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Home >> Toyota >> 1996 >> Avalon XLS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Fuel System >> Fuel Control >> Fuel Cut System

Fuel Cut System

  1. When testing fuel cut system, monitor engine RPM using scan tester. Connect scan tester to data link connector No. 3 for monitoring engine RPM. For connecting of scan tester, see appropriate application under IDLE SPEED & MIXTURE in ADJUSTMENTS article.
  2. Start and warm engine to normal operating temperature. Ensure A/C and all accessories are off. Gradually increase engine RPM to at least 3500 RPM.
  3. Using stethoscope, check for fuel injector operating sound. Ensure when throttle lever is released, fuel injector stops operating momentarily and then resumes operating (fuel return RPM).
  4. Ensure fuel return RPM is within specification. See FUEL CUT SYSTEM SPECIFICATIONS  table. Shut engine off. Remove test equipment.
FUEL CUT SYSTEM SPECIFICATIONS (1)

Application Fuel Return RPM
Avalon 1200
(1) Check with engine at normal operating temperature and with the A/C and all accessories off.
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