD-FHV EMISSION CONTROL

EMISSION CONTROL SYSTEM - ON-VEHICLE INSPECTION

  • HINT:
  • If a malfunction that the EGR system is always operating occurs, black or white smoke may be emitted from the exhaust pipe.
1. INSPECT SEATING OF EGR VALVE

Start the engine, and then check that it starts and runs at idle.

2. INSPECT HOT ENGINE CONDITION

Connect the intelligent tester to the DLC3.

Start the engine, and then run it at idle.

Turn the intelligent tester on.

Select "Powertrain / ENGINE / Active Test Control the EGR Position" in Data List.

Warm up the engine.


The coolant temperature should be between 75°C (167°F) and 90°C (194°F).

Check the EGR position and measure the MAF reading.

  • Standard (EGR position 1 to 100%):
  • Engine ConditionEGR PositionActive TestMAF
    Idling1 to 100%Active test performed (Operate EGR position 100%)2.2 to 4.7 g/s
  • Standard (EGR position 0%):
  • Engine ConditionEGR PositionActive TestMAF
    Idling0%Active test performed (Operate EGR position 0%)6.4 to 8.4 g/s
  • HINT:
If the MAF reading is out of the standard range in either conditions active test performed or active test not performed, replace the EGR valve.
If the MAF reading is out of the standard range in both conditions active test performed and active test not performed, check the intake air flow meter.

If any defects are found, replace the intake air flow meter, and then check the operation of the EGR valve.


3. VISUALLY INSPECT HOSES, CONNECTORS AND GASKETS
Emission Control System - On-Vehicle Inspection. 2AD-FHV EMISSION CONTROL. Lexus IS250 IS220d GSE20 ALE20

Check for cracks, leaks or damage.

Check the engine assembly to see if the portions indicated by the arrows have cracks, leaks or damage.

  • NOTICE:
Detachment or other problems with the engine oil dipstick, filler cap, PCV hose and other components may cause the engine to run improperly.
Air suction caused by disconnections, looseness or cracks in the parts of the air induction system between the throttle body and cylinder head will cause engine failure or engine malfunctions.

If any defects are found, replace the parts as necessary.


LEXUS IS250, IS220d / GSE20 ALE20
2AD-FHV EMISSION CONTROL
Lexus IS250 IS220d GSE20 ALE20
EMISSION CONTROL SYSTEM